Plan A positions itself as the science-first choice for companies that want carbon accounting integrated with evidence-based decarbonisation planning rather than pure measurement.

Who it's for

Plan A targets companies that want measurement tightly coupled to a science-based reduction roadmap, particularly those prioritizing methodology rigor over rapid deployment.

The platform suits organizations committed to evidence-based decarbonisation rather than compliance-only reporting aligned with UK SRS. 2

Companies publicly listed on Plan A's website include BMW, KFC, Visa, Alphabet and FlixBus, indicating capability across automotive, food services, financial services, technology and transport sectors.

The platform works best for organizations where scientific rigor and reduction planning justify the investment in methodology depth.

Scope 1, 2 & 3 coverage

Plan A covers all three GHG Protocol 3 scopes.

The platform handles all 15 Scope 3 categories with emphasis on scientific accuracy and reduction potential rather than pure measurement efficiency.

For Scope 3, Plan A's scientific approach means the platform focuses on identifying reduction opportunities alongside measurement, helping companies understand not just their emissions but the science-based pathways to reduce them across the value chain.

CDP disclosure 5 can be driven from the platform.

UK frameworks support

The platform supports GHG Protocol 3, CSRD, and ISSB-aligned frameworks.

While the platform has EU/CSRD design heritage rather than UK-specific focus, the ISSB alignment means outputs should be compatible with UK SRS 2 requirements.

Plan A's European rather than UK-specific design means SECR 4 optimisation receives less focus than in UK-native platforms, though the scientific methodology provides confidence in data quality for any regulatory framework.

Assurance readiness

Plan A's documented GHG Protocol 3 methodology supports assurance readiness.

The scientific advisory board approach adds structure to the platform's methodology and governance.

For UK SRS S2 2 assurance requirements, the scientific approach aligns with assurance expectations for methodology validation.

The platform's emphasis on scientific rigor rather than rapid deployment supports comprehensive audit trail requirements.

Pricing

Plan A offers pricing on application, reflecting its positioning around scientific methodology and reduction planning rather than basic carbon accounting.

The scientific advisory board is central to the platform's positioning around methodology depth.

The science-led approach suits organizations prioritizing methodology validation and reduction planning over cost minimization, though may exceed budgets for companies seeking basic compliance measurement without decarbonisation strategy integration.

Alternatives to Plan A

For companies considering alternatives to Plan A, key options include:

Normative — Carbon accounting platform with less decarbonisation focus
Greenly — AI-assisted platform with broader accessibility
Climatise — UK-first platform for companies prioritising SECR and UK SRS

The choice often depends on whether scientific methodology and reduction-roadmap integration justify the investment versus alternatives focused on regulatory compliance or accessibility.

Companies comparing carbon reporting software should consider whether Plan A's science-led approach matches their decarbonisation ambitions.

Authority sources

Plan A Platform Overview

Plan A

UK Sustainability Reporting Standards (UK SRS)

Department for Business and Trade

GHG Protocol Corporate Accounting and Reporting Standard

World Resources Institute / GHG Protocol

Streamlined Energy and Carbon Reporting (SECR)

Department for Business and Trade

CDP Disclosure Platform

CDP Worldwide