Plans and prices

On Managed and Enterprise, a Hemera carbon accountant owns your engagement end to end: boundary decisions, supplier engagement, data checks, methodology calls, and preparing and releasing the report. While the founding group is small, a Hemera carbon accountant also looks at every workspace, whatever the plan: help getting set up, and Hemera checking its own classifications. That is how we run the founding period, not a standing feature of every plan. Enterprise customers get a priority pool and a named account manager on top.

On Managed, we do the analysis for you. On Engine, you (a consultancy) get the platform and benchmarking dataset to do the analysis for your own clients. Engine clients get software-development priority: the platform evolves with their feedback.

On Managed and Enterprise, a Hemera carbon accountant prepares your methodology report and Hemera staff release it. The methodology behind it is release v1.0-provisional, 34 modules, not yet signed by an external reviewer. Neither is a review of your figures, which remain yours to sign off.

Suppliers answer one simple link. No account, no portal to learn. They give their answer and see it sharpen the estimate. You see which requests matter most before you send them.

You see how you compare with businesses like yours, measured the same way. Cohorts are chosen by a Hemera carbon accountant, never fewer than five organisations, and only aggregates are shared.

Yes. The item library gives product-level footprints for the goods you make, buy, and sell, at small-business prices, on the same method and with the same honest ranges as the rest of your account.

Yes, upgrade at any time and we'll prorate the difference. Downgrades take effect at the next billing period. Annual plans can be cancelled at renewal.

Every figure on every report traces back to a versioned emission factor, a hash-chained audit event, and the calculation rule that produced it. The ledger is exportable as CSV or JSON, and the audit pack includes a stdlib-only Python verifier that anyone, your auditor included, can run offline.

We offer a live demo workspace at /demo, and founding organisations pay nothing for their first six months. Paid fees are non-refundable once the term has started, except where you terminate for our uncured material breach, in which case we refund pro-rata for the unused part of the term. Managed and Enterprise include a paid onboarding period before the annual term begins.

Your workspace data sits in a managed PostgreSQL database run by Neon in the US (Virginia), and our backend, which also holds uploaded evidence files, runs on Render in Virginia. US hosting means international transfer considerations under UK GDPR, and the safeguards are set out in our privacy policy. We never sell your data or use it to train models, and the companies that process it for us are listed on our sub-processor page. Full details on our security page and in the DPA.