Company lists · Data refreshed August 2026

Top 25 City carbon accounting software providers based in the United States

Name: City carbon accounting software providers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 157 companies tracked

RevenueBase identified 157 city carbon accounting software providers headquartered in the United States as of August 2026 and tracks 2,313 professional contacts across them, including 876 with verified work emails and 853 with mobile numbers. San Francisco is the largest hub.

This list covers city carbon accounting software providers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 31, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

157Companies

2,313Contacts tracked

876Verified emails

853Mobile numbers

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The 25 largest city carbon accounting software providers based in the United States

Ranked by team size

Top 25 of 157 city carbon accounting software providers based in the United States, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to city carbon accounting software providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Watershed	Indirect evidence	San Francisco, CA, United States	201-500	537 contacts →
	Indirect evidence “Watershed is the enterprise sustainability platform.” Source: RevenueBase Database · checked Aug 31, 2026
2	Carbon Direct	Partial evidence	New York City, United States	51-200	171 contacts →
	Partial evidence “Carbon Direct is a trusted energy and climate solutions company that combines world-class scientific expertise, technical rigor, and market insights to help clients achieve their…” Source: RevenueBase Database · checked Aug 31, 2026
3	Touchstone IQ	Partial evidence	Denver, CO, United States	51-200	136 contacts →
	Partial evidence “Touchstone IQ is a leading-edge building energy management software & services company.” Source: RevenueBase Database · checked Aug 31, 2026
4	Pulsora	Indirect evidence	San Mateo, CA, United States	51-200	101 contacts →
	Indirect evidence “Pulsora is a sustainability management platform that helps businesses simplify and consolidate complex ESG operations, processes, and data in one centralized hub.” Source: RevenueBase Database · checked Aug 31, 2026
5	Locus Technologies	Partial evidence	Mountain View, CA, United States	51-200	94 contacts →
	Partial evidence “Locus Technologies is the only scientist-driven software company at the nexus of analytical and field data management, Environmental, Health, and Safety (EHS) compliance, and…” Source: RevenueBase Database · checked Aug 31, 2026
6	Dilax Intelcom	Indirect evidence	Chicago, IL, United States	51-200	82 contacts →
	Indirect evidence “We live and work in Berlin.” Source: RevenueBase Database · checked Aug 31, 2026
7	Gravity	Partial evidence	New York, NY, United States	51-200	58 contacts →
	Partial evidence “Gravity is the only enterprise carbon and energy management platform that helps companies automate reporting and deploy cost-saving energy projects.” Source: RevenueBase Database · checked Aug 31, 2026
8	Aclima, INC	Indirect evidence	San Francisco, CA, United States	51-200	57 contacts →
	Indirect evidence “Aclima is pioneering an entirely new way to diagnose the health of our air and track climate-changing pollution.” Source: RevenueBase Database · checked Aug 31, 2026
9	Sinai Carbon Management	Indirect evidence	San Francisco, CA, United States	51-200	54 contacts →
	Indirect evidence “SINAI Technologies Inc.” Source: RevenueBase Database · checked Aug 31, 2026
10	Optera	Indirect evidence	Boulder, CO, United States	11-50	46 contacts →
	Indirect evidence “We are a knowledgeable team that enjoys working with industry leaders and those just beginning their sustainability journeys.” Source: RevenueBase Database · checked Aug 31, 2026
11	Watchwire By Tango	Partial evidence	New York, NY, United States	11-50	39 contacts →
	Partial evidence “Tango Energy & Sustainability (fka WatchWire) is a sustainability and energy management software-as-a-service (EMSaaS) provider.” Source: RevenueBase Database · checked Aug 31, 2026
12	Bevolve	Partial evidence	Houston, TX, United States	11-50	30 contacts →
	Partial evidence “Bevolve is an impact-creation software platform empowering organizations to turn sustainability initiatives from a cost center into a growth engine.” Source: RevenueBase Database · checked Aug 31, 2026
13	ZASTI	Partial evidence	Virginia, VA, United States	11-50	27 contacts →
	Partial evidence “Zasti is a carbon tech company bringing ATOM, a suite of AI-powered solutions, to propel businesses on their path of decarbonization and enable an ultimate goal of net-zero…” Source: RevenueBase Database · checked Aug 31, 2026
14	Calico Energy	Indirect evidence	Seattle, WA, United States	11-50	26 contacts →
	Indirect evidence “Calico Energy is a mission driven company focused on scaling energy solutions and decarbonization.We think outside of the box and work to make the world a better place.” Source: RevenueBase Database · checked Aug 31, 2026
15	Adaptis	Strong evidence	New York, United States	11-50	26 contacts →
	Strong evidence “Adaptis is a diverse team of carbon reduction experts supercharged by a proprietary software platform for evaluating and optimizing building performance, whole-life carbon, and…” Source: RevenueBase Database · checked Aug 31, 2026
16	Envana Software Solutions	Partial evidence	Houston, TX, United States	11-50	25 contacts →
	Partial evidence “Envana Software Solutions provides digital greenhouse gas emissions management software-as-a-service products.” Source: RevenueBase Database · checked Aug 31, 2026
17	NZERO	Indirect evidence	Reno, NV, United States	11-50	24 contacts →
	Indirect evidence “NZero helps organizations turn energy and emissions data into performance gains.” Source: RevenueBase Database · checked Aug 31, 2026
18	Cloverly	Partial evidence	Atlanta, GA, United States	11-50	24 contacts →
	Partial evidence “At Cloverly, we’re powering the next era of climate impact by giving carbon credit suppliers the technology, distribution, and operational infrastructure they need to thrive in…” Source: RevenueBase Database · checked Aug 31, 2026
19	Aligned Incentives, A Bureau Veritas Company	Partial evidence	Middleton, MA, United States	11-50	23 contacts →
	Partial evidence “Founders Craig Cammarata and Yann Risz and their clients faced frustrations for years, existing sustainability software solutions did not provide specific insights into the…” Source: RevenueBase Database · checked Aug 31, 2026
20	Accel1	Indirect evidence	Alpharetta, GA, United States	51-200	20 contacts →
	Indirect evidence “At Accel1, we engineer solutions that combine technology, intelligence, and innovation to empower businesses and governments to thrive in a sustainable future.” Source: RevenueBase Database · checked Aug 31, 2026
21	Open Earth Foundation	Indirect evidence	Los Angeles, United States	11-50	19 contacts →
	Indirect evidence “Collectively enhancing our planetary resilience.” Source: RevenueBase Database · checked Aug 31, 2026
22	Cleartrace	Strong evidence	Austin, TX, United States	11-50	19 contacts →
	Strong evidence “Cleartrace is an energy data and carbon accounting platform providing companies with the digital infrastructure to enable decision-making to mitigate environmental risk, prove…” Source: RevenueBase Database · checked Aug 31, 2026
23	good.lab	Indirect evidence	San Mateo, CA, United States	11-50	18 contacts →
	Indirect evidence “Sustainability can feel overwhelming.” Source: RevenueBase Database · checked Aug 31, 2026
24	ISL Analytics	Partial evidence	Las Vegas, NV, United States	11-50	18 contacts →
	Partial evidence “We empower industries tackling the challenges of Climate Change and Energy Transition with actionable data and insightful solutions through our advanced Software Suite.” Source: RevenueBase Database · checked Aug 31, 2026
25	Ecocart	Indirect evidence	San Francisco, CA, United States	51-200	18 contacts →
	Indirect evidence “Having a sincere focus on sustainability is no longer just a nice-to-have.” Source: RevenueBase Database · checked Aug 31, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: city carbon accounting software providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names city carbon accounting software providers.
Partial evidence: Its own public description names part of city carbon accounting software providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name city carbon accounting software providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 157 city carbon accounting software providers based in the United States

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City carbon accounting software providers based in the United States at a glance

As of Aug 31, 2026

37.9%Verified-email coverage

36.9%Mobile-number coverage

14.7Average contacts per company

1-10Median size (employees)

11.5%Largest-city concentration · San Francisco

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among city carbon accounting software providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “city carbon accounting software providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names city carbon accounting software providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among city carbon accounting software providers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 876 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on August 31, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names city carbon accounting software providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many city carbon accounting software providers are there based in the United States?

RevenueBase identified 157 city carbon accounting software providers headquartered in the United States as of August 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Watershed, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most city carbon accounting software providers?

San Francisco leads with 18 headquartered companies, followed by New York (16) and Houston (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 876 verified decision-maker contacts tracked across these 157 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.