As Singapore advances its circular economy and decarbonisation objectives, chemical recycling, and waste gasification in particular, has attracted growing attention as a potential complement or alternative to conventional waste-to-energy (“W2E”) incineration. This article examines the legal and regulatory landscape relevant to these technologies, identifies key challenges and opportunities, and sets out practical recommendations for regulatory reform.

Chemical recycling refers to processes that break down plastic polymers into smaller molecules, either to recover the constituent monomers or to produce new chemical feedstocks. It is distinct from mechanical recycling, which physically reprocesses plastics without altering their chemical structure.

Today, carbon-containing waste such as packaging waste, municipal solid waste, sewage sludge, and agricultural waste is predominantly incinerated in Singapore for energy production under a W2E model. However, waste gasification facilities such as the Waste-to-Energy Research Facility (WtERF) at Tuas South have demonstrated that it is feasible to harness certain carbon waste streams to produce synthesis gas or syngas, a valuable intermediate for downstream chemical production.

The legal and regulatory environment presents both opportunities and challenges that may influence a shift from W2E towards alternative waste-to-products (“W2P”) approaches such as through waste gasification. There is a compelling business case for this transition. Singapore’s carbon tax is rising to S$50–80/tonne by 2030, making waste incineration more expensive and W2P alternatives more attractive. Green finance frameworks are starting to favour circular economy solutions over energy recovery, possibly opening the door to more funding. Businesses that engage early with W2P and its evolving legal framework will be better placed to capture new opportunities and manage the risks.

Opportunity: Carbon Markets and Emerging Green Finance Regulation

Singapore’s Carbon Pricing Act 2018 (“CPA”) established a carbon tax regime that has been progressively increasing from S$5/tonne (2019–2023), S$25/tonne (2024–2025), S$45/tonne (2026–2027), and, eventually, to S$50–80/tonne by 2030. This creates a legal and financial incentive for industry to consider alternatives to simple incineration.

Carbon tax-liable facilities may use eligible International Carbon Credits (“ICCs”) to offset up to 5% of their taxable emissions, subject to the eligibility criteria for ICCs as prescribed in the Carbon Pricing (Carbon Tax, Carbon Credits and Registries) Regulations 2020.

From a legal standpoint, the opportunity is notable for the following reasons:

Valorisation of Syngas as a Decarbonisation Product

Waste gasification produces syngas, certain components of which can be used as a feedstock to produce green methanol, ammonia, or hydrogen. These products are increasingly recognised under international frameworks (e.g., the EU’s Renewable Energy Directive III (“RED III”) and Singapore’s own Hydrogen Strategy) as eligible low-carbon fuels or feedstocks, potentially attracting carbon credits or green certification.

The RED III, formally adopted by the EU in 2023, updates and strengthens the EU’s renewable energy framework by setting the binding target for renewable energy to at least 42.5% of the EU’s overall energy mix by 2030 (with an aspiration to reach 45%), and introduces accelerated permitting procedures, sector-specific targets (including for industry, transport, buildings, and heating and cooling), and enhanced sustainability criteria for bioenergy. It amends and recasts the previous RED II, forming a central pillar of the EU’s REPowerEU plan aimed at reducing dependence on fossil fuels and accelerating the clean energy transition. Its recognition of waste-derived fuels and feedstocks as potentially eligible low-carbon products is directly relevant to the classification and marketability of syngas and its derivatives.

International Carbon Credit Transactions

Pursuant to Article 6 of the Paris Agreement, Singapore has been actively negotiating bilateral implementation agreements with various countries. If syngas-derived products can be structurally classified as achieving Internationally Transferred Mitigation Outcomes (ITMOs), operators could monetise the carbon abatement from switching away from incineration. This creates a legally novel but commercially compelling revenue stream that pure W2E cannot easily access.

Green Taxonomy Alignment

The Monetary Authority of Singapore (“MAS”) Singapore-Asia Taxonomy for Sustainable Finance and the broader ASEAN Taxonomy for Sustainable Finance are beginning to distinguish between energy recovery from waste and circular economy solutions that recover materials or produce low-carbon feedstocks (considered greener). The MAS Singapore-Asia Taxonomy for Sustainable Finance notes under Objective 4 (Promote resource resilience and circular economy) that “Examples of activities that could contribute significantly to resource efficiency and resilience include: a) Management of wastes from chemicals, plastics, packaging…” Access to green-labelled financing, with materially lower cost of capital, could therefore legally and commercially favour gasification projects over incineration.

In short, the evolving carbon pricing and green finance legal architecture in Singapore may create conditions in which waste gasification is incentivised while waste incineration is progressively disadvantaged.

Challenges for W2P in Singapore

The transition from W2E to W2P models raises several legal challenges. The most fundamental pain point is the issue of regulatory classification: how waste gasification facilities and their outputs are classified under Singapore’s existing legal frameworks, which were largely designed with W2E incineration in mind. Transitioning to W2P models would necessitate legislative amendments to accommodate new processing technologies and product classifications. Beyond classification, there are also issues of output quality and liability, feedstock access, land use constraints, and intellectual property protection. The principal issues are outlined below.

Regulation and Licensing of Waste Management Facilities

The National Environment Agency (“NEA”) strictly regulates waste management facilities. Gasification involves thermal treatment of waste, but the output (syngas) is an industrial gas rather than electricity. The legal question of whether a gasification facility is classified as a waste treatment facility, a chemical production facility, or an energy facility (or all three) creates multi-agency licensing complexity involving NEA (waste management), the Energy Market Authority (energy feedstock), and potentially the Urban Redevelopment Authority (planning and land use). The classification could trigger different regulatory obligations, safety standards, and approval timelines.

W2P facilities would require operating licences from the NEA, but current licensing categories are calibrated for conventional waste treatment. Updated licensing pathways, addressing feedstock specifications, processing conditions, and output quality, would need to be legislatively created to enable W2P operators to function with improved legal certainty.

Output Classification, Quality Standards and Liability

A critical legal ambiguity is whether syngas derived from waste gasification is itself classified as waste under the Environmental Public Health Act 1987 (“EPHA”) or as a commercial chemical product. If syngas retains a “waste” classification at any stage of processing, it attracts the full suite of hazardous/toxic waste handling regulations, significantly increasing compliance costs and potentially rendering projects commercially unviable. This is a live debate in many jurisdictions (including the EU, where the “end-of-waste” criteria under the Waste Framework Directive have been contentious) and Singapore’s regulatory framework has not yet clearly resolved it.

EPHA stipulates that “waste” includes (a) any substance which constitutes a scrap material or an effluent or other unwanted surplus substance arising from the application of any process; and (b) any substance or article which requires to be disposed of as being broken, worn out, contaminated or otherwise spoiled, and anything which is discarded or otherwise dealt with as if it were waste is presumed to be waste unless the contrary is proved.

Liability for Contaminated Outputs and Environmental Harm

W2P processes carry the risk of producing outputs contaminated with toxic substances. Singapore’s environmental liability regime under the Environmental Protection and Management Act 1999 may need to be applied or extended to clearly allocate civil and regulatory liability between waste feedstock suppliers, W2P operators, and downstream product users, particularly where contaminated products may cause harm to human health or the environment. Clear liability chains are essential for investor confidence and for ensuring effective legal recourse.

Syngas and chemical outputs derived from mixed plastic waste may contain contaminants. Downstream users of these outputs could face liability if contamination causes harm, and there is currently no Singapore Standard specifically governing chemical recycling outputs. Furthermore, supply chain liability allocation between gasification operators and downstream purchasers is legally underdeveloped. Establishing legally clear and enforceable quality benchmarks for W2P outputs is key for market acceptance and liability allocation.

Extended Producer Responsibility (“EPR”) Obligations and Cross-Border Waste Trade

The Resource Sustainability Act 2019 (“RSA”) introduces EPR schemes for regulated materials such as e-waste, packaging, and food waste. It remains legally unclear whether plastics processed through gasification qualify as “recycled” for the purposes of EPR compliance targets under the RSA. Regulators may treat syngas production as energy recovery rather than material recovery, which carries different compliance consequences. Producers relying on gasification to meet their RSA obligations risk regulatory exposure if the NEA reclassifies the process. A W2P framework may benefit from the expansion and restructuring of EPR regulations to create clear legal obligations on producers to design products that are recoverable and reusable as secondary raw materials, rather than merely meeting waste diversion targets.

Cross-border feedstock sourcing raises further legal complexity. Singapore is party to the Basel Convention, which governs the transboundary movement of hazardous waste. A W2P economy that relies on importing waste feedstock from regional neighbours or exporting processed materials would need to navigate Basel Convention compliance, bilateral trade agreements, and domestic customs and import/export regulations, creating a layered legal compliance burden. Further, the import or export of mixed or contaminated plastics may require prior informed consent procedures, adding legal complexity and delay.

Intellectual Property Considerations

W2P technologies often involve proprietary conversion processes, biological agents, or chemical formulations. Legal protection of these innovations through patents, trade secrets, and technology licensing agreements is essential to incentivise private sector investment, and Singapore’s IP legal infrastructure under the Patents Act 1994 is well-suited to support this, though enforcement and licensing structures may need to be deliberately designed for circular economy contexts.

In essence, the absence of a clear, fit-for-purpose legal and regulatory classification framework for waste gasification in Singapore means that developers face legal uncertainty across multiple dimensions, from multi-agency licensing friction and the risk that syngas may be legally treated as waste rather than a valuable commodity, to unresolved questions of product liability and feedstock access. These challenges could undermine the business case for W2P and require coordinated regulatory attention.

Recommendations for Regulatory Reform and Deploying Emerging Technologies

From a corporate and energy law perspective, regulation and policy play a determinative role in whether an emerging technology succeeds or fails commercially. The technology itself is seldom the limiting factor; more often, it is the legal and regulatory architecture surrounding it that either enables or constrains deployment at scale.

Carbon pricing regimes, renewable portfolio standards, and waste diversion mandates transform what would otherwise be voluntary corporate behaviour into legally enforceable obligations, and therefore bankable revenue streams. Investors and lenders can then underwrite projects against regulatory certainty. Singapore’s CPA is a good example of this principle in action.

The following sets out practical recommendations for adapting Singapore’s regulatory environment to enable waste gasification and W2P models.

Establish a Clear “End-of-Waste” Legal Framework

Singapore could define the criteria under which a waste-derived product, including syngas, ceases to be legally classified as “waste”. A possible approach would be to review and adapt the EU’s Waste Framework Directive end-of-waste criteria approach, tailored to Singapore’s waste streams. This could be supported by designating a lead government agency with a clear mandate and timeline to process applications for waste gasification and W2P facilities. This would provide developers and funders with certainty on how their facility will be classified and regulated before they commit capital.

Reform Waste Allocation and Feedstock Access Rules

To allow gasification operators to access commercially viable volumes of feedstock, Singapore could:

• Pilot a competitive tendering framework for specific waste streams (e.g., commercial and industrial waste) that allows W2P operators to bid against incineration operators on a technology-neutral basis, with evaluation criteria that include carbon abatement, resource recovery value, and circular economy contribution.
• Facilitate direct offtake agreements between large waste generators (e.g., food manufacturers, logistics operators) and certified gasification facilities, reducing dependence on NEA-directed waste flows.

Extend Carbon Pricing Recognition to Waste-Derived Syngas and Downstream Products

Whether gasification qualifies for carbon credits under the CPA depends on methodological recognition by regulators. This remains unresolved, potentially creating uncertainty for project financing. If gasification is treated as incineration for carbon accounting purposes, operators may face unexpected carbon tax liabilities.

The CPA (and its subsidiary regulations) could be amended to clearly recognise avoided landfill and incineration emissions as eligible for carbon credit generation under Singapore’s carbon market framework.

Regulatory Sandboxes and Public Procurement

Regulatory sandboxes could allow W2P technology developers to test and demonstrate new solutions without bearing the full burden of compliance with frameworks designed for incumbent technologies. The MAS FinTech Regulatory Sandbox provides a well-established precedent; analogous frameworks in the energy and waste sectors could be developed to permit pilot-scale gasification projects to operate under modified regulatory conditions for a defined period, with clear pathways to full licensing upon successful demonstration.

Public procurement can further de-risk first-of-kind projects by positioning government agencies as anchor offtakers, providing the revenue certainty that private capital requires. Government agencies represent a significant potential offtaker for W2P products. Legal reform to Singapore’s public procurement guidelines and related circulars to mandate or prefer W2P-derived materials would create a stable demand signal. Without such mandates, W2P operators may face an uneven playing field against incumbent incineration and landfill alternatives that benefit from established procurement relationships.

Standardisation and Certification Frameworks for W2P Outputs

Standardised certification, particularly for novel products like syngas-derived green hydrogen or green methanol, creates the legal framework that allows products to be traded, financed, and recognised internationally. Singapore could work with relevant standards bodies to develop Singapore Standards specifically governing chemical recycling outputs, addressing quality benchmarks, contaminant thresholds, and chain-of-custody requirements. Without such standards, even technically superior W2P products may struggle to access premium markets or attract green-labelled financing.

In conclusion, Singapore’s legal and regulatory framework, while well-suited to conventional W2E incineration, does not yet adequately accommodate W2P technologies such as waste gasification. The evolving carbon pricing regime and green finance taxonomy present meaningful opportunities, but realising them requires addressing significant legal gaps, notably in regulatory classification, end-of-waste criteria, carbon credit eligibility, multi-agency licensing, output standards and liability, EPR scope, and W2P certification. Coordinated reform across these areas, supported by mechanisms such as regulatory sandboxes, offers a practical path forward. A deliberate and integrated regulatory response could help Singapore realise the potential of W2P as part of its circular economy and decarbonisation agenda.

In the meantime, businesses should not wait for the rules to be finalised as early movers will likely be best placed to benefit. Companies in waste generation, waste management, or chemical production should: monitor regulatory signals from the NEA, MAS, and other agencies on W2P licensing and carbon credit eligibility; review their licensing needs given the multi-agency landscape; assess carbon tax exposure under the CPA and opportunities to earn carbon credits through W2P; check whether their EPR strategies under the RSA risk reclassification; and engage with industry bodies and advisers to access green financing as certification frameworks develop.