Ella vs Coolset: Comparison and Coolset Alternatives (2026)
Ella and Coolset both handle ESG reporting and carbon, but Ella covers more of what UK and international teams are asked for and does more of the work. Ella is AI-native ESG software built as an agent: it chases colleagues for data, reads bills and drafts SECR, CDP, VSME, CSRD and EcoVadis outputs. Coolset focuses on EU supply chain compliance.
Last updated 28 October 2026 · By Tom Wilford, Founder, Ella
Get startedElla vs Coolset at a glance
| Ella | Coolset | |
|---|---|---|
| Built for | Sustainability teams at large and fast-growing companies | Mid-sized and growing companies in Europe, plus consultants |
| Getting started | Ella sets your boundaries from how you operate and builds your Scope 1 to 3 data checklist instantly, then walks you through each step | Customer success manager and a 4-week accelerator programme |
| How data gets in | Ella sends collect links to data owners, tracks who has not replied and chases them, reads dragged-in bills, receipts and spend exports, and pulls from integrations | Document upload with AI autofill, supplier invitations, activity inputs, public API |
| Who does the monthly work | Ella's AI agent: it collects, cleans, calculates and drafts. Your team reviews and approves | Your team, with a customer success manager and policy experts |
| Frameworks | GHG Protocol Scopes 1 to 3, SECR, CDP, carbon reduction and net zero plans, product carbon data, CSRD, VSME, EcoVadis, B Corp | GHG Protocol Scopes 1 to 3, CSRD, VSME, EU Taxonomy, EUDR, EUTR, PPWR, EcoVadis questionnaire autofill |
| Expert support | Included: Ella's sustainability team backs every customer | Included in every plan |
| Pricing and trial | Modular plans by module and company size, with a 14-day trial per module on your own data | Quote only |
Why teams choose Ella over Coolset
Where Coolset may fall short
| What to check | With Coolset | With Ella |
|---|---|---|
| UK requirements | SECR and PPN 006 not mentioned on its website | SECR summary and carbon reduction plans built in |
| CDP | Not mentioned on its website | CDP answers drafted from your carbon data |
| Chasing colleagues | Your team uploads documents and invites suppliers | Ella sends collect links, tracks gaps and chases |
| EcoVadis | Questionnaire autofill | Full module: reads your scorecard, finds gaps and drafts the fixes |
| Pricing | Quote only | Modular by company size, 14-day trial per module |
What Coolset does well
Should you choose Ella or Coolset?
| If you need | Choose |
|---|---|
| SECR, PPN 006 and CDP as well as VSME or CSRD | Ella |
| Data chased from colleagues without your team doing it | Ella |
| A full EcoVadis module, not just questionnaire autofill | Ella |
| A trial on your own data before procurement | Ella |
| EUDR, EUTR or packaging regulation compliance | Coolset |
Coolset alternatives worth a look
| Platform | Best for |
|---|---|
| Ella | Sustainability teams that want guidance and the data collection done for them |
| Greenly | Carbon programmes with an assigned expert |
| Sweep | Large European groups reporting under CSRD |
| Persefoni | Financial institutions and a free self-serve start |
How we wrote this comparison
How Ella helps
ESG reporting software
CSRD, VSME and customer ESG requests, with the data collected and cleaned for you.
Carbon accounting software
Scope 1, 2 and 3, SECR, CDP and reduction plans, built from your real bills and invoices.
ESG questionnaire automation
Answers to customer sustainability questionnaires and RFPs, drafted from your evidence.
Related resources
Best ESG Software in 2026: 11 Platforms Compared
The best ESG software depends on who is asking you for data. Workiva and Sweep suit enterprises filing CSRD or ISSB reports. Watershed and Persefoni suit carbon-heavy enterprises. Ella suits sustainability teams handling EcoVadis, CDP, SECR and customer requests: AI-native ESG software that collects, cleans and reports your data for you.
ESG data collection software: how to collect ESG data without chasing spreadsheets
ESG data collection software gathers the energy, emissions, workforce and governance data a sustainability report needs from the people and systems that hold it. Good tools request data from named owners, chase them, read invoices and bills, pull from integrations, and keep a source on every number so the final report is audit-ready.
SECR Reporting Explained: Who Must Report and What to Include
SECR (Streamlined Energy and Carbon Reporting) requires UK quoted companies, and large unquoted companies and LLPs, to report their energy use and greenhouse gas emissions in their annual report. A company is large if it meets two of three tests: turnover of £36m or more, balance sheet of £18m or more, or 250 or more employees. Scope 3 is optional.
Frequently Asked Questions
What is the difference between Ella and Coolset?
Coolset is a supply chain and ESG compliance platform for European companies. Ella is ESG software built as an AI agent that guides your team and does the collection, cleaning and drafting across carbon, SECR, CDP, CSRD, VSME and EcoVadis.
Is Ella a good Coolset alternative?
Yes. Ella is a strong Coolset alternative for UK and international companies that need SECR, CDP and EcoVadis alongside VSME or CSRD, and want the data collection done for them.
Which is easier to use, Ella or Coolset?
Ella is built to be the more guided option. It sets your boundaries, builds your data checklist, collects the data from colleagues and suppliers and drafts the outputs, so your team reviews rather than assembles. Coolset includes a customer success manager and an accelerator programme, but your team still uploads documents and invites suppliers.
How much does Coolset cost?
Coolset does not publish prices on its plans page. Plans are quoted, and expert support is included in every plan.
How much does Ella cost?
Ella is priced by module (Carbon, ESG reporting, EcoVadis, B Corp) and by company size, and every module has a 14-day trial so you can test it on your own data before procurement.
Does Coolset help with EcoVadis?
Coolset offers EcoVadis questionnaire autofill. Ella has a dedicated EcoVadis module that reads your scorecard, finds the gaps and drafts the evidence and policies to close them.
Can Ella collect ESG data from colleagues and suppliers?
Yes. Ella sends collect links and data requests, tracks missing responses and chases until people reply, accepts bills, receipts and spreadsheets in any format, and runs surveys for suppliers and colleagues. Every figure keeps a link to the document or reply it came from.
Can I switch from Coolset to Ella?
Yes. Export your existing activity data and reports, drop them into Ella and it maps them to your reporting periods. Most teams run both side by side for one reporting cycle to check the numbers match.