It’s a Friday morning, three days before the Series B pitch, and Maya is doing final rehearsals in the boardroom with Diane, the new chair. They’ve worked through the financial model, the expansion plan, the retention numbers, the unit economics. Diane has been encouraging. Until she asks a question Maya doesn’t have a clean answer to.
“Tell me about the carbon footprint.”
Maya pauses. It isn’t on the slide deck. She’d talked about farm partners and the fifty-kilometre promise and local sourcing, but those were marketing framings, not measurements. She had a general sense that Greenbox was probably better than supermarket produce, but she’d never put a number on it.
“We’re better than the supermarkets. The supply chain is shorter. The produce travels less. Most of it is from farms within a hundred kilometres of where it’s eaten.”
Diane nods, but her expression doesn’t change. “I believe you. The investors are going to ask for a number.”
“A number for what, exactly?”
“Emissions per box. Water use per box. Food waste as a percentage. The basics. They’ll also ask about the third-party assurance, whether you’ve had the numbers audited. And they’ll ask about your trajectory. It’s not enough to say you’re better than supermarkets. Supermarkets are a low bar. They’ll want to know whether you’re getting better year on year, and by how much.”
Maya pulls out her notebook. This is the kind of moment she always writes down.
Why the board needs this
Diane has seen enough Series B pitches to know that sustainability questions aren’t optional anymore. Ten years ago they would have been a nice-to-have, a few slides near the end about “impact” that the investors nodded politely at before moving on to the financials. That’s changed.
“Two things have shifted,” Diane says. “One, a big chunk of institutional capital has sustainability reporting requirements of its own. Pension funds, sovereign wealth funds, university endowments, they answer to their own trustees, and their trustees answer to regulators and beneficiaries who want to know where the money is going. If those investors put money in Greenbox, they need to be able to report on what Greenbox does. If your numbers don’t exist, or aren’t credible, you’re harder for them to invest in.”
“Two, the customers care. Not all of them. Maybe not even most of them. But the customers who care, care a lot, and they’re the ones who become your biggest advocates. The ones who tell their friends. The ones who turn up to the open kitchens.”
Maya writes both reasons down. She underlines the second one twice.
What gets measured
On Saturday morning, Maya drives to Sam’s house. Sam is the one person on the team who has the full picture of the operation, which farms, which boxes, which delivery routes, which substitutions. If there are numbers to be found, Sam will know where.
They spend the morning at Sam’s kitchen table with a laptop and a stack of supplier invoices. The plan is to figure out what Greenbox could realistically measure by the end of the week.
Lee joins by video call around 10am. He’s done this before at two other food businesses. His view is that sustainability reporting fails in one of two ways: either the company measures nothing and tells a story, or the company measures everything and drowns in data nobody uses. The middle ground is measuring a small number of things consistently and honestly.
“Pick five numbers,” Lee says. “Not ten. Not three. Five. Five is enough to tell a real story and few enough that you can collect them every month without it becoming a full-time job for someone. Every year you publish them. If they get better, you say so. If they get worse, you explain why. That’s the whole game.”
Maya writes down five candidates:
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Food miles per box. Average distance travelled by the produce in a box, from farm to subscriber. Already partially tracked via the supply chain data. Would need some additional work to aggregate properly.
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Kilograms of CO₂e per box. The real target. Harder to measure because it includes farm production emissions, not just transport. Would require collaboration with farm partners or use of a standard database like DEFRA’s emission factors or Australia’s equivalent.
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Food waste per box. What percentage of produce bought by Greenbox ends up in subscribers’ kitchens vs what’s discarded at packing or delivery. A clean operational metric that the team already tracks at the warehouse.
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Water use per box. Harder. Water use happens mostly at the farm, and different farms use wildly different amounts depending on what they grow. Would need to work with farm partners to get even rough estimates.
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Percentage of produce from farms within 50km. The “fifty-kilometre promise” metric. This one is easy. Greenbox already tracks it for the supply chain dashboard.
Lee nods. “Drop the water one. It’s genuinely hard to measure honestly, and if you can’t measure it honestly, don’t report it. The other four are good. Add one more, subscriber-reported cooking of the whole box. That’s the missing half of food waste, and only you can measure it. Nobody else in the industry has that data.”
Maya considers it. It’s an unusual metric but it’s true to what Greenbox actually does. The whole point of the service is that subscribers cook what they receive, reducing the waste that would otherwise come from buying more than you need at the supermarket.
She adds it as the fifth metric.
The boring work
The weekend is spent on the boring work. Sam goes through twelve months of supply chain data and calculates the average distance produce travels. Tom writes a short script that pulls the data out of the Greenbox database and computes the “within 50km” percentage on a rolling monthly basis. Priya, who has a chemistry background from her undergraduate degree, starts looking up emission factors for common produce categories. Cabbage, beetroot, apples, tomatoes, kale. Australian farms. Road freight. Cold storage.
The emissions number is the hardest. Nobody on the team has done carbon accounting before, and the literature is full of conflicting estimates depending on methodology. Priya picks a methodology that is conservative, she chooses higher emission factors where there’s uncertainty, and documents every assumption in a spreadsheet. The assumption log runs to four pages. It would not survive a sophisticated audit, but it’s honest about what it’s doing and why.
The food waste number turns out to be the most interesting. Greenbox’s warehouse food waste is 3.2%, produce that comes in from farms and doesn’t make it out in boxes because it’s bruised, spoiled, or rejected at packing. That’s much lower than the supermarket equivalent (which is typically 10-15% in-store and around 30% farm-to-consumer when you count what gets discarded on the way). The team is surprised by how good the number looks.
By Monday, the five numbers exist. They’re rough. They have enormous error bars. They would not pass a formal audit. But they’re honest, they’re documented, and they’re a starting point.
The language matters
Maya drafts a short document called Greenbox Sustainability Report. Baseline. It’s two pages. It lists the five metrics, the current values, the methodology used to compute each one, and the sources of uncertainty. It does not use the words “carbon neutral,” “net zero,” or “sustainable” without qualification, because Greenbox isn’t any of those things, and Maya doesn’t want to make claims the company can’t back up.
Lee reviews it before the investor meeting. He’s pleased with the methodology section but has one edit.
“Add a sentence at the top that says: ‘These are our first measurements. They will improve as we improve.’ That one sentence does two things. It tells the investor you take this seriously. And it tells future-you that you can publish the numbers without feeling like you’re promising perfection.”
Maya adds the sentence.
The meeting
On Tuesday, Maya and Diane meet with the lead investor for the Series B. Diane has warned Maya that the sustainability questions will come about forty minutes in, after the team has worked through the financials and the expansion plan.
Forty-two minutes in, the investor asks.
Maya opens the two-page document on her tablet and walks through the five numbers. She explains how each one is measured. She explains the sources of uncertainty. She notes where the numbers are probably too conservative and where they might be slightly optimistic. She says out loud that these are the first measurements and will improve over time.
The investor reads the document. Then she asks three questions.
“Who verified these?”
“Nobody yet. We’re doing this for the first time. The methodology is documented and we’re going to have a third party review it in Q2.”
“How often will you report?”
“Every six months internally. Every twelve months publicly, starting in December.”
“What will you do if the numbers get worse?”
Maya pauses. This is the test.
“We’ll explain why. We might get worse on a metric because we’re expanding into a region where farm partners aren’t local yet. Or because we had to switch to a different freight company during a supply disruption. If the number gets worse because we made a decision we stand behind, we’ll tell the truth about it. If it gets worse because we screwed up, we’ll tell the truth about that too. We’re not going to cherry-pick metrics that happen to look good or stop reporting ones that don’t.”
The investor writes something in her notebook.
“Good. I’ve read too many sustainability reports that only contain the numbers the company wanted to show. Yours is short enough that I can trust it, and the methodology is honest enough that I don’t feel like I need to re-do the work myself. Keep it this way. Don’t let your next head of marketing turn it into greenwashing.”
The document that nobody asked for
After the meeting, Maya does one more thing. She publishes the two-page document on the Greenbox website, in the “About” section, alongside the other company information. Not as a marketing piece. As a plain-language reference document that any subscriber can read.
It sits under a quiet header: How We’re Measuring Our Impact. No stock photos. No hero banner. Just the five numbers, the methodology, and the honest caveats.
Sam sends a link to the Greenbox email list on Thursday morning with a short note: “We said we’d be transparent, so here’s what we actually know about ourselves.”
The replies start arriving within the hour. Subscribers are not hostile. A few have technical questions about the methodology. A few ask how they can help reduce the numbers further. Two offer connections to academic researchers who’ve published on food supply chain emissions. One, a retired environmental engineer, offers to review the methodology for free.
Maya forwards that last email to Priya with a single line: “Take him up on it.”
The lesson
The sustainability report didn’t exist because the board asked for it. It existed because Maya started a business about eating well, and eating well is inseparable from how the food is grown, transported, and consumed. The measurements had to happen eventually. The board just made “eventually” into “next Tuesday.”
Maya writes in her notebook that evening:
“Sustainability reporting isn’t a marketing decision. It’s the company looking itself in the mirror. If you measure five things honestly and publish them consistently, you can show whether you’re getting better or worse. If you measure nothing and tell stories, you’re building your brand on something that can’t be verified, and that will eventually hurt you. Measure first. Tell the story second. And make the story true.”
She closes the notebook. Three metrics are already going to need revisions by the first annual report. That’s fine. The point was never to get the first report perfect. The point was to start.