Statute Details
- Title: Electricity (Prescribed Generation Entities) Regulations 2025
- Act Code: EA2001-S566-2025
- Legislation Type: Subsidiary legislation (SL)
- Authorising Act: Electricity Act 2001 (specifically powers under section 103)
- Enacting Authority: Energy Market Authority of Singapore (EMA), with Ministerial approval
- Commencement: 1 September 2025
- Status: Current version as at 27 March 2026
- Key Provisions:
- Section 1: Citation and commencement
- Section 2: Definitions (including “10-year forward period”, “allocated quantity”, and “GDF”)
- Section 3: Prescribed generation entities (PGE designation via Schedule)
- Section 4: Minimum amounts of gas (contractual gas procurement requirements over a 10-year planning horizon)
- Schedule: Prescribed generation entities (entities specified as PGEs)
What Is This Legislation About?
The Electricity (Prescribed Generation Entities) Regulations 2025 (“PGE Regulations”) are subsidiary rules made under the Electricity Act 2001 to operationalise a specific regulatory framework in Part 5B of the Act. In practical terms, the Regulations identify certain electricity generation companies as “prescribed generation entities” (PGEs) and then impose a structured requirement on how much gas each PGE must contract to obtain from the gas importer (Gasco) over a long-term planning horizon.
The Regulations sit at the intersection of electricity generation planning and gas supply contracting. They are designed to ensure that, as Singapore’s electricity demand evolves, the gas supply arrangements for gas-driven generating units are sufficiently robust. The mechanism is forward-looking: it uses a “10-year forward period” and a formula that links (i) forecast gas demand for electricity generation, (ii) a time-phased percentage factor, (iii) the PGE’s share of expected generation, and (iv) adjustments for gas quantities the PGE has already contracted.
For lawyers advising generation companies or Gasco, the key point is that the Regulations translate planning assumptions into enforceable contractual minimums. The obligation is not merely informational; it requires contract terms between each PGE and Gasco to include minimum gas procurement quantities and to accommodate changes notified by the Authority.
What Are the Key Provisions?
Section 3: Prescribed generation entities (PGE designation)
Section 3 provides that each entity specified in the Schedule is prescribed for the purposes of Part 5B of the Electricity Act 2001 as a PGE. This designation is foundational. Only entities listed in the Schedule are subject to the gas minimum contracting regime in regulation 4. In practice, counsel should treat the Schedule as the “gate” to applicability: if a client is not listed, the specific minimum gas contracting obligations in these Regulations may not apply (though other obligations under the Act could still be relevant).
Section 4: Minimum amounts of gas (the core regulatory formula)
Regulation 4 is the heart of the PGE Regulations. It requires that, for every 10-year forward period, a PGE must include in its contract with Gasco a term requiring the PGE to obtain gas from Gasco for the 10-year forward period in an amount not less than a specified calculation for each year. The calculation is expressed as (A × B × C) − D for each year.
Each component has a defined meaning:
- A (Gas Demand Forecast / GDF): the total quantity of gas the Authority projects will be required for electricity generation by all PGEs to meet projected electricity demand in Singapore for that year.
- B (time-phased percentage factor): a declining schedule depending on the year’s position within the 10-year period:
- 80% for years 1–2
- 60% for years 3–4
- 45% for years 5–6
- 30% for years 7–8
- 15% for years 9–10
- C (PGE attribution percentage): the percentage of expected total electricity generation by all PGEs for that year that may be attributed to the specified PGE’s gas-driven generating units, determined by the Authority.
- D (already contracted gas): the amount of gas the specified PGE has already contracted to obtain for that year under contracts entered into pursuant to section 41I(1) and contracts mentioned in section 41I(2) of the Act.
Section 4(2)–(4): How the formula is applied and negative values handled
The Regulations require the PGE’s minimum gas term to be computed year-by-year within the 10-year forward period. Importantly, regulation 4(4) provides a safeguard: if the calculated amount for a year is negative, it is treated as zero. This matters for contracting strategy. If a PGE has already contracted for more gas than the formula would otherwise require (after applying A, B, and C), the minimum obligation for that year does not become a negative “refund” or reduction below zero; it simply becomes zero.
Section 4(3): Determining C using an economic dispatch model
The Regulations specify the method for calculating C. The Authority must use an economic dispatch model to simulate expected total electricity generation by all PGEs for the relevant year, and then attribute a percentage of that expected generation to the specified PGE’s gas-driven generating units based on their capacities and efficiencies. This is a technically significant requirement: it embeds modelling assumptions into the contractual minimums and provides a structured basis for the Authority’s attribution.
For practitioners, this raises typical legal questions: what data is used in the model, how sensitivities are handled, and whether the model’s outputs are contestable. While the Regulations do not provide a dispute mechanism within regulation 4 itself, the explicit requirement to use an economic dispatch model is a procedural constraint on the Authority’s determination of C.
Section 4(5)–(7): Notification timing, changes, and contract modification terms
The Regulations also address governance and contract administration. The Authority must notify each PGE in writing of its respective allocated quantities for each year in the 10-year forward period not later than 18 months before the start of that period. The “allocated quantity” is defined in section 2 as the amount computed under regulation 4(1) for a specified PGE for any year in a 10-year forward period.
However, the Authority is not locked into the initial allocation. Under regulation 4(6), the Authority may change any allocated quantity earlier notified to any PGE for any year in the period if new circumstances arise that necessitate the change. The Authority must then immediately notify the PGE in writing of the change.
Finally, regulation 4(7) requires that the PGE’s contract with Gasco include a term that the allocated quantity for any year is to be modified to take into account any change made by the Authority. This is crucial for enforceability: it ensures that the contractual framework can reflect regulatory updates without requiring renegotiation from scratch each time circumstances change.
Section 2: Definitions that drive the regime
Although the substantive obligations are in regulation 4, the definitions in section 2 shape how the regime operates. The “10-year forward period” is defined as beginning on 1 January 2028 for the first period, and then beginning on 1 January of every even-numbered year thereafter. This matters for planning cycles and contract drafting. The definition of “Gasco” ties the regime to the holder of a gas importer’s licence (central import) under the Gas Act 2001.
How Is This Legislation Structured?
The PGE Regulations are structured in a conventional format for Singapore subsidiary legislation:
- Section 1 (Citation and commencement): identifies the Regulations and states they come into operation on 1 September 2025.
- Section 2 (Definitions): defines key terms used in the Regulations, including the 10-year forward period, allocated quantity, GDF, gas-driven generating unit, Gasco, and PGE.
- Section 3 (Prescribed generation entities): designates PGEs by reference to the Schedule.
- Section 4 (Minimum amounts of gas): sets the formula and procedural requirements for minimum gas contracting, including notification and change mechanisms.
- The Schedule: lists the entities that are prescribed as PGEs.
Who Does This Legislation Apply To?
The Regulations apply primarily to entities that are designated as prescribed generation entities (PGEs) in the Schedule. For those entities, the Regulations impose a contractual minimum gas procurement requirement for each year within each 10-year forward period, in their contracts with Gasco.
Gasco is indirectly implicated because the minimum gas terms must be included in the PGE–Gasco contracts. While the Regulations do not impose a standalone duty on Gasco in the extract provided, Gasco must be a party to the contractual arrangements that incorporate the allocated quantities and modification terms required by regulation 4(7). The Authority’s role is also central: it forecasts gas demand (GDF), determines the attribution percentage C using an economic dispatch model, and issues written notifications and changes.
Why Is This Legislation Important?
From a legal and commercial perspective, these Regulations convert long-term energy planning into binding contracting requirements. The formula-based minimums provide a structured way to allocate gas procurement obligations among PGEs based on forecast demand and each PGE’s expected contribution to generation. This reduces uncertainty compared to purely discretionary allocations, because the Regulations specify the inputs and modelling approach.
For practitioners, the most important practical implications are contract drafting and compliance timing. Contracts with Gasco must include (i) the minimum gas term for each year in the 10-year forward period, (ii) the ability to modify allocated quantities in response to Authority changes, and (iii) alignment with the Authority’s notification timeline (at least 18 months before the start of the forward period). Failure to incorporate these terms could create regulatory non-compliance risk for the PGE.
Additionally, the Regulations create a framework for regulatory updates. The “new circumstances” trigger in regulation 4(6) gives the Authority flexibility, but it is bounded by the requirement that changes be necessitated by new circumstances and be communicated immediately. Counsel should consider how “new circumstances” might be interpreted and what evidence might be relevant if a PGE challenges the basis for a change (even though the Regulations themselves do not set out a formal review process).
Finally, the use of an economic dispatch model to determine C is significant. It suggests that the Authority’s determinations will be grounded in technical modelling rather than ad hoc assumptions. This may be helpful for transparency, but it also means that disputes—if any—may turn on modelling inputs, assumptions, and the attribution methodology based on capacities and efficiencies.
Related Legislation
- Electricity Act 2001 (including Part 5B and provisions referenced in the Regulations, such as sections 41G and 41I)
- Gas Act 2001 (relevant for the definition of Gasco as the holder of a gas importer’s licence (central import))
Source Documents
This article provides an overview of the Electricity (Prescribed Generation Entities) Regulations 2025 for legal research and educational purposes. It does not constitute legal advice. Readers should consult the official text for authoritative provisions.