Greenstone
by Greenstone (Cority) · ESG & Sustainability
ESG and sustainability data-management platform, now part of Cority's Sustainability Cloud.
Updated August 2026 · By the ERP Research Editorial Team · Independent and vendor-neutral.
- Deployment
- Cloud
- Company size
- Mid-market, Enterprise
- Pricing
- Quote-based
- Founded
- 2006
- Headquarters
- London, United Kingdom
Overview
Greenstone is a sustainability and ESG data-management and reporting platform originally founded in 2006 in London as a carbon-accounting software business. It was acquired by Cority, a Toronto-based environmental-health-and-safety (EHS) software provider majority-owned by Thoma Bravo, in May 2023, and its capabilities have since been folded into Cority's Sustainability Cloud, part of the unified CorityOne platform.
The platform is built around guided data-collection workflows, configurable questionnaires and a maintained library of emission factors and reporting frameworks, used to calculate Scope 1, 2 and 3 greenhouse-gas emissions and to produce disclosures aligned to frameworks including CDP, GRI, SASB and TCFD. Distinct modules historically covered corporate sustainability performance management, supply-chain/Scope 3 supplier engagement (formerly branded SupplierPortal), and ESG data collection across investment portfolios for private-equity and asset-management firms (formerly branded InvestorPortal).
At the time of the Cority acquisition, Greenstone had roughly 51 employees and served over 75 customers across 106 countries and 15 industries, with offices in London and New York. Customers are being migrated onto Cority's CorityOne platform, which combines Greenstone's ESG/sustainability data model with Cority's existing EHS software into a single system.
Screenshots & demo
Demo video from the vendor's YouTube channel. Screenshots sourced from Greenstone (Cority).
Modules & capabilities
Greenstone covers 15 of 59 capabilities we track in this category (+3 partial)
25%- Scope 1 & 2 GHG accountingCore strength
- Scope 3 value-chain accountingCore strength
- Emission factor libraryCore strength
- GHG Protocol-aligned methodologyNot evidenced
- Activity-based and spend-based calculationActivity/consumption-based; no spend-based method documentedPartial
- Multi-entity / multi-geography consolidationBy site, fuel, utility, plus fund/portfolio-company rollupSupported
- Calculation audit trailNot evidenced
- Financed / portfolio emissionsNot evidenced
- Water, waste & energy trackingBreakdown by energy, transport, waste, water, supply chainCore strength
“Not evidenced” means our research found no public documentation of this capability — the vendor may still offer it. Confirm on a demo.
Common use cases
- Calculating and reporting Scope 1, 2 and 3 emissions across multi-site operations
- Producing CDP, GRI, SASB or TCFD-aligned disclosures from a single data set
- Running supplier ESG and Scope 3 questionnaires across a supply chain
- Collecting and scoring ESG data from portfolio companies for private-equity or asset-management ESG reporting
- Tracking data-coverage gaps ahead of an annual sustainability report
- Consolidating sustainability data alongside EHS data on Cority's unified CorityOne platform
Strengths & considerations
Strengths
- Combines emissions and ESG data collection with a maintained multi-framework question library covering CDP, GRI, SASB and TCFD
- Distinct investor- and supply-chain-focused ESG modules, formerly branded InvestorPortal and SupplierPortal, alongside corporate sustainability reporting
- Now backed by Cority's EHS platform and the CorityOne data model, combining sustainability and EHS data in one system
- Guided wizards designed to lower the data-collection burden on portfolio companies and suppliers with limited ESG resources
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Full Greenstone pricing breakdown — cost at 25/100/500 seats, competitor rates & FAQs
Pricing is not published; sold as an enterprise SaaS subscription as part of Cority's Sustainability Cloud / CorityOne platform. Get an independent shortlist with pricing guidance below.
What does Greenstone cost?
Greenstone prices by quote, like most of this category. Here is what actually drives your number — and what to ask before you get one.
8 of the 15 vendors we track in this category publish no list price at all.
Technical & security
- Hosting
- SaaS (multi-tenant, CorityOne platform)
- Languages
- English
About the vendor
- Founded
- 2006
- Headquarters
- London, United Kingdom
- Ownership
- Acquired by Cority (majority-owned by Thoma Bravo) in May 2023
Alternatives to Greenstone in ESG & Sustainability
Greenstone — frequently asked questions
Is Greenstone still a standalone product?
No. Cority acquired Greenstone in May 2023, and its sustainability and ESG data-collection capabilities have been folded into Cority's Sustainability Cloud, part of the unified CorityOne platform, alongside Cority's existing EHS software.
What emissions scopes does the platform cover?
The platform calculates Scope 1, 2 and 3 greenhouse gas emissions using a maintained library of emission factors, with consumption data tracked by site, fuel type and utility.
Which ESG reporting frameworks are supported?
Disclosure generation is aligned to frameworks including CDP, GRI, SASB and TCFD, with question libraries mapped across multiple standards to avoid duplicate data collection.
Who used Greenstone before the Cority acquisition?
At the time of the May 2023 acquisition, Greenstone had around 51 employees and served over 75 customers across 106 countries and 15 industries, from offices in London and New York, including corporates, suppliers and private-equity/asset-management firms via its InvestorPortal and SupplierPortal modules.
Does the platform support supply-chain and investor ESG data collection, not just a company's own operations?
Yes. Modules formerly branded SupplierPortal and InvestorPortal cover Scope 3 supplier questionnaires and ESG data collection across investment portfolios, respectively, in addition to corporate sustainability reporting.
Compare Greenstone head-to-head
The ESG & Sustainability Buyer's Guide
Before you commit to Greenstone, see how it sits against the 15 ESG & sustainability systems we track — on capability, ERP integration depth and what each one actually charges for.
ESG & Sustainability Buyer's Guide
15 systems compared · 2026
ERP Research
- Greenstone compared side-by-side with 14 alternatives
- ERP integration checklist — what to verify before you shortlist
- The pricing questions that change the quote
- A Greenstone evaluation brief, included with the guide
ESG & Sustainability Buyer's Guide
Get pricing for Greenstone
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