Energy Conservation Act: duties of registered corporations

Who has to register

A corporation must register with NEA if its business activities consume more than 54 terajoules (TJ) of energy per year, in at least two of the three preceding calendar years, in one of these sectors:

• (a) manufacturing and manufacturing-related services
• (b) supply of electricity, gas, steam, compressed air and chilled water for air-conditioning
• (c) water supply, sewage and waste management

Three qualifiers are easy to miss and they change who is caught:

1. The business activity must be carried out at a single site. Energy summed across scattered sites does not trigger registration.
2. Registration must be applied for within 6 months of meeting the criteria.
3. Sector limb (b) is precise. It is the supply of electricity, gas, steam, compressed air and chilled water for air-conditioning - not energy use in general.

For scale, 54 TJ is roughly the annual energy consumption of a substantial factory or a large industrial utility plant.

Core duties of a registered corporation

• Appoint an energy manager with sufficient training.
• Submit an annual report on energy consumption, energy production and greenhouse gas emissions.
• Submit an energy efficiency improvement plan by 30 June each year, covering each business activity under the corporation's operational control.
• Keep complete and accurate records.
• Implement an Energy Management System (EnMS): an energy management team, annual energy reviews and an EnMS report.

All submissions go through NEA's EDMA portal, the same portal used for carbon tax reporting.

Energy Efficiency Opportunities Assessment (EEOA)

An EEOA is a structured hunt for cost-effective energy savings, carried out by a certified assessor.

First assessment. Corporations with operational control established before 2 June 2017 had to submit by 31 December 2021. Those establishing operational control after 2 June 2017 have 6 years from that date.

Later cycles - and the cadence depends on size:

So a mid-sized registered corporation is not on an automatic cycle. It responds when NEA asks.

Sign-off. An EEOA report must be signed by the certified EEO assessor who led the assessment, endorsed by the corporation's energy manager for data accuracy, and endorsed by the chief executive. Requiring the CEO's signature is deliberate: it puts energy performance on the desk of someone who can authorise capital spending.

Reports are submitted via EDMA using prescribed forms, containing the information specified in Regulation 22 of the Energy Conservation (Energy Management Practices) Regulations 2013.

Recent changes

Subsidiary legislation amendments were published on 24 November 2025, including Minimum Energy Efficiency Standards (MEES) for water-cooled chilled water systems, taking effect from 1 December 2025 for existing industrial facilities. Chilled water systems are typically the largest single electricity load in a Singapore industrial or commercial building, so a minimum standard there has a large practical effect.

The Energy Conservation (Amendment) Bill also introduced the requirement for certified energy managers to endorse EnMS and EEOA reports.

Related legislation

The Energy Conservation Act 2012 and its subsidiary legislation, including the Energy Conservation (Greenhouse Gas Measurement and Reporting) Regulations 2017 and the Energy Conservation (Registrable Corporations) Order 2013, are published on Singapore Statutes Online at https://sso.agc.gov.sg/SL/ECA2012-S248-2013 and related addresses.

How this connects to climate reporting

The annual energy and greenhouse gas report required here produces much of the same underlying data as a Scope 1 and Scope 2 inventory under the GHG Protocol. A registered corporation that is also an SGX-listed issuer should build one dataset and use it twice rather than running two parallel exercises.