Company lists · Data refreshed September 2026

Top 12 Climate tech software companies based in Houston, United States

RevenueBase identified 25 climate tech software companies headquartered in Houston, United States as of September 2026 and tracks 1,195 professional contacts across them, including 706 with verified work emails. San Francisco is the largest hub.

This list covers climate tech software companies headquartered in Houston, 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 September 14, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review
25Companies
1,195Contacts tracked
706Verified emails
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The 12 largest climate tech software companies based in Houston, United States

Ranked by team size
Top 12 of 25 climate tech software companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to climate tech software companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceHouston, TX, United StatesHQ checked Sep 14, 2026501-1,000417 contacts →

Indirect evidence

“At Stem, we’re reimagining technology to drive the energy transition.”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceHouston, TX, United StatesHQ checked Sep 14, 2026501-1,000306 contacts →

Indirect evidence

“With decades of operating history and innovation across our trusted brands, Cimarron provides technology-driven emissions management solutions for the global energy system.”

Source: RevenueBase Database · checked Sep 14, 2026
3Partial evidenceHouston, TX, United StatesHQ checked Sep 14, 2026201-500200 contacts →

Partial evidence

“Anew Climate is a global leader of diverse climate solutions, bringing innovative products and services to the public and private sectors to help reduce or offset their carbon…”

Source: RevenueBase Database · checked Sep 14, 2026
4Indirect evidenceHouston, TX, United StatesHQ checked Sep 14, 202651-20096 contacts →

Indirect evidence

“ClimeCo is an award-winning leader in decarbonization, empowering global organizations with customized sustainability pathways.”

Source: RevenueBase Database · checked Sep 14, 2026
5Indirect evidenceHouston, TX, United StatesHQ checked Sep 14, 202611-5080 contacts →

Indirect evidence

“Syzygy Plasmonics is a technology company decarbonizing chemical production with its proprietary light-driven reactor technology.”

Source: RevenueBase Database · checked Sep 14, 2026
6Partial evidenceHouston, TX, United StatesHQ checked Sep 14, 202611-5024 contacts →

Partial evidence

“Envana Software Solutions provides digital greenhouse gas emissions management software-as-a-service products.”

Source: RevenueBase Database · checked Sep 14, 2026
7Partial evidenceHouston, TX, United StatesHQ checked Sep 14, 202611-5011 contacts →

Partial evidence

“Terrapass is a multi-disciplinary team of individuals dedicated to the fight against climate change.”

Source: RevenueBase Database · checked Sep 14, 2026
8Strong evidenceHouston, TX, United StatesHQ checked Sep 14, 20261-106 contacts →

Strong evidence

“Tierra Climate is building the Power Trading Superintelligence software layer for managing clean energy portfolios.”

Source: RevenueBase Database · checked Sep 14, 2026
9Partial evidenceHouston, TX, United StatesHQ checked Sep 14, 202611-506 contacts →

Partial evidence

“ESG Enterprise is an Environmental, Social, and Governance software, SaaS and data analytics company designed to help businesses, NGOs and governments reduce ESG risks, manage…”

Source: RevenueBase Database · checked Sep 14, 2026
10Indirect evidenceHouston, TX, United StatesHQ checked Sep 14, 20261-105 contacts →

Indirect evidence

“Edat is an AI-powered environmental intelligence platform for carbon accounting, LCA, assurance, and sustainability reporting.”

Source: RevenueBase Database · checked Sep 14, 2026
11Partial evidenceHouston, TX, United StatesHQ checked Sep 14, 20261-103 contacts →

Partial evidence

“Nedd Technologies is democratizing sustainability and emissions intelligence with AI-powered software that makes enterprise-grade monitoring accessible to organizations of all…”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceHouston, TX, United StatesHQ checked Sep 14, 20261-102 contacts →

Partial evidence

“Quantum New Energy (QNE) is a Climate Technology Company based in Houston, Texas, providing a data-driven sustainability platform.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 12 of 25 climate tech software companies based in Houston, United States

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Climate tech software companies based in Houston, United States at a glance

As of Sep 14, 2026
59.1%Verified-email coverage
47.8Average contacts per company
1-10Median size (employees)
156.0%Largest-city concentration · San Francisco
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
14
11-50
6
51-200
2
201-500
1
501-1,000
2

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 25 companies.

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 climate tech software companies, 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 Houston, United States whose own description of what they do matches “climate tech software companies”. 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 climate tech software companies), 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 climate tech software companies, and records with no verified work email. Companies headquartered outside Houston 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, 706 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 September 14, 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.

Climate tech software companies by metro in the United States

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 climate tech software companies, 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 climate tech software companies are there based in Houston, United States?

RevenueBase identified 25 climate tech software companies headquartered in Houston, United States as of September 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?

Stem, INC, headquartered in Houston, tops this list with the largest team on record.

Which city has the most climate tech software companies?

San Francisco leads with 39 headquartered companies, followed by New York (37) and Houston (25).

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 706 verified decision-maker contacts tracked across these 25 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 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.