Company lists · Data refreshed September 2026

Top 18 Sustainable development firms based in the Philippines

RevenueBase identified 66 sustainable development firms headquartered in the Philippines as of September 2026 and tracks 722 professional contacts across them, including 98 with verified work emails. Manila is the largest hub.

This list covers sustainable development firms headquartered in the Philippines, 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 22, 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 22, 2026 86% judged on-target in blind review
66Companies
722Contacts tracked
98Verified emails
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The 18 largest sustainable development firms based in the Philippines

Ranked by team size
Top 18 of 66 sustainable development firms based in the Philippines, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable development firms: 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 evidenceMakati City, PhilippinesHQ checked Sep 22, 202651-200131 contacts →

Indirect evidence

“Philkoei International, Inc.(PKII) is a design, engineering and consulting firm established in the Philippines in October 1989.”

Source: RevenueBase Database · checked Sep 22, 2026
2Partial evidenceMakati, PhilippinesHQ checked Sep 22, 202651-20069 contacts →

Partial evidence

“VISION To be for its customers, the most preferred developer of affordable, quality homes and a steward of sustainable and earth-friendly communities.”

Source: RevenueBase Database · checked Sep 22, 2026
3Partial evidencePasig, PhilippinesHQ checked Sep 22, 202651-20050 contacts →

Partial evidence

“Shaping the Environment of the Future Today CEST, Incorporated is a multi-disciplinary development consulting firm established in May 17,1988 and duly registered with the…”

Source: RevenueBase Database · checked Sep 22, 2026
4Strong evidencePasig City, PhilippinesHQ checked Sep 22, 202611-5049 contacts →

Strong evidence

“Drink Sustainability Communications is the leading consultancy firm specializing in sustainability and development communications in Southeast Asia.”

Source: RevenueBase Database · checked Sep 22, 2026
5Partial evidenceMakati, PhilippinesHQ checked Sep 22, 202611-5033 contacts →

Partial evidence

“Triconti ECC Renewables Corporation (TECC) is a renewable energy project development company offering technical consulting for all project phases from greenfield development to…”

Source: RevenueBase Database · checked Sep 22, 2026
6Partial evidenceQuezon City, PhilippinesHQ checked Sep 22, 202611-5031 contacts →

Partial evidence

“About the Company GreenDevelopment Sustainable Solutions, Inc.(GreenDev) aims to provide solutions and technical expertise in aiding clients’ needs for environmental management…”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceMakati City, PhilippinesHQ checked Sep 22, 202611-5015 contacts →

Indirect evidence

“REURASIA develops, engineers and operates renewable-energy projects for Philippine industry.”

Source: RevenueBase Database · checked Sep 22, 2026
8Partial evidenceMakati, PhilippinesHQ checked Sep 22, 202611-5014 contacts →

Partial evidence

“Freya is a consultancy firm specializing in business development, mainly in making renewable energy projects a reality across Southeast Asia.”

Source: RevenueBase Database · checked Sep 22, 2026
9Partial evidenceQuezon City, PhilippinesHQ checked Sep 22, 202611-5013 contacts →

Partial evidence

“TwoEco is an interdisciplinary policy and planning consultancy firm dedicated to shaping a more sustainable future.”

Source: RevenueBase Database · checked Sep 22, 2026
10Partial evidenceTaguig City, PhilippinesHQ checked Sep 22, 202611-5012 contacts →

Partial evidence

“We are specialized professionals in sustainability and energy management.”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidencePasig, PhilippinesHQ checked Sep 22, 202611-5012 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 22, 2026
12Partial evidenceSolana, PhilippinesHQ checked Sep 22, 202611-5012 contacts →

Partial evidence

“EIGEL Management Consulting is the only QMS Certified Consulting and Training Provider in the Philippines that specializes in Environmental Management, Local Development Planning…”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceQuezon City, PhilippinesHQ checked Sep 22, 202611-503 contacts →

Indirect evidence

“Design, engineering and consultancy firm specializing in renewable systems.”

Source: RevenueBase Database · checked Sep 22, 2026
14Indirect evidenceDavao City, PhilippinesHQ checked Sep 22, 202611-503 contacts →

Indirect evidence

“Galerio Environmental Consultancy (GEC) is a registered engineering and environmental management company.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceQuezon City, PhilippinesHQ checked Sep 22, 20261-103 contacts →

Indirect evidence

“At Bihasa Consultancy, our story is one of passion and purpose.”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidencePasig City, PhilippinesHQ checked Sep 22, 20261-103 contacts →

Indirect evidence

“CleanEnergy Solutions International (CSi) started its operation in CSi was formerly known as International Resources Group – Philippines and was an affiliate of the US-based…”

Source: RevenueBase Database · checked Sep 22, 2026
17Indirect evidenceMuntinlupa, PhilippinesHQ checked Sep 22, 20261-102 contacts →

Indirect evidence

“Headquartered in Metro Manila, Verne operates and implements projects all over the Philippines.”

Source: RevenueBase Database · checked Sep 22, 2026
18Indirect evidenceMeycauayan, PhilippinesHQ checked Sep 22, 202611-501 contacts →

Indirect evidence

“Metrogreen Technologies Corporation is a registered company established in 2016, provides complete solution to its client’s Green Energy requirements.”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 18 of 66 sustainable development firms based in the Philippines

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Sustainable development firms based in the Philippines at a glance

As of Sep 22, 2026
13.6%Verified-email coverage
10.9Average contacts per company
11-50Median size (employees)
13.6%Largest-city concentration · Manila
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
34
51-200
10
501-1,000
1

Email recency for this list is measured worldwide rather than for Philippines, so it is reported there. Company counts and contact totals on this page are exact for Philippines, over 66 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 sustainable development firms, 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 Philippines whose own description of what they do matches “sustainable development firms”. 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 sustainable development firms), 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 sustainable development firms, and records with no verified work email. Companies headquartered outside Philippines 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, 98 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 22, 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 sustainable development firms, 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 sustainable development firms are there based in the Philippines?

RevenueBase identified 66 sustainable development firms headquartered in the Philippines 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?

Philkoei International, INC, headquartered in Makati City, tops this list with the largest team on record.

Which city has the most sustainable development firms?

Manila leads with 9 headquartered companies, followed by Makati City Manila (5) and Quezon City (4).

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 98 verified decision-maker contacts tracked across these 66 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 22, 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.