Plan A alternative: ledger-first carbon accounting for US companies

Last updated July 2026. Plan A is a real and capable product, and this page is honest about where it wins as well as where it does not fit. Both tools do genuine Scope 1, 2 and 3 carbon accounting to the GHG Protocol. The difference is what each is built around. Plan A leans on a certified measurement methodology, corporate and product carbon footprints, scenario modeling and a strong decarbonization-roadmap workflow, and it is aimed at European and global enterprises that want the software and the reduction strategy in one place. We are ledger-first and US-regulation-first: the inventory is built from your accounts payable and utility exports, and the design center is the line-level evidence trail an assurance review samples against. If your reason for buying is a California deadline rather than a net-zero program, that starting point matters.

If your goal is a decarbonization program, not just a disclosure number, Plan A is a strong pick. It is built for companies that want to measure the footprint, model reduction scenarios, set a science-based target, and track progress against it year over year, all in one platform with a certified methodology behind the figures. Enterprises that also need product carbon footprints for specific goods, or that value an established European vendor with a track record among large brands, are exactly who Plan A serves well. We are not going to pretend self-serve software replaces a full measure-and-reduce platform for a company that wants the whole program in one tool.

The fit flips when your trigger is American and your data lives in your ledger. If you are a US company over $1 billion in revenue facing the SB 253 deadline, or a supplier answering a customer's emissions questionnaire, the fastest path to a defensible number is to classify the AP export you already have rather than stand up an organization-wide data-collection and target-setting project first. That is what our carbon accounting software does: it drafts the scope and category for every ledger line with a confidence level, a person reviews the low-confidence tail, and every figure keeps a link to the invoice behind it. You can watch that happen on your own data in the demo above, before any email address changes hands.

Plan A does not publish a standard price list; the cost depends on company size, how many entities and sites are in scope, whether you need product footprints, and how much reduction-planning support you want, so the number comes from a sales conversation. Anyone printing an exact Plan A price is guessing at a figure that varies by deal. We take the opposite approach on transparency: our planned pricing is published on the pricing page, and nothing is charged during early access. Compare the wider field on best carbon accounting software, or see the enterprise-platform comparison on the Normative alternative page.