# Best Carbon Accounting Software - Page 4

## How Many Carbon Accounting Software Products Does G2 Track?

**Total Products under this Category:** 135

### Category Stats (Jul 2026)

- **Average Rating:** 4.64/5 The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** Ecologi (+4.06%) - Among all products in this category, Ecologi recorded the largest rating increase compared to last month

_Last updated: July 26, 2026_

## How Does G2 Rank Carbon Accounting Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 3,100+ Authentic Reviews
- 135+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

## G2 Grid® for Carbon Accounting Software
 ![G2 Grid® for Carbon Accounting Software plotting products by satisfaction and market presence](https://www.g2.com/categories/carbon-accounting/grids.png?focus%5B%5D=1301114&focus%5B%5D=1323049&focus%5B%5D=20026&focus%5B%5D=1868342&focus%5B%5D=143528&focus%5B%5D=169047&focus%5B%5D=1240642&focus%5B%5D=1318221)

Highlighted products: osapiens, Watershed, Workiva, Orki, Greenly, Trace, carbmee EIS, and Google Carbon Footprint.

Underlying data: [Grid® JSON](https://www.g2.com/categories/carbon-accounting/grids.json?focus%5B%5D=osapiens&focus%5B%5D=watershed&focus%5B%5D=workiva-workiva&focus%5B%5D=orki&focus%5B%5D=greenly&focus%5B%5D=trace-2025-03-07&focus%5B%5D=carbmee-eis&focus%5B%5D=google-carbon-footprint)

**Sponsored**

### Watershed

Watershed is the enterprise sustainability AI platform. Companies like Airbnb, Carlyle Group, FedEx, Visa, and Dr. Martens use Watershed to measure, report, and act on their emissions—producing audit-ready carbon footprints that drive real decarbonization. Purpose-built AI agents accelerate every step, from data cleaning and emissions factor mapping to report drafting, while embedded climate intelligence and human review ensure results you can stand behind. Named a leader in the Verdantix 2026 Green Quadrant and a CDP-accredited gold solutions provider, Watershed now manages more than 3 gigatonnes of CO2e emissions through our customers. Key features: - Measurement: More than 60 pre-built integrations and a library of 500,000+ emissions factors, benchmarks, and methodologies deliver granular, audit-ready carbon footprints across your entire business—down to individual products and suppliers. - Reporting: Prepare and file sustainability disclosures across global frameworks, including ISSB, CDP, CSRD, TCFD, California SB253/261, and more. AI agents draft reports in the right format using your data, with full data lineage, peer benchmarks, review workflows, and change tracking. - Sustainability AI: Purpose-built AI agents automate data cleaning, formatting, and analysis—getting teams to actionable data up to 80% faster. Watershed Product Footprints uses AI to decompose purchased goods into their underlying materials and processes, so procurement and sustainability teams can compare suppliers, run what-if scenarios, and surface real reduction levers. All AI is built with encoded sustainability intelligence, multi-agent safeguards for accuracy, full transparency into how results are calculated, and human control at every step. - Decarbonization: Develop a sustainability plan, model SBT-aligned targets, and track progress against them. Identify the highest-impact reduction levers across your operations and supply chain. Switch to clean power through virtual power purchase agreements, and access a marketplace of scientifically vetted, high-quality carbon removal and avoidance projects. - Security and compliance: Enterprise-grade API, data governance, user access controls, and SOC 1 and SOC 2 compliance on a cloud-based platform. What Watershed solves: For most companies, the majority of emissions sit in their supply chains—and until recently, that data was either too slow or too imprecise to act on. Watershed gives sustainability and procurement teams a single platform to measure with precision, meet evolving disclosure requirements, and build a credible decarbonization plan. Sustainability AI built on climate science surfaces reduction opportunities that traditional approaches miss, while connecting sustainability data to real business decisions like procurement, energy sourcing, and supplier engagement.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1008103&secure%5Bchosen_at%5D=2026-07-28T10%3A36%3A15Z&secure%5Bdisplayable_resource_id%5D=1008103&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1008103&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1323049&secure%5Bresource_id%5D=1008103&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fcarbon-accounting%3Fpage%3D4&secure%5Btoken%5D=226d985938fa09bb4057c04be3ea5011dca88fff112c2e0289a8d98394548228&secure%5Burl%5D=https%3A%2F%2Fwatershed.com%2Fdemo%2Fwhy-watershed%3Futm_source%3Dg2%26utm_medium%3Dcpc&secure%5Burl_type%5D=custom_url)

[
RETScreen
](https://www.g2.com/products/retscreen/reviews)

By [Natural Resources Canada](https://www.g2.com/sellers/natural-resources-canada)

[

4.7/5(13)

](https://www.g2.com/products/retscreen/reviews)

What do users say?

Users consistently praise the software for its user-friendly interface and detailed information on energy management simulations. Many find it helpful for learning and appreciate the graphical represe

[
Sage Earth
](https://www.g2.com/products/sage-earth/reviews)

By [Sage Software](https://www.g2.com/sellers/sage-software-d61a780c-4fb3-4781-9519-baa772f5ea91)

[

4/5(1)

](https://www.g2.com/products/sage-earth/reviews)

Product Description

Reach net zero with carbon accounting software Sage Earth uses accounting data to build your business’s carbon footprint, helping you reach net zero emissions in your operations and supply chain.

Pros and Cons

[
Ease of Use (1)
](https://www.g2.com/products/sage-earth/reviews?qs=pros-and-cons)

[
Sustainability and Carbon...
](https://www.g2.com/products/sustainability-and-carbon-management-platform/reviews)

By [eCloudvalley](https://www.g2.com/sellers/ecloudvalley)

[

4/5(1)

](https://www.g2.com/products/sustainability-and-carbon-management-platform/reviews)

Product Description

Sustainability and Carbon Management Platform Helps Companies Accelerate Net Zer

[
Traace
](https://www.g2.com/products/traace/reviews)

By [Traace](https://www.g2.com/sellers/traace)

[

5/5(1)

](https://www.g2.com/products/traace/reviews)

Product Description

Traace is an all-in-one Carbon Management SaaS that allows companies to meet their GHG reduction trajectory by deploying efficient decarbonisation programs. Through carbon accounting, value chain anal

[
VelocityEHS | EHS Software...
](https://www.g2.com/products/velocityehs-ehs-software-to-outpace-risk/reviews)

By [VelocityEHS](https://www.g2.com/sellers/velocityehs)

[

4.4/5(172)

](https://www.g2.com/products/velocityehs-ehs-software-to-outpace-risk/reviews)

What do users say?

Users consistently praise the software for its ease of use and intuitive interface, which simplifies tasks like managing safety data sheets and conducting assessments. Many appreciate how it streamlin

Pros and Cons

[
Ease of Use (77)
](https://www.g2.com/products/velocityehs-ehs-software-to-outpace-risk/reviews?qs=pros-and-cons)[
Confusing Interface (13)
](https://www.g2.com/products/velocityehs-ehs-software-to-outpace-risk/reviews?qs=pros-and-cons)

[
Aclymate
](https://www.g2.com/products/aclymate/reviews)

By [Aclymate](https://www.g2.com/sellers/aclymate)

[

0/5(0)

](https://www.g2.com/products/aclymate/reviews)

Product Description

A one-stop climate shop, with self-service carbon accounting and offset marketplace, Climate Bookkeepers to handle it all for you, and Climate Consultants to assist with standards such as SBTi and oth

[
ASUENE LCA
](https://www.g2.com/products/asuene-lca/reviews)

By [ASUENE](https://www.g2.com/sellers/asuene)

[

0/5(0)

](https://www.g2.com/products/asuene-lca/reviews)

Product Description

ASUENE LCA is an LCA/CFP calculation service jointly developed by ASUENE Inc. and SuMPO. A variety of functions are available to enable even beginners to perform highly reliable calculations easily an

[
Biocode
](https://www.g2.com/products/biocode/reviews)

By [Biocode Oy](https://www.g2.com/sellers/biocode-oy)

[

0/5(0)

](https://www.g2.com/products/biocode/reviews)

Product Description

Biocode is a common-sense carbon footprinting tool for food brands. Anyone can use it without previous experience, and it supports reporting, marketing and climate action – from farm to shelf. ​

[
Brightly Stream
](https://www.g2.com/products/brightly-stream/reviews)

By [Siemens Digital Industries Software](https://www.g2.com/sellers/siemens-digital-industries-software)

[

0/5(0)

](https://www.g2.com/products/brightly-stream/reviews)

Product Description

Take control of your utility and ESG data to drive results against carbon reduction and sustainability goals across individual properties and your entire portfolio.

[
CACPS
](https://www.g2.com/products/cacps/reviews)

By [State and Territorial Air Pollution Program Administrators](https://www.g2.com/sellers/state-and-territorial-air-pollution-program-administrators)

[

0/5(0)

](https://www.g2.com/products/cacps/reviews)

Product Description

CACPS is a Window-based, user-friendly software tool that will significantly expand the capabilities of states and localities to analyze the benefits of various air pollution control scenarios and sel

[
Capture
](https://www.g2.com/products/capture-club-capture/reviews)

By [Capture Club](https://www.g2.com/sellers/capture-club)

[

0/5(0)

](https://www.g2.com/products/capture-club-capture/reviews)

Product Description

The Capture app makes it easy to track, reduce and remove CO2 emissions from everyday life.

[
Carbalytics
](https://www.g2.com/products/carbalytics/reviews)

By [Carbalytics](https://www.g2.com/sellers/carbalytics)

[

0/5(0)

](https://www.g2.com/products/carbalytics/reviews)

Product Description

Carbalytics is a decision-support tool for marketing and acquisition teams. It enables media planners and digital marketing directors to pilot their advertising investments across all major digital ch

[
Carboledger
](https://www.g2.com/products/carboledger/reviews)

By [Carboledger, Inc.](https://www.g2.com/sellers/carboledger-inc)

[

0/5(0)

](https://www.g2.com/products/carboledger/reviews)

Product Description

Carboledger is an enterprise platform that simplifies carbon transparency across the value chain. We empower sustainability leaders to leverage product sustainability for business growth. Carboledger

[
Carbon.AI
](https://www.g2.com/products/carbon-ai/reviews)

By [VASPP](https://www.g2.com/sellers/vaspp-a36c759a-6081-4f90-a94d-5b8d4d1775e0)

[

4.2/5(3)

](https://www.g2.com/products/carbon-ai/reviews)

Product Description

Carbon AI Dashboard gives visibility into carbon emissions across the whole value chain, including manufacturing, raw materials, energy use, and transportation. Helps slicing and dicing between plants

[
Carbon+Alt+Delete
](https://www.g2.com/products/carbon-alt-delete/reviews)

By [Carbon+Alt+Delete](https://www.g2.com/sellers/carbon-alt-delete)

[

0/5(0)

](https://www.g2.com/products/carbon-alt-delete/reviews)

Product Description

Carbon+Alt+Delete is the go-to SaaS platform for sustainability experts to calculate and reduce the carbon footprint of companies.

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[Browse Carbon Accounting Themes](/categories/carbon-accounting/themes)

 ![Lauren Worth](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Lauren Worth")
LW

Researched and written by [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)

Updated October 3, 2024

Carbon accounting software helps companies track carbon emissions and implement programs to reduce them through decarbonization. Businesses use this software to improve their environmental protection initiatives and demonstrate their efficiency to interested parties like investors, partners, government agencies, NGOs, and the public.

This type of software is used mainly by industries that produce high emissions, such as manufacturing, oil and gas, mining, transportation, and utilities. Carbon accounting software can also be used by IT companies since hardware, such as servers, produce CO2 emissions. While carbon accounting features may be found in [sustainability management software](https://www.g2.com/categories/sustainability-management) and [environmental, social, and governance (ESG) reporting software](https://www.g2.com/categories/environmental-social-and-governance-esg-reporting), many vendors provide standalone software that offer advanced features such as decarbonization.

To qualify for inclusion in the Carbon Accounting category, a product must:

- Provide features for monitoring carbon emissions from multiple sources
- Create emissions reports that are compliant with carbon regulations
- Allow users to create and analyze emissions scenarios and forecasts
- Deliver decarbonization plans to help companies reduce carbon emissions
- Provide access to marketplaces to buy and sell carbon credits
- Include metrics and analytics specific to carbon accounting

Show More