Earth Day 1970 was about changing laws. Earth Day 2026 is about keeping your enterprise contracts.
Right now, somewhere in your biggest customer’s organisation, someone is building a list. Suppliers who can hand over their carbon data on one side. Suppliers who can’t on the other. That’s where more than half a century of environmental movement has landed. It started as a single day of action in the United States in 1970. By 1990, it had spread to over 140 countries and reshaped global regulation along the way. Now it’s arrived at the place where it affects you most: procurement.
If you run a small business or startup in Singapore, this is for you. Especially if you’ve known sustainability is becoming a bigger deal but haven’t had the time to dig in.
What you need to know.
What’s happening? Both the Singapore government and large enterprise buyers are moving towards mandatory reporting of carbon emissions across supply chains, not just emissions from their own offices and factories. That means they will need data from the businesses they buy from. Including yours.
Why does it matter to you? You don’t have to be a listed company to feel this. If you sell to a larger business (a multinational, a listed Singapore firm, a government-linked company) they will increasingly ask you for your carbon numbers as part of doing business. Suppliers who can provide that data win contracts. Suppliers who can’t risk quietly losing them.
What they’ll actually ask for. Not a 200-page report. A basic emissions figure, a credible method behind it, and proof you’re tracking it year over year. That’s it, at least for now. A green logo and a bulk offset purchase won’t cut it. They want data they can audit.
What to do. Start early. Singapore offers free government tools to help you assess where you stand, and subsidised programmes that co-fund the cost of building a proper emissions baseline. The businesses that start now will be ready when the ask comes. The ones that wait will be scrambling to pull numbers together in the middle of a contract renewal. You don’t need a consultant to take the first step. You need a morning, an electricity bill, and the right starting link. We’ll show you three.
From Street Protests to Supplier Contracts: How we got here
That global shift from activism to regulation to procurement played out faster in Singapore than in most places. The Singapore Green Plan 2030, launched in February 2021, set a whole-of-nation agenda for sustainable development across five pillars (City in Nature, Sustainable Living, Energy Reset, Green Economy, and Resilient Future) aligned with Singapore’s goal of reaching net zero emissions by 2050.
Alongside it, Singapore’s listing regulator (SGX RegCo) and its corporate registry (ACRA) began rolling out mandatory climate-related disclosures, rules requiring listed companies to publish standardised data on their emissions and climate risks. The message from both was the same: the green transition isn’t a global trend Singapore is watching. It’s the operating system the national economy is migrating onto.
Why Your Emissions Are Your Client’s Problem Too
Before we get to the squeeze, here’s the vocabulary you need. When a company counts its carbon footprint, it groups emissions into three buckets:
Scope 1 is what a company burns directly: fuel in its vehicles, gas in its boilers, anything it combusts itself. Scope 2 is the electricity it buys from the grid. Scope 3 is everything else in its value chain: the emissions from the suppliers it buys from (upstream) and from the customers who use its products (downstream). This framework comes from the GHG Protocol, the global standard that almost every major climate disclosure rule, including Singapore’s, builds on top of.
For most large companies, Scope 3 is where the real weight sits. And that’s where your SME enters the picture. You are in your enterprise client’s Scope 3 upstream. Their disclosures depend on your data.
So what does that look like in practice? The regulatory pressure isn’t aimed directly at you, at least not yet. Under the SGX RegCo and ACRA roadmap, all companies listed on Singapore’s stock exchange have to report their Scope 1 and 2 emissions for financial years starting from 1 January 2025 (with reports published in 2026). Scope 3 reporting became mandatory for the 30 biggest listed companies, the constituents of Singapore’s benchmark Straits Times Index, from FY2026. For smaller listed companies and large non-listed firms, the timelines were extended in August 2025, with most now phased in later in the decade.
So if the law isn’t coming for SMEs directly, why is the pressure already here?
Because Scope 3 is where most of a large company’s footprint actually lives. A January 2026 report by Grant Thornton Singapore, produced in collaboration with the Singapore Computer Society, cited research showing that approximately 70% of large companies’ emissions fall under Scope 3, originating from their supply chains and partners. The report concluded that multinationals cannot achieve significant decarbonisation without the active participation of SMEs.
For some companies the share is even higher. Qi Ni Lee, Corporate Responsibility and DE&I Lead at Sodexo, told Sustainability Magazine in April 2025 that Scope 3 accounts for about 99% of Sodexo’s total footprint. More than 90% of their clients now ask about sustainability during contract renewal. In her words, it has become “a licence to operate.”
Your SME’s carbon footprint isn’t being audited by the government. It’s being audited by your biggest customer.
The financial pressure goes beyond disclosure. Singapore’s carbon tax applies to large industrial emitters, and the rate has risen sharply in recent years, with a government trajectory that will see it continue climbing through the end of the decade. Those are exactly the companies buying from SMEs. As the tax goes up, so does their incentive to push efficiency demands down the supply chain.
What Buyers Actually Want (It’s Simpler Than You Think)
Enterprise procurement teams in Singapore aren’t asking SMEs for a 200-page sustainability report. They want three things: a basic Scope 1 and 2 emissions number, a credible methodology behind it (usually the GHG Protocol described earlier), and evidence you’re tracking it year over year. That’s the floor. Everything beyond that is an advantage.
And the gap is real. According to the same Grant Thornton Singapore report, nearly 70% of Singapore SMEs have yet to integrate ESG considerations (environmental, social, and governance factors) into their supply chain and procurement. The first movers have room to win.
For most SMEs, getting to the floor is closer to a spreadsheet exercise than a consulting engagement. Your electricity bills give you Scope 2. Your fuel receipts and any owned vehicles give you Scope 1. Free local emission factors are available through the Singapore Emission Factors Registry, the multipliers that turn kilowatt-hours and litres of petrol into tonnes of CO₂e (the standard unit for measuring carbon emissions). That’s a working carbon inventory, built from documents you already have.
Big Companies Are Already Pulling Their Suppliers Into Compliance
In Singapore, the pattern has a name: Queen Bee programmes. The metaphor is exactly what it sounds like. A large buyer, the “queen bee,” takes a group of its SME suppliers (the worker bees) through structured sustainability workshops and advisory support, because the buyer needs their emissions data for its own disclosures. Everyone ends up better off: the SMEs get trained and funded, and the buyer gets a cleaner Scope 3 number.
In October 2024, the Singapore Business Federation, Singapore Post, EY and OCBC jointly launched one of the biggest examples: QUEST, the Queen Bee Enabled Sustainability Transition programme. SingPost, the first logistics provider in Singapore to join the programme, has also built sustainability requirements directly into its procurement criteria, meaning if you supply SingPost, sustainability data is now part of what you have to deliver. Through the programme, SingPost’s SME suppliers go through workshops on baseline emissions measurement and decarbonisation strategies. Michelle Lee, then Chief Sustainability Officer at SingPost, put it plainly at the programme’s launch:
“While sustainability, particularly Scope 1 and 2 reporting, may not currently be a top priority for many, it is rapidly becoming essential.”
For SMEs in SingPost’s supply chain, that shift is already here. And SingPost isn’t alone. CDL runs an SME Suppliers Decarbonisation Queen Bee programme. SATS runs its own Supplier Engagement programme. These aren’t PR gestures, they’re large buyers methodically pulling their supply chains into compliance, because their own climate disclosures depend on it.
If you supply into a company like this and haven’t had the carbon conversation yet, you will. The only question is whether you start it or they do.
Three Free (or Subsidised) Ways to Start This Quarter
SME Sustainability Hub. A free self-assessment portal run by Enterprise Singapore. Fastest way to see where your business sits today, no cost, no commitment. The Hub also links to tools like Gprnt, which lets you pull your utility data directly using your Corppass.
Productivity Solutions Grant for Carbon Management. A long-running government scheme that co-funds pre-approved software for SMEs, and carbon accounting tools are now part of the list, so you’re not stuck building spreadsheets forever.
SME Sustainability Reporting Programme. The programme co-funds advisory costs for SMEs developing their first sustainability report. The funding rate recently dropped from 70% to 50%, and the current window runs through October 2027. The programme has not been extended beyond that, so if you’re planning to move, the case for doing it sooner rather than later is straightforward.
Start Here: One Morning Is All It Takes
This isn’t about perfection. It’s about being ready for the conversation when it comes. And it will come. Whether it’s a supplier questionnaire, a contract renewal, or a new tender requirement, your biggest clients are going to ask for your emissions data. The businesses that have a baseline ready will answer confidently. The ones that don’t will be playing catch-up.
Getting started doesn’t have to be hard. For a basic emissions picture, you need your utility bills and any fuel or vehicle records. Some government tools even let you pull your energy and water data directly using your Corppass, so you’re not chasing paperwork. Between that and the free self-assessment on the SME Sustainability Hub, a morning is enough to see where you stand.
If you need more depth or external support to build a proper baseline, the government is co-funding that too through programmes like the PSG for carbon management and the SME Sustainability Reporting Programme. The funding is time-limited and has not been extended beyond October 2027, so it’s worth looking into while it’s still available.
Sustainability is something we care about deeply at MCR. We’ll continue to share what we’re learning, bring these conversations into the open, and connect founders and operators who want to make a real difference. Follow us on LinkedIn to stay in the loop.
Sources to learn more
SME Sustainability Hub — smesustainability.gov.sg
Gprnt — gprnt.ai
Singapore Emission Factors Registry (SEFR) — sefr.netzerohub.sg
Singapore Green Plan 2030 — greenplan.gov.sg
ACRA and SGX RegCo, “Extended timelines for most climate reporting requirements to support companies” (25 August 2025) — sgxgroup.com
Grant Thornton Singapore (in collaboration with Singapore Computer Society), “Scaling sustainability: Why Singapore’s SMEs hold the key to national climate success” (January 2026) — grantthornton.sg
Sustainability Magazine, “Sustainability LIVE Singapore: Sodexo, Net Zero Supply Chain” (29 April 2025) — sustainabilitymag.com
Singapore Business Federation / SingPost / EY / OCBC, “New Queen Bee Enabled Sustainability Transition (QUEST) programme” (18 October 2024) — sbf.org.sg
Enterprise Singapore, SME Sustainability Reporting Programme — enterprisesg.gov.sg
GHG Protocol — ghgprotocol.org
