The supermarket supplier programs have reached the middle of the supply chain.

For a few years, the emissions expectations inside the major supermarkets' supplier programs were a big-brand problem. The multinationals had sustainability teams to answer them; everyone else assumed the requirements would stay up there.

That assumption has quietly expired. Both majors now run supplier programs that expect emissions engagement well below the multinational tier, with science-based-target expectations carrying dates in the 2027 range. The letters are landing with family-owned food manufacturers, regional growers and mid-sized distributors whose entire head office is smaller than a multinational's sustainability department.

The pattern repeats at the next tier down: distributors and private-label manufacturers report the strictest asks of all, because own-brand suppliers sit closest to the retailer's reported number.

What's actually being asked

Strip the program language away and the requests come down to three things, in escalating order:

A number. Your emissions for the year, in kg or tonnes CO₂-e, usually split by scope. This is the baseline, and for most suppliers it's electricity, gas and vehicles, all of which are sitting in your bills already.

Evidence for the number. Method, emission-factor source, what's included and what isn't. This is where spreadsheet answers fall over: the number exists but the working doesn't.

A trajectory. Eventually, a target. But a target without a baseline is a guess with a deadline; every credible program treats measurement as the entry ticket.

What the buyer's analyst checks

The person scoring your submission isn't evaluating your environmental conviction. They're checking whether your answer fits the framework they report under: recognised factors (in Australia, the National Greenhouse Accounts), stated boundaries, consistent method year to year. Structured, sourced answers score; earnest prose doesn't.

Which contains genuinely good news for a smaller supplier: you don't need a program, a consultant retainer or a certification. You need a defensible baseline and the discipline to update it annually. A bounded, knowable piece of work.

The mistake to avoid

Don't answer the first questionnaire with a one-off estimate someone builds in a fortnight and nobody can reproduce. The program asks again every year. A reproducible baseline answered in 2026 becomes an afternoon in 2027; a one-off estimate becomes the same panic annually, with the added problem that this year's number won't reconcile with last year's.