Watershed Alternatives & Competitors for UK SMEs

Watershed is one of the best-known names in carbon accounting. Its platform is used by large companies such as Airbnb, Spotify, Klarna and Canva, and it is built for climate programmes that run across many countries, business units and suppliers.

That focus suits big enterprises with in-house sustainability teams. Smaller and mid-sized businesses usually need something different: a credible footprint in weeks, a clear price, and someone to call when a customer sends a supplier questionnaire. This guide is for those companies.

Is Watershed right for a smaller company? Watershed is built for large enterprises, and its customer list reflects that. Pricing isn't published; quotes vary. A smaller company can use it, but may pay for depth it doesn't need. If you need a first footprint, SECR figures or answers for customer requests, a mid-market platform with expert support is often a better fit.

What Watershed does

Watershed is a climate platform organised around three jobs: measure, report and act.

• Measurement of carbon emissions, plus water and land use, drawing on a large emission factor library with calculations you can trace.
• Reporting with pre-filled data, AI-assisted drafting and review workflows. Watershed names CSRD and California's SB 253 and SB 261 among the regulations it supports.
• Product footprints, using AI to break products down into materials and manufacturing steps.
• Reduction and procurement, including decarbonisation planning and access to vetted clean power projects.
• Expertise from in-house climate specialists, with consultancies such as Deloitte offering implementation support.

Watershed doesn't publish pricing; quotes vary by scope and company size. Its sales process starts with a demo request.

Why smaller companies look for a Watershed alternative

This is a question of fit rather than quality. Companies with a few hundred staff usually come to carbon accounting for one of these reasons:

• A customer has asked for your emissions. Supplier requests from larger customers are often the first trigger, and you need a defensible number quickly.
• You need to report under SECR. Quoted companies and large UK companies and LLPs must include energy and carbon data in their annual reports.
• You are working towards B Corp. Certification asks for credible climate action, starting with a measured footprint.
• You sell physical products. Retailers and distributors increasingly ask for product carbon footprints or EPDs.
• You have no sustainability team. The work often lands on someone in operations or finance, who needs hands-on help rather than a large software rollout.

In those situations, speed, a predictable cost and access to an expert usually matter more than enterprise-grade breadth.

What to look for in a Watershed alternative

• Scope 1, 2 and 3 coverage aligned with the GHG Protocol, so the footprint holds up when a customer or auditor checks it.
• Expert support and which plan includes it: methodology review, data handling or a dedicated person, not only a help centre.
• UK reporting outputs for SECR, CDP, B Corp and customer questionnaires.
• Product footprints if you sell physical goods.
• Clear pricing, or at least a quick written quote.
• A realistic onboarding timeline based on customers of your size.

Watershed alternatives compared

The best Watershed alternatives for smaller companies

Zevero

Zevero is a carbon accounting platform that pairs software with in-house sustainability experts. Expert involvement rises with each plan: on Essential an expert reviews your methodology at setup and key milestones, on Leading the expert stays close to your data, and on Premium the expert co-owns your data and builds your net zero strategy.

Best for: growing companies and multi-division groups, particularly in food and drink, manufacturing and consumer goods, that want one partner for software, product-level data and expert advice as they scale in the UK and abroad.

• Built to scale: start with Scope 1 and 2, add Scope 3, more sites and new entities as you grow, and report by site, brand or business division with group roll-ups
• Scope 1, 2 and 3 footprints aligned with the GHG Protocol and ISO 14064
• ISO 27001-certified information security, with policies and controls set out in our Trust Centre
• More than software: product carbon footprints from £500 per product, EPDs from £10,000 per product, ESG reporting, B Corp support and decarbonisation strategy consultancy from the same team
• A global team in London, Singapore and Tokyo, working with organisations in more than 20 countries
• Reporting for SECR, CDP, B Corp and customer supplier requests, with setup and onboarding included in the subscription

Pricing: Zevero Lite covers Scope 1 and 2 from £1,500 a year. Essential, Leading and Premium plans are quoted. See all plans.

Things to know: Zevero is rated 4.7 on G2 and received G2's Best Estimated ROI and High Performer badges in Fall 2026. Main plans need a short call for a price, and all plans have a one-year minimum term. Teams that only want self-serve software may not use the full service.

Seedling

Seedling is a carbon management platform that pairs its software with carbon specialists who review data, check assumptions and help build a decarbonisation plan.

Best for: businesses with up to 2,000 employees, especially lean teams where carbon sits alongside another job.

Strengths: Seedling lists support for SECR, CDP, ISO 14064 verification, PPN 006 Carbon Reduction Plans, B Corp climate action and product carbon footprints. A free Starter tier lets small teams begin without a contract.

Things to know: paid tiers are quoted. Seedling says it isn't the right fit for bespoke API integrations or fully outsourced ESG.

Greenly

Greenly is a French carbon accounting platform that says it serves around 4,000 clients, from SMBs to enterprises. It combines automated carbon accounting with AI agents (EcoPilot), life cycle assessment and supplier engagement.

Best for: organisations that want a broad, automated suite with a long list of supported frameworks, including UK SRS, SECR, CSRD, SBTi and EcoVadis.

Things to know: Greenly doesn't publish prices on its site. In September 2026 it announced it is joining forces with Normative, in a deal reported as an acquisition, so ask how the combination affects plans and contracts. For more detail, read our guide to Greenly alternatives.

Persefoni

Persefoni offers a free tier, Persefoni Pro, for a single user at companies with low to medium complexity. It covers a Scope 1 to 3 footprint, including all 15 Scope 3 categories.

Best for: companies with someone who has time to do the work themselves and wants to start without a budget.

Things to know: the free tier is self-serve. Concierge support and the SECR report are paid add-ons, and the Advanced tier, built for enterprise-scale programmes, is quoted.

Plan A

Plan A is a European carbon accounting and decarbonisation platform. Its methodology is GHG Protocol compliant and TÜV Rheinland certified, and it draws on in-house scientists and a Scientific Advisory Board.

Best for: European companies that value certified methodology and broad EU regulatory coverage, including CSRD and CBAM.

Things to know: pricing isn't published; quotes vary. Diginex agreed to acquire Plan A in early 2026, so ask how the product and service model may change.

Planet Mark

Planet Mark is a UK sustainability certification business offering independently validated, people-supported carbon measurement and reduction. Members can work towards annual certification and net zero certification.

Best for: UK businesses that want a recognised certification to show in tenders and to customers.

Things to know: it is a certification-led membership more than a software-first platform. Pricing isn't published, and a free carbon clinic is the usual starting point.

How to choose: a quick checklist

• Why do you need a footprint now? A customer request, SECR, B Corp and a public tender each need different outputs. Start there.
• Who will do the work? If no one has the time, check which plan includes expert review or a dedicated person, not only whether experts exist.
• Do you sell products? Check whether product footprints and EPDs are in scope, and what they cost.
• What will it cost in years one and two? Ask for a written quote that includes onboarding, add-ons and minimum terms.
• How long until you have numbers? Ask for timelines from customers of a similar size.
• Will the platform grow with you? Check you can add Scope 3, targets and reduction planning later without switching again.

For a wider view of the market, see our comparison of the best carbon accounting software.

Finding the right fit

Watershed is a strong choice for large enterprises with climate teams and complex supply chains. Most smaller and mid-sized companies need something simpler: an accurate footprint, reports their customers and regulators accept, and an expert to ask when something is unclear.

Zevero offers enterprise-grade foundations, including ISO 14064-aligned methodology, ISO 27001-certified security, division-level reporting and a global team across the UK and Asia-Pacific, with the speed, published entry price and hands-on expert support that smaller and mid-sized companies need. It scales with you rather than being sized for a global enterprise from day one.

If that sounds like your business, book a demo to see how Zevero's software and in-house experts work with your data, or check our pricing first.