Greenstone vs Plan A
ESG & sustainability head-to-head for ERP teams: evidenced capabilities, published pricing, and which ERPs each actually integrates with.
| Starting price | Quote-based | Annual subscription, quote-based |
| Deployment | Cloud | Cloud |
| Company size | Mid-market, Enterprise | SMB, Mid-market, Enterprise |
| Stated ERP integrations | None listed | None listed |
| Vendor | Greenstone (Cority) | Plan A |
Our take
Where Greenstone leads
- Stronger evidenced coverage on 12 of the 29 capabilities where they differ (led by emission factor library and water, waste & energy tracking).
Where Plan A leads
- Stronger evidenced coverage on 17 of the 29 capabilities where they differ (led by csrd/esrs reporting and decarbonization action plans).
Where they differ
The 29 capabilities (of 59 in the ESG & sustainability taxonomy) where the evidence separates them, biggest gaps first. “Not evidenced” means our research found no public documentation of this capability — the vendor may still offer it. Confirm on a demo.
| Capability | ||
|---|---|---|
| Emission factor libraryCarbon & GHG Accounting | Core strength | Not evidenced |
| Water, waste & energy trackingCarbon & GHG Accounting | Core strength Breakdown by energy, transport, waste, water, supply chain | Not evidenced |
| CSRD/ESRS reportingRegulatory Disclosure & Reporting | Not evidenced | Core strength Dedicated CSRD reporting module |
| GRI/SASB-aligned reportingRegulatory Disclosure & Reporting | Core strength | Not evidenced |
| CDP questionnaire supportRegulatory Disclosure & Reporting | Core strength | Not evidenced |
| Decarbonization action plansDecarbonization & Target Management | Not evidenced | Core strength Modular decarbonisation action planning |
| Target progress tracking dashboardsDecarbonization & Target Management | Not evidenced | Core strength Reduction progress tracking over time |
| API-based data integrationData Collection & Integration | Not evidenced | Core strength API-based data transfer between Plan A and other systems |
| Conversational AI assistantAI & Automation | Not evidenced | Core strength Gaia AI generative assistant for sustainability questions |
| GHG Protocol-aligned methodologyCarbon & GHG Accounting | Not evidenced | Supported Certified / scientifically verified methodology |
| Activity-based and spend-based calculationCarbon & GHG Accounting | Partial Activity/consumption-based; no spend-based method documented | Core strength Activity-based, spend-based and average-data methods |
| TCFD/ISSB-aligned reportingRegulatory Disclosure & Reporting | Supported | Not evidenced |
| US climate disclosure (SEC / SB 253 / SB 261)Regulatory Disclosure & Reporting | Not evidenced | Supported Guidance on US SEC climate rules, UK SDR |
| EU Taxonomy alignment reportingRegulatory Disclosure & Reporting | Not evidenced | Supported Guidance-level EU Taxonomy coverage |
| Collect-once, report-to-manyRegulatory Disclosure & Reporting | Supported Framework question libraries mapped across standards | Not evidenced |
| SBTi target setting & validationDecarbonization & Target Management | Not evidenced | Supported Science-aligned emissions reduction target setting |
| Automated data ingestionData Collection & Integration | Not evidenced | Supported Automated data aggregation workflows |
| Utility bill / meter data processingData Collection & Integration | Supported Consumption/activity tracking by site, fuel type and utility | Not evidenced |
| Automated data quality checksData Collection & Integration | Supported Data-coverage tracking flags gaps in reporting periods | Not evidenced |
| AI regulatory guidanceAI & Automation | Not evidenced | Supported Gaia AI assistant for sustainability questions |
| Role-based access & approval workflowsPlatform & Enterprise Governance | Supported Role-based navigation across CorityOne modules | Not evidenced |
| Open API / extensibilityPlatform & Enterprise Governance | Not evidenced | Supported |
| Multi-entity / multi-geography consolidationCarbon & GHG Accounting | Supported By site, fuel, utility, plus fund/portfolio-company rollup | Core strength Multi-entity / subsidiary structuring |
| Supplier data-request campaignsSupplier & Value Chain Engagement | Core strength Supplier ESG questionnaire distribution and tracking | Supported Enterprise tier includes 500 suppliers |
| Supplier ESG/emissions scorecardingSupplier & Value Chain Engagement | Partial Scoring focused on investor portfolio companies, not suppliers | Not evidenced |
| Self-serve supplier portalSupplier & Value Chain Engagement | Partial Guided data-collection wizards for suppliers/portfolio companies | Not evidenced |
| CBAM import-emissions reportingSupplier & Value Chain Engagement | Not evidenced | Partial Named among frameworks with guidance coverage, not a confirmed module |
| Reduction scenario / what-if modellingDecarbonization & Target Management | Not evidenced | Partial Emissions/cost forecasting; explicit scenario tool not detailed |
| CapEx/OpEx budget integrationDecarbonization & Target Management | Not evidenced | Partial Emissions and cost forecasting; not explicit CapEx/OpEx tool |
Both grade identically on the other 30 capabilities — see each product's full profile: Greenstone, Plan A.
Greenstone vs Plan A — FAQs
Is Greenstone or Plan A better for ERP integration?
They state different ERP coverage: Greenstone lists no ERP integrations publicly; Plan A lists no ERP integrations publicly.
Which is cheaper, Greenstone or Plan A?
Neither publishes a list price — both quote. Ask each for the all-in first-year cost at your seat count, as one number, and compare those.
Get pricing for both
Tell us your ERP, seat count and must-haves and we'll come back with an independent view of what Greenstone and Plan A should each cost you — and whether a third option belongs on your shortlist.