Energy Conservation (Energy Management Practices) Regulations 2013

No. S 246

Energy Conservation Act 2012

(ACT 11 OF 2012)

Energy Conservation
(Energy Management Practices)
Regulations 2013

In exercise of the powers conferred by sections 2, 3(3), 23(1) and (2), 24(3), 25(1), 27(1) and (2), 28(1) and (2), 29(1) and (2), 30(1), (2) and (4) and 78 of the Energy Conservation Act 2012, the Minister for the Environment and Water Resources hereby makes the following Regulations:

PART 1

PRELIMINARY

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Citation and commencement

1.  These Regulations may be cited as the Energy Conservation (Energy Management Practices) Regulations 2013 and shall come into operation on 22nd April 2013.

Definitions

2.  In these Regulations, unless the context otherwise requires —

“chief executive” means any person, by whatever name described, who is in the direct employment of, or acting for or by arrangement with, a corporation, and is principally responsible for the management and conduct of the business of the corporation;

“energy” has the same meaning as in the Energy Conservation (Registrable Corporations) Order 2013 (G.N. No. S 248/2013);

“energy commodity” has the same meaning as in the Energy Conservation (Registrable Corporations) Order 2013;

“energy consumption” has the same meaning as “consumption of energy” in the Energy Conservation (Registrable Corporations) Order 2013;

“energy-consuming system” means any piece of equipment or pieces of equipment working together to perform a task or support one or more processes which consume fuel or energy commodities, including but not limited to any of the following:

(a) fuel combustion system;

(b) heating, ventilation and air-conditioning system (including air handling system);

(c) cooling system;

(d) system used to produce or generate energy commodity or commodities;

(e) system used for bonding, separation, conversion, treatment, testing or processing;

(f) system used for pumping, movement, transportation, mixing or recovery;

“feedstock” refers to any fuel or energy commodity that is used as raw material to produce products containing carbon;

“greenhouse gas” refers to any of the gases as specified in the First Schedule;

“manufacturing and manufacturing-related services” has the meaning given by paragraph 2 of the Energy Conservation (Registrable Corporations) Order 2013 (G.N. No. S 248/2013);

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“registrable corporation” has the same meaning as in the Energy Conservation (Registrable Corporations) Order 2013;

“relevant business activity” means a business activity under the operational control of the registered corporation that —

(a) resulted in the corporation’s registration; or

(b) would have qualified the corporation as a registrable corporation if it was not already so registered;

“specific energy consumption” means a measure of the energy consumption of the business activity or energy-consuming system, as the case may be, that is expressed —

(a) by reference to a unit of production or service that is reasonably relevant to the business activity or energy-consuming system, its energy use, or both; and

(b) providing a metric (number) and a measure (production unit or unit relevant to the service);

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“supply of electricity, gas, steam, compressed air and chilled water for air-conditioning” has the meaning given by paragraph 2 of the Energy Conservation (Registrable Corporations) Order 2013;

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“water supply and sewage and waste management” has the meaning given by paragraph 2 of the Energy Conservation (Registrable Corporations) Order 2013.

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Circumstances in which activity or activities (including ancillary activities) will form part of single undertaking or enterprise

3.—(1)  For the purposes of section 3(1)(b) of the Act, this regulation specifies the circumstances in which an activity, or a series of activities, will form part of a single undertaking or enterprise.

(2)  Activities that together produce one or more products or services (referred to in this regulation as the primary production process) will form part of a single undertaking or enterprise if the activities take place at a single site.

(3)  If there is another activity or series of activities (referred to in this regulation as the other production process) that —

(a) is under the overall control of the corporation that has overall control of the primary production process; and

(b) produces one or more other products or services for the primary production process (which are not used solely in the primary production process),

then provided that other production process takes place at the same site as the primary production process, all of the activities in the primary production process and the other production process will form part of a single undertaking or enterprise.

Activities to be attributable to same industry sector as principal activity

4.—(1)  For the purposes of section 3(2) of the Act, this regulation specifies what activities that form part of a single undertaking or enterprise must be attributed to a particular industry sector.

(2)  If activities will form part of a single undertaking or enterprise under regulation 3, then unless paragraph (3) applies, all of the activities are attributable to the particular industry sector that the principal activity for the undertaking or enterprise is attributable to.

(3)  In this regulation, “principal activity”, in relation to a single undertaking or enterprise, means the activity that —

(a) results in the production of a product or service that is produced for sale on the market; and

(b) produces the most value for the single undertaking or enterprise out of any of the activities forming part of the single undertaking or enterprise.

PART 2

REGISTRATION OF REGISTRABLE CORPORATION

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Registration of registrable corporation

5.—(1)  An application to be registered as a registered corporation shall be made —

(a) using the relevant form provided in the electronic service provided at http://www.nea.gov.sg; and

(b) in the manner specified by the Director-General.

(2)  Every application referred to in paragraph (1) shall be accompanied by the following information and documents:

(a) registered name of the corporation;

(b) Singapore unique entity number of the corporation;

(c) principal place of business;

(d) name of the chief executive, and his designation, contact details and identification number;

(e) name of corporation representative, and his designation, contact details and identification number;

(f) name of energy manager(s) (if any), and his designation, contact details and identification number;

(g) address of site of each business activity that qualifies the corporation as a registrable corporation, and that site’s electricity and gas account number (if any);

(h) energy bills and other records (if any) of energy consumption, showing that the energy use of the business activity has attained the energy use threshold in at least 2 out of the 3 preceding calendar years;

(i) the business profile of the corporation (if any);

(j) signed statement from the chief executive, that the information submitted is accurate and complete; and

(k) such other information or document as may be specified in the form provided or as may be required by the Director-General.

Circumstances in which registered corporation may apply to cancel registration

6.—(1)  For the purposes of section 25(1)(c) of the Act, this regulation specifies the circumstances in which a registered corporation may apply to the Director-General to cancel its registration.

(2)  A registered corporation may apply to cancel its registration if it has ceased its business activity and has no intention of resuming its business activity within the next 3 years.

Application to cancel registration

7.—(1)  For the purposes of section 25(1) of the Act and regulation 6, an application for cancellation of registration as a registered corporation shall be made —

(a) using the relevant form provided in the electronic service provided at http://www.nea.gov.sg; and

(b) in the manner specified by the Director-General.

(2)  Every application referred to in paragraph (1) shall be accompanied by the following information and documents:

(a) registered name of the corporation;

(b) Singapore unique entity number of the corporation (if any);

(c) address of site of each relevant business activity;

(d) grounds for cancelling the registration;

(e) details of contact person (name, designation and contact details);

(f) energy bills and other records (if any) showing the relevant energy consumption data, if the ground for cancelling the registration is the ground referred to in section 25(1)(b) of the Act;

(g) notice of cessation of business activity submitted by the chief executive, if the ground for cancelling the registration is the ground referred to in regulation 6(2);

(h) signed statement from the chief executive, that the information submitted is accurate and complete; and

(i) such other information or documents as the Director-General may require.

PART 2AA

REGISTRATION OF REGISTRABLE RELEVANT PERSON

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Definitions of this Part

7AA.  In this Part —

“CSC”, for a new building, means a certificate of statutory completion issued by the Commissioner of Building Control under the Building Control Act 1989 for the new building and, where more than one CSC is issued for the new building, the first CSC so issued;

“new building” and “prescribed system” have the meanings given by regulation 7F;

“TOP”, for a new building, means a temporary occupation permit issued by the Commissioner of Building Control under the Building Control Act 1989 for the new building and, where more than one TOP is issued for the new building, the first TOP so issued.

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Registration of registrable relevant person

7AB.—(1)  For the purposes of section 23A(1) of the Act, an application by a registrable relevant person to be registered as a registered relevant person must be made —

(a) using the relevant form provided in the electronic service provided at https://www.nea.gov.sg; and

(b) in the manner specified by the Director-General.

(2)  An application mentioned in paragraph (1) must be accompanied by the following information and documents:

(a) registered name of the registrable relevant person;

(b) Singapore unique entity number of the registrable relevant person (if any);

(c) principal place of business of the registrable relevant person;

(d) name of the chief executive of the registrable relevant person and his or her designation, contact details and identification number;

(e) name of at least one representative of the registrable relevant person and his or her designation, contact details and identification number;

(f) address of site of each business activity or premises under the operational control of the registrable relevant person, which is served by a prescribed system (or any part of the system);

(g) the business profile of the registrable relevant person (if any);

(h) for any premises which is a new building under the operational control of the registrable relevant person and is served by a prescribed system (or any part of the system) —

(i) the TOP or CSC (whichever is issued earlier) for the premises; and

(ii) the date on which the TOP or CSC was issued (whichever is issued earlier);

(i) signed statement from the chief executive of the registrable relevant person stating that the information submitted is accurate and complete;

(j) any other information or document that may be specified in the form provided or that the Director-General may require.

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Period of application for registration for registrable relevant person

7AC.  A registrable relevant person (X) who has operational control over any premises mentioned in regulation 7G(a) or any business activity mentioned in regulation 7G(b), which is served by a prescribed system (or any part of the system), must apply to the Director-General to be registered as a registered relevant person in accordance with the Fourth Schedule.

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Prescribed circumstances for purposes of section 25(1A)( c ) of Act

7AD.  For the purposes of section 25(1A)(c) of the Act, the prescribed circumstances, in relation to a registered relevant person, are that the registered relevant person —

(a) has ceased or will cease to have operational control over the registered relevant person’s business activity or premises; and

(b) has no intention of resuming operational control over the registered relevant person’s business activity or premises for the next 3 years.

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Application to cancel registration

7AE.—(1)  For the purposes of section 25(1A) of the Act, an application by a registered relevant person to cancel the registered relevant person’s registration must be made —

(a) using the relevant form provided in the electronic service provided at https://www.nea.gov.sg; and

(b) in the manner specified by the Director-General.

(2)  An application mentioned in paragraph (1) must be accompanied by the following information and documents:

(a) registered name of the registered relevant person;

(b) Singapore unique entity number of the registered relevant person (if any);

(c) address of site of each business activity or premises under the operational control of the registered relevant person, which is served by a prescribed system (or any part of the system);

(d) grounds for cancelling the registration;

(e) details of a contact person (name, designation and contact details);

(f) records to show that the prescribed system (or any part of the system) serving the business activity or premises under the operational control of the registered relevant person is or is to be decommissioned, if the ground for cancelling the registration is the ground mentioned in section 25(1A)(b) of the Act;

(g) notice of cessation of business activity signed by the chief executive of the registered relevant person, if the ground for cancelling the registration is the ground mentioned in regulation 7AD;

(h) signed statement from the chief executive of the registered relevant person stating that the information submitted under this paragraph is accurate and complete;

(i) any other information or document that the Director-General may require.

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PART 2A

ENERGY MANAGEMENT PRACTICES FOR NEW VENTURES

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Definitions of this Part

7A.  In this Part, unless the context otherwise requires —

“best available technology” means technology that results in the best energy efficiency, use and consumption;

“energy” has the same meaning as in paragraph 2 of the Energy Conservation (Registrable Corporations) Order 2013 (G.N. No. S 248/2013);

“energy and material flows” means a method of computing —

(a) the energy and materials provided for and released from the processes and energy‑consuming systems in a business activity; and

(b) the energy conversions and energy use within the processes and energy‑consuming systems in the business activity;

“energy commodity” has the same meaning as in paragraph 2 of the Energy Conservation (Registrable Corporations) Order 2013;

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“post‑assessment design” means a design of a new venture facility that includes any energy efficiency opportunity identified in an energy efficiency opportunities assessment conducted in respect of the new venture.

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Application of this Part

7B.—(1)  This Part applies to a new venture of any person (whether or not a registered corporation) that is a business activity where —

(a) the estimated total energy to be consumed by the business activity equals or exceeds the threshold of 54 terajoules per calendar year, derived from one or more types of fuel or energy commodity specified in the First Schedule to the Energy Conservation (Registrable Corporations) Order 2013; and

(b) the business activity is carried out at a single site and is attributable to one of the following industry sectors:

(i) manufacturing and manufacturing‑related services;

(ii) supply of electricity, gas, steam, compressed air and chilled water for air‑conditioning;

(iii) water supply and sewage and waste management.

(2)  For the purposes of paragraph (1)(a), the estimated total energy to be consumed by the business activity —

(a) must be calculated on the basis that the business activity is carried out at full capacity for 24 hours every day throughout the calendar year; and

(b) must be derived from all fuel and energy commodities estimated to be used to provide or produce the energy to be consumed by the business activity, but excludes energy estimated to be produced from any fuel or energy commodity that is already accounted for in the estimated total figure.

(3)  If an estimated quantity of fuel to be used is to be converted to an amount of energy in joules, the conversion is to be done using —

(a) the default net calorific values set out in the Second Schedule to the Energy Conservation (Registrable Corporations) Order 2013; or

(b) the net calorific values specified by the person mentioned in paragraph (1) and approved by the Director‑General under paragraph (7).

(4)  If an estimated quantity of an energy commodity to be used is to be converted to an amount of energy in joules, the conversion is to be done using —

(a) the default energy content values set out in the Third Schedule to the Energy Conservation (Registrable Corporations) Order 2013; or

(b) the energy content values specified by the person mentioned in paragraph (1) and approved by the Director‑General under paragraph (7).

(5)  A person mentioned in paragraph (1) seeking to specify the net calorific value of a fuel must submit to the Director‑General a report by a laboratory containing the results of a test conducted in accordance with the relevant ASTM International, International Organization for Standardization (ISO) or other testing standards approved by the Director‑General to ascertain the net calorific value of the fuel concerned.

(6)  A person mentioned in paragraph (1) seeking to specify the energy content value of an energy commodity must submit to the Director‑General the method by which the person derived the energy content value.

(7)  The Director‑General may approve or reject the net calorific value or the energy content value sought to be specified by a person under paragraph (5) or (6), as the case may be.

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Energy efficiency opportunities assessment for new ventures

7C.—(1)  A person required to conduct an energy efficiency opportunities assessment for a business activity of a new venture under this Part must determine the following:

(a) the methods and processes of the business activity to be assessed;

(b) the energy‑consuming systems of the business activity to be assessed;

(c) the objective of the assessment;

(d) the time period for the assessment;

(e) the methods and processes to be used to conduct the assessment;

(f) the individuals conducting the assessment, including each individual’s role and experience.

(2)  For the purpose of paragraph (1)(c), the objective of the energy efficiency opportunities assessment must include —

(a) identifying the energy efficiency opportunities that are available in respect of the business activity, including taking into account any dependencies in respect of the processes and energy‑consuming systems of the business activity, after reviewing —

(i) the optimum methods or processes of the business activity;

(ii) the proposed energy‑consuming systems estimated to consume a total of at least 80% of the estimated annual energy consumption of the business activity, including the proposed location, arrangement and best operating practices of these energy‑consuming systems; and

(iii) available alternative technology choices (including best available technology) for the business activity, and the proposed energy‑consuming systems mentioned in sub‑paragraph (ii);

(b) assessing the technical and economic feasibility of implementing each such energy efficiency opportunity based on a comparison, between a case if the energy efficiency opportunity is implemented and a case if the efficiency opportunity is not implemented, of all the following:

(i) the estimated investment and operation cost;

(ii) the estimated annual energy savings;

(iii) the estimated specific energy consumption;

(iv) the estimated annual greenhouse gas emissions;

(v) the estimated financial savings;

(vi) the estimated returns on investment;

(vii) other criteria, including non‑energy related benefits such as greater productivity or improved reliability, as may be appropriate; and

(c) determining which such energy efficiency opportunities are to be included in the post‑assessment design of the new venture facility.

(3)  If any proposed energy‑consuming system mentioned in paragraph (2)(a)(ii) is replaced with another proposed energy‑consuming system during or after the energy efficiency opportunities assessment, a further energy efficiency opportunities assessment must be conducted in respect of the replacement energy‑consuming system —

(a) if the replacement energy‑consuming system forms part of the proposed energy‑consuming systems estimated to consume a total of at least 80% of the estimated annual energy consumption of the business activity; and

(b) in accordance with this regulation.

(4)  The energy efficiency opportunities assessment must be conducted —

(a) on the basis that the business activity is carried out at full capacity for 24 hours every day throughout the calendar year; and

(b) on the basis of sound and reliable information or documents, including information or documents from the supplier of the energy‑consuming systems mentioned in paragraph (2)(a)(ii) and replacement energy‑consuming system mentioned in paragraph (3), if any.

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Energy efficiency opportunities assessment report for new ventures

7D.—(1)  The report on the energy efficiency opportunities assessment conducted under regulation 7C must include the following:

(a) an executive summary that summarises the important findings of the energy efficiency opportunities assessment;

(b) general information of the business activity assessed, including —

(i) the type of business activity;

(ii) the intended outputs of the business activity; and

(iii) the estimated full capacity of the business activity and intended outputs of the business activity;

(c) the matters mentioned in regulation 7C(1) (read with regulation 7C(2)), (3) and (4);

(d) information about the post‑assessment design of the new venture facility within which the business activity assessed is to be conducted, comprising —

(i) the proposed layout of the new venture facility;

(ii) the proposed process flow diagram and energy and material flows in respect of the business activity;

(iii) a description, and the proposed location and arrangement, of every proposed energy‑consuming system estimated to consume a total of at least 80% of the estimated annual energy consumption of the business activity;

(iv) the estimated annual quantity and unit of measure, of each type of fuel or energy commodity to be used by the business activity, including each energy‑consuming system mentioned in sub‑paragraph (iii);

(v) the net calorific value of each type of fuel and energy content value of each type of energy commodity to be used by the business activity;

(vi) the estimated annual quantity and unit of measure of each intended output of the business activity, including from each energy‑consuming system mentioned in sub‑paragraph (iii);

(vii) the estimated specific energy consumption of the business activity, including by each energy‑consuming system mentioned in sub‑paragraph (iii); and

(viii) the estimated annual greenhouse gas emissions of the business activity, including from each energy‑consuming system mentioned in sub‑paragraph (iii);

(e) the reasons for including or excluding the energy efficiency opportunities mentioned in regulation 7C(2)(a) in the post-assessment design of the new venture facility;

(f) if any energy efficiency opportunity mentioned in regulation 7C(2)(a) is excluded in the post‑assessment design of the new venture facility —

(i) the processes and energy‑consuming systems of the business activity in respect of the energy efficiency opportunity so excluded; and

(ii) a comparison of the information mentioned in paragraph (1)(d)(iv) to (viii) between the processes and energy‑consuming systems mentioned in sub‑paragraph (i) so excluded with the processes and energy‑consuming systems included in the post‑assessment design;

(g) if any energy efficiency opportunity mentioned in regulation 7C(2)(a) is included in the post‑assessment design of the new venture facility —

(i) the processes and energy‑consuming systems of the business activity in respect of the energy efficiency opportunity so included; and

(ii) a comparison of the information mentioned in paragraph (1)(d)(iv) to (viii) between the processes and energy‑consuming systems mentioned in sub‑paragraph (i) so included with any processes and energy‑consuming systems reviewed but excluded in the post‑assessment design of the new venture facility, if any;

(h) such other information or document as the Director‑General may require.

(2)  The report specified in paragraph (1) —

(a) must be signed by the person principally responsible for conducting the energy efficiency opportunities assessment;

(b) must be endorsed by the chief executive of the person mentioned in regulation 7B(1);

(c) must be made —

(i) using the relevant form provided in the electronic service provided at http://www.nea.gov.sg; and

(ii) in the manner specified by the Director‑General; and

(d) may be submitted by an employee of, and authorised by, the person mentioned in regulation 7B(1).

(3)  Every application under section 31B(2) of the Act for a waiver of the application of section 26A(1) or (2) of the Act must —

(a) be in writing;

(b) state the reasons for the person’s inability to comply with the requirements; and

(c) be accompanied by supporting documents.

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Records to be kept for new ventures

7E.—(1)  A person mentioned in regulation 7B(1) must keep and maintain complete and accurate records of the information and documents in respect of the following for at least 5 years after the date of the certificate of statutory completion issued in respect of the new venture facility:

(a) the matters mentioned in regulation 7C(1);

(b) the energy efficiency opportunities identified in regulation 7C(2)(a);

(c) the assessment of the technical and economic feasibility of implementing each energy efficiency opportunity mentioned in regulation 7C(2)(b);

(d) the determination of the energy efficiency opportunities to be included in the post‑assessment design of the new venture facility;

(e) any other matters relied on by the person in preparing the report submitted under regulation 7D.

(2)  In this regulation, “certificate of statutory completion” has the same meaning as in section 2(1) of the Building Control Act 1989.

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PART 2B

MINIMUM ENERGY EFFICIENCY STANDARDS FOR ENERGY-CONSUMING SYSTEMS

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Definitions of this Part

7F.  In this Part, unless the context otherwise requires —

“antifreeze” means any additive that prevents water from freezing by depressing the freezing point of water;

“assessment report” means a report mentioned in section 26B(2)(b)(i) or (3)(b) of the Act;

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“booster pump” means a pump that is installed on a chilled water pipeline to overcome a drop in pressure in the chilled water pipeline, to prevent over-pressurising chilled water in any parallel pipeline;

“building” has the meaning given by section 2 of the Planning Act 1998;

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“certificate of statutory completion” has the meaning given by section 2(1) of the Building Control Act 1989;

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“cooling tower” means any device in which atmospheric air is passed through sprayed water to lower the temperature of the sprayed water by evaporative cooling;

“development” has the meaning given by section 3 of the Planning Act 1998;

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“end-to-end uncertainty”, in relation to a parameter of a prescribed system, means the combined uncertainty of —

(a) every prescribed measuring instrument installed for the prescribed system for measuring that parameter; and

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(b) any accessory needed for the operation of those prescribed measuring instruments, including a current or voltage transformer;

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“energy management system”, in relation to a prescribed system, means a system that processes, analyses, displays and stores data collected from prescribed measuring instruments installed for the prescribed system;

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“energy performance”, in relation to a prescribed system, means —

(a) the ratio of electrical power consumption (measured in kilowatts) to the refrigeration output (measured in kilowatts) of the prescribed system; or

(b) the ratio of electrical energy consumption (measured in kilowatt-hours) to the refrigeration energy output (measured in kilowatt-hours) of the prescribed system;

“gross floor area” has the same meaning as “floor area” in rule 2 of the Planning (Development) Rules 2008 (G.N. No. S 113/2008);

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“kW_c”, in relation to a prescribed system, means the refrigeration output of the prescribed system, expressed in kilowatts;

“monitoring report” means a report mentioned in section 26B(2)(b)(ii) of the Act;

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“new building” means a building or part of a building —

(a) that is developed (other than by way of retrofitting) in either of the following circumstances:

(i) where an application for planning permission for the development was or is submitted on or after 1 December 2020 under the Planning Act 1998;

(ii) where the Minister charged with the responsibility for national development has authorised or authorises, on or after 1 December 2020 under section 21(6) of the Planning Act 1998, the carrying out of the development subject to a condition that plans of the development must be lodged with the competent authority before the development commences; and

(b) which is served by a prescribed system that serves only the building or part of the building;

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“prescribed measuring instrument” means a measuring instrument mentioned in regulation 7J(1);

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“prescribed system” means an energy-consuming system mentioned in regulation 7H;

“qualified person” means —

(a) an individual who is certified by the Institution of Engineers, Singapore as an energy efficiency opportunities assessor with systems-specific experience in chilled water systems; or

(b) a professional engineer registered under the Professional Engineers Act 1991 in the branch of mechanical engineering, electrical engineering or chemical engineering, who has in force a practising certificate issued under that Act;

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“retrofit” has the meaning given by section 2(1) of the Building Control Act 1989;

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“specified AHRI Standard” means the AHRI Standard 551/591-SI-2018 published by the Air-Conditioning, Heating and Refrigeration Institute;

“SS 591/2013” means the Singapore Standard 591:2013 — Code of Practice for long term measurement of central chilled water system energy efficiency, published by the Enterprise Singapore Board;

“temporary occupation permit” has the meaning given by section 2(1) of the Building Control Act 1989;

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“water-cooled chilled water system” means a system comprising one or more of each of the following components:

(a) a water-cooled chiller;

(b) a chilled water pump for a water-cooled chiller;

(c) a condenser water pump;

(d) a cooling tower,

with interconnections and accessories (including thermal storage tanks, if any), operating together to produce chilled water, whether or not each component is situated in the same premises, and excludes any booster pump and other energy-consuming systems that use the chilled water produced, either directly or indirectly;

“water-cooled chiller” means a factory-made and prefabricated assembly (whether or not it is shipped as one package) comprising one or more of each of the following:

(a) a compressor;

(b) a water-cooled condenser;

(c) an evaporator,

with interconnections and accessories, designed to produce chilled water by using a vapour compression refrigeration cycle to remove heat from chilled water in the evaporator and reject the heat to water in the condenser;

“water-cooled condenser” means a refrigeration system component where refrigerant vapour is condensed and the heat rejected to water, resulting in a rise in water temperature.

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Relevant person

7G.  Section 26B(1) of the Act applies to a corporation that has operational control of —

(a) any premises that are located within any land that is zoned as a Business 1 or Business 2 zone in the Master Plan under the Planning Act 1998; or

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(b) a business activity that is attributable to any of the following industry sectors:

(i) manufacturing and manufacturing-related services;

(ii) supply of electricity, gas, steam, compressed air and chilled water for air-conditioning;

(iii) water supply and sewage and waste management.

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Prescribed energy-consuming system

7H.  For the purposes of section 26B(2) of the Act, the prescribed energy-consuming system is a water-cooled chilled water system that —

(a) is electrically driven;

(b) comprises at least one chiller that produces, or the registered relevant person intends to be used to produce, chilled water without requiring the use of antifreeze;

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(c) has a total refrigeration capacity of 1055 kW_c or more when rated —

(i) at standard rating conditions in accordance with the specified AHRI Standard; or

(ii) in accordance with the operational conditions required for the business activity; and

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(d) generates, or the registered relevant person intends to be used to generate, chilled water at a temperature of 3°C or higher,

but excludes any chiller or part of a chiller comprised in the water-cooled chilled water system that produces, or that the registered relevant person intends to be used for the production of, chilled water requiring the use of antifreeze, and any chilled water pump for that chiller or part and interconnections to the pump.

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[S 719/2025 wef 01/12/2025]

7I.  [Deleted by S 719/2025 wef 01/12/2025]

Prescribed measuring instruments

7J.—(1)  For the purposes of section 26B(2) of the Act, the following are the prescribed measuring instruments for the purpose of assessing the energy efficiency of a prescribed system:

(a) subject to paragraph (2) —

(i) a permanent temperature sensor to measure the chilled water supply temperature of each water-cooled chiller in the prescribed system; and

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(ii) a permanent temperature sensor to measure the chilled water return temperature of each water-cooled chiller in the prescribed system;

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(b) subject to paragraphs (2) and (4), a permanent temperature sensor to measure the condenser water supply temperature of each water-cooled chiller in the prescribed system;

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(c) subject to paragraphs (2) and (4), a permanent temperature sensor to measure the condenser water return temperature of each water-cooled chiller in the prescribed system;

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(d) subject to paragraph (2), one or more permanent flowmeters by or from which the flowrate of the chilled water in each water-cooled chiller in the prescribed system may be measured or derived;

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(e) subject to paragraphs (2) and (4), one or more permanent flowmeters by or from which the flowrate of the condenser water in each water-cooled chiller in the prescribed system may be measured or derived;

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(f) one or more permanent power meters by which the total electrical energy and electrical power consumption of each of the following groups of equipment may be measured or derived:

(i) the water-cooled chillers;

(ii) the chilled water pumps;

(iii) the condenser water pumps;

(iv) the cooling towers.

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(2)  Where water-cooled chillers share a common chilled water header or a common condenser water header —

(a) a permanent temperature sensor may be installed at the common header for the chilled water or the condenser water, as the case may be —

(i) instead of for each water-cooled chiller; or

(ii) in addition to the permanent temperature sensors for each water-cooled chiller; and

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(b) if permanent temperature sensors are installed at the common headers to measure both the water supply and return temperatures for the chilled water or condenser water, a permanent flowmeter may be installed at any common header for the chilled water or condenser water, as the case may be —

(i) instead of for each water-cooled chiller; or

(ii) in addition to the permanent flowmeters for each water-cooled chiller.

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(3)  In relation to each permanent temperature sensor mentioned in paragraph (1)(a), (b) or (c) —

(a) a test plug or thermowell, with an open tip slightly larger than a diameter of 3.2 mm, must also be installed on the chilled water and condenser pipelines —

(i) before and after each permanent temperature sensor; and

(ii) at easily accessible locations, where possible; and

(b) any thermowell installed must enable the permanent temperature sensor inserted in the thermowell to come into direct contact with the fluid in the pipeline.

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(4)  Paragraph (1)(b), (c) and (e) does not apply if the amount or rate of heat rejection of the prescribed system may be derived from other temperature and flowrate measurements taken in the prescribed system.

(5)  The end-to-end uncertainty for each measurement from a prescribed measuring instrument must not exceed —

(a) for a permanent temperature sensor — ±0.05°C;

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(b) for a permanent flowmeter — ±1%; and

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(c) for a permanent power meter — ±2%.

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(6)  Where a registered relevant person satisfies the Director-General that it is not reasonably practicable to install a permanent flowmeter that complies with paragraph (5)(b), the registered relevant person may install a permanent flowmeter with an uncertainty for each measurement that does not exceed ±2%.

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(7)  The overall end-to-end uncertainty of all the prescribed measuring instruments used in the prescribed system must not exceed ±5%.

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(8)  For the purposes of paragraph (7), the overall end-to-end uncertainty of the prescribed measuring instruments is the number ascertained by calculating the square root of the formula A² + B² + C², where —

(a) A is the percentage end-to-end uncertainty of the difference between the chilled water supply and return temperatures, calculated in accordance with the formula where —

(i) D is the end-to-end uncertainty of the chilled water supply temperature measurement;

(ii) E is the end-to-end uncertainty of the chilled water return temperature measurement; and

(iii) F is the smallest value of all values calculated for the prescribed system of the measured chilled water return temperatures less the measured chilled water supply temperatures for the water-cooled chillers in the prescribed system;

(b) B is the percentage end-to-end uncertainty of the chilled water flowrate measurement; and

(c) C is the percentage end-to-end uncertainty of power consumption measurement.

[S 719/2025 wef 01/12/2025]

(9)  The percentage system heat balance for the prescribed system (calculated in accordance with paragraph B.2.2 of SS 591/2013) must be within ±5% for at least 80% of data points.

[S 972/2020 wef 01/12/2020]

[S 719/2025 wef 01/12/2025]

Prescribed manner of assessment

7K.—(1)  The assessment of the energy efficiency of a prescribed system must be carried out in the following manner:

(a) the assessment must be based on measurements made by the prescribed measuring instruments —

(i) collected at intervals of one minute and recorded in 3 decimal places or more;

(ii) collected from the operation of the prescribed system over a continuous period of not less than 2 weeks (called in these Regulations the assessment period); and

(iii) stored in an energy management system that stores and calculates the information specified in paragraph (3);

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(b) a qualified person must certify that regulation 7J is complied with in relation to every prescribed measuring instrument installed for the prescribed system and that the energy management system mentioned in sub-paragraph (a)(iii) accurately calculates the information specified in paragraph (3);

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(c) the qualified person mentioned in sub-paragraph (b) must separately verify the energy efficiency of the prescribed system calculated by the energy management system, using the measurements mentioned in sub-paragraph (a).

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(2)  For the purpose of the assessment under paragraph (1), any measurements collected under sub-paragraph (a)(ii) of that paragraph for any period for which any part of a water-cooled chiller in the prescribed system is producing chilled water requiring the use of antifreeze, must be disregarded in the assessment of the energy efficiency of a prescribed system under that paragraph.

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(3)  The information mentioned in paragraph (1)(a)(iii) and (b) comprises all of the following:

(a) where any cooling tower of the prescribed system cools water from a source external to the prescribed system and any prescribed measuring instrument measures a parameter partially attributable to that external source — the heat gained by and heat lost from cooling water from that external source;

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(b) the electrical energy and electrical power consumed by all chilled water pumps in the prescribed system in pumping chilled water through all the evaporators in the prescribed system, based on the ratio of its flowrate to the total flowrate through the pumps, if applicable;

(c) the electrical energy and electrical power consumed by all condenser water pumps in the prescribed system in pumping water through all the water-cooled condensers in the prescribed system, based on the ratio of its flowrate to the total flowrate through the pumps, if applicable;

(d) the electrical energy and electrical power consumed by all cooling towers in the prescribed system in rejecting heat from water that passes through all the water-cooled condensers in the prescribed system, based on the ratio of its heat rejected to the total heat rejected by the cooling towers, if applicable;

(e) the operating hours of the prescribed system;

(f) the refrigeration output and refrigeration energy output of the chilled water, the rate and amount of heat removal from the condenser water, and the electrical energy and electrical power consumption of the prescribed system;

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(g) the energy performance of the following groups of equipment in the prescribed system:

(i) the water-cooled chillers;

(ii) the chilled water pumps;

(iii) the condenser water pumps;

(iv) the cooling towers;

(h) the energy performance of the prescribed system;

(i) the heat balance of the prescribed system, calculated in accordance with paragraph B.2.2 of SS 591/2013.

(4)  For the purposes of converting refrigeration output in refrigerant ton to kW_c, the refrigeration output in unit of refrigerant ton must be multiplied by 3.517 kW_c/RT.

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Prescribed manner and period of monitoring

7KA.—(1)  For the purposes of section 26B(2)(a)(ii) of the Act, the monitoring of the energy efficiency of a prescribed system (or any part of the system) serving any business activity or premises under the operational control of a registered relevant person, must be carried out using an energy management system which is capable of —

(a) aggregating the measurements collected by the prescribed measuring instruments, for the purpose of generating a monitoring report in the format provided at https://www.nea.gov.sg; and

(b) displaying all of the information listed in paragraph (2) in real time.

(2)  The information mentioned in paragraph (1)(b) is the following:

(a) the operational status of the individual components of the prescribed system;

(b) the positions, in a visual representation of the prescribed system, of the instruments of the prescribed system;

(c) the temperature setpoints;

(d) the percentage system heat balance, where applicable;

(e) one-minute interval values of the following:

(i) all the following measured parameters of each water-cooled chiller in the prescribed system:

(A) the chilled water supply temperature;

(B) the chilled water return temperature;

(C) the condenser water supply temperature;

(D) the condenser water return temperature;

(E) the flowrate of the chilled water in the water-cooled chiller;

(F) the flowrate of the condensed water in the water-cooled chiller;

(ii) the refrigeration output and refrigeration energy output of the chilled water;

(iii) the rate and amount of heat removal from the condenser water;

(iv) the electrical energy and electrical power consumption of the prescribed system and the following groups of equipment in the prescribed system:

(A) the water-cooled chillers;

(B) the chilled water pumps;

(C) the condenser water pumps;

(D) the cooling towers;

(v) the energy performance of the prescribed system and the groups of equipment in the prescribed system listed in sub-paragraph (iv).

(3)  For the purposes of section 26B(2)(a)(ii) of the Act, the prescribed period for the monitoring of the energy efficiency of a prescribed system is any continuous period of 14 days in every calendar year, beginning with the year (called in this Part year A) in which the assessment report is submitted under regulation 7MA.

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Minimum energy efficiency standard

7L.  For the purposes of section 26B(3) of the Act, the prescribed minimum energy efficiency standard specified in the third column of Part 1 of the Fifth Schedule is the prescribed minimum energy efficiency standard for the prescribed system specified in the second column of Part 1 of the Fifth Schedule, serving the premises or the business activity specified in the first column of Part 1 of the Fifth Schedule, against that minimum energy efficiency standard.

[S 719/2025 wef 01/12/2025]

Requirements for assessment reports

7M.—(1)  [Deleted by S 719/2025 wef 01/12/2025]

(2)  Any assessment report (whether under section 26B(2)(b)(i) or (3)(b) of the Act) on the prescribed system must include the following, where applicable:

(a) details of the components of the prescribed system, including —

(i) the unique identification of each component;

(ii) the type of each component, including whether variable frequency drives are present;

(iii) the installation year of each component;

(iv) the refrigeration capacity of each chiller at standard rating conditions in accordance with the specified AHRI Standard or when rated in accordance with the operational conditions required for the business activity;

[S 719/2025 wef 01/12/2025]

(v) the input power to each chiller where the refrigeration output corresponds to refrigeration capacity of the chiller mentioned in sub-paragraph (iv);

(vi) the chilled water supply temperature setpoint of each chiller;

(vii) the designed difference in chilled water supply temperature and return temperature of each chiller;

(viii) the rated performance of each chiller at standard rating conditions in accordance with the specified AHRI Standard or when rated in accordance with the operational conditions required for the business activity;

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(ix) the rated motor output power for each chilled water pump, condenser water pump and cooling tower fan;

(x) the pump head of each chilled water pump and condenser water pump;

(xi) the flowrate of each chilled water pump, condenser water pump and cooling tower;

(xii) the rated pump efficiency for each chilled water pump and condenser water pump;

(xiii) the rated fan efficiency for each cooling tower fan;

(xiv) the rated motor efficiency for each chilled water pump, condenser water pump and cooling tower fan;

(xv) an indication if the power consumption of each chilled water pump, condenser water pump and cooling tower fan is attributable only to the prescribed system; and

(xvi) the schematic of the prescribed system, including all components of the system;

(b) details of the prescribed measuring instruments installed, including —

(i) the unique identification of each instrument;

(ii) the type of each instrument;

(iii) the parameter measured by each instrument;

(iv) the location of each instrument;

(v) the instrument range of each instrument;

(vi) the frequency of measurement taken by each instrument;

(vii) the end-to-end uncertainty of each measurement;

(viii) the last calibration date of each instrument; and

(ix) the location of each instrument superimposed on the schematic of the prescribed system;

[S 719/2025 wef 01/12/2025]

(c) the assessment period;

(d) the information, documents or analyses relied upon by the qualified person in certifying the matters mentioned in regulation 7K(1)(b) and in conducting the verification in regulation 7K(1)(c);

(e) the reasons given to the Director-General under section 31B of the Act or regulation 7J(6) for any waiver or modification of a requirement under section 26B of the Act or in this Part, if any;

(f) the reasons for failing to comply with any requirement under section 26B of the Act or in this Part, if any;

(g) such other information or document as the Director-General may require.

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(3)  The report specified in paragraph (2) must be —

(a) endorsed by the qualified person mentioned in regulation 7K(1)(b);

(b) endorsed by the chief executive of the registered relevant person;

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(c) submitted in the manner specified by the Director-General; and

(d) endorsed and submitted by an employee of the registered relevant person who is authorised by the registered relevant person for this purpose.

[S 972/2020 wef 01/12/2020]

[S 719/2025 wef 01/12/2025]

Prescribed period for submission of assessment reports

7MA.  Where X in regulation 7AC is a registered relevant person, X must, in relation to each prescribed system (or any part of the system) serving the premises mentioned in regulation 7G(a) or business activity mentioned in regulation 7G(b) under the operational control of X, complete an assessment mentioned in section 26B(2)(a)(i) of the Act and submit an assessment report mentioned in section 26B(2)(b)(i) of the Act in accordance with the Fourth Schedule.

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Requirements for monitoring reports

7MB.—(1)  A monitoring report must be in the reporting format mentioned in regulation 7KA(1)(a).

(2)  The monitoring report must include the following measurements:

(a) the total electrical energy consumed by the prescribed system;

(b) the total system refrigeration energy output;

(c) the total system heat rejection;

(d) the average chilled water supply temperature;

(e) the refrigeration energy output of the chilled water at each chilled water supply temperature;

(f) the average energy performance of the following groups of equipment in the prescribed system:

(i) the water-cooled chillers;

(ii) the chilled water pumps;

(iii) the condenser water pumps;

(iv) the cooling towers;

(g) the average energy performance of the prescribed system;

(h) the operating hours of the prescribed system;

(i) the heat balance of the prescribed system, calculated in accordance with paragraph B.2.2 of SS 591/2013;

(j) any other information or document that the Director-General may require.

(3)  The monitoring report mentioned in paragraph (1) must be —

(a) endorsed by the chief executive of the registered relevant person;

(b) submitted in the manner specified by the Director-General; and

(c) endorsed and submitted by an employee of the registered relevant person who is authorised by the registered relevant person for this purpose.

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Prescribed period for submission of monitoring reports

7MC.—(1)  A registered relevant person must submit a monitoring report in respect of a prescribed system —

(a) if the prescribed system is in a new building (or any part of the building) under the operational control of the registered relevant person, and —

(i) the assessment report for the prescribed system mentioned in regulation 7M is submitted to the Director-General on or before 30 June of year A (mentioned in regulation 7KA(3)) — by 30 June of year A + 1; and

(ii) the assessment report for the prescribed system mentioned in regulation 7M is submitted after 30 June of year A — by 30 June of year A + 2; or

(b) if the prescribed system is in any premises (or any part of the premises) under the operational control of the registered relevant person, that do not comprise a new building — by 30 June of year A + 1.

(2)  A registered relevant person must also submit a monitoring report by 30 June of each year subsequent to year A in paragraph (1), in relation to monitoring carried out for a continuous 14-day period in the year immediately before the year in which the report is required to be submitted under this paragraph.

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Requirements relating to keeping of records

7N.—(1)  Records containing the following information must be kept for the purposes of section 29(1) of the Act:

(a) all measurements mentioned in regulation 7K(1)(a) and information mentioned in regulation 7K(3);

(b) all calculations mentioned in regulation 7K made by the qualified person in preparing the assessment report;

(c) the drawings of the prescribed system plant room layout indicating details of the location of every prescribed measuring instrument and any test plug or thermowell;

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(d) all schematic drawings of the prescribed system;

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(e) all calibration certificates from accredited laboratories or factory calibration certificates from manufacturers for every prescribed measuring instrument;

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(f) all input parameters for every prescribed measuring instrument;

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(g) the technical specifications of each component of the prescribed system;

(h) any other information relied on in preparing the assessment report.

(2)  For the purposes of section 29(2)(a) of the Act, the prescribed period to keep and maintain the records mentioned in paragraph (1) in relation to an assessment report is 5 years after the date the assessment report is submitted.

(3)  Without affecting paragraph (2), the measurements mentioned in regulation 7K(1)(a) and information mentioned in regulation 7K(3) must be kept in the energy management system for a period of at least 3 years after the date the assessment report is submitted.

[S 972/2020 wef 01/12/2020]

 

Made this 17th day of April 2013.

CHOI SHING KWOK

Permanent Secretary,
Ministry of the Environment and
Water Resources,
Singapore.

[MEWR C030/01/129 V 5; AG/LLRD/SL/92C/2012/1 Vol. 3]