Company lists · Data refreshed September 2026

Top 25 Hydropower engineering consultancy companies based in New Zealand

Name: Hydropower engineering consultancy companies based in New Zealand
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 70 companies tracked

RevenueBase identified 70 hydropower engineering consultancy companies headquartered in New Zealand as of September 2026 and tracks 2,533 professional contacts across them, including 758 with verified work emails and 62 with mobile numbers. Auckland is the largest hub.

This list covers hydropower engineering consultancy companies headquartered in New Zealand, 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 3, 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 3, 2026 86% judged on-target in blind review

70Companies

2,533Contacts tracked

758Verified emails

62Mobile numbers

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The 25 largest hydropower engineering consultancy companies based in New Zealand

Ranked by team size

Top 25 of 70 hydropower engineering consultancy companies based in New Zealand, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to hydropower engineering consultancy 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Opus International Consultants Limited	Indirect evidence	Wellington, New ZealandHQ checked Sep 3, 2026	1,001-5,000	569 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 3, 2026
2	Ergo Consulting	Strong evidence	Auckland, New ZealandHQ checked Sep 3, 2026	51-200	110 contacts →
	Strong evidence “Ergo aspires to be New Zealand’s first choice provider of engineering consultancy services to the power and energy industry.” Source: RevenueBase Database · checked Sep 3, 2026
3	Riley Consultants	Partial evidence	Takapuna, New ZealandHQ checked Sep 3, 2026	51-200	86 contacts →
	Partial evidence “Our company has evolved from humble yet visionary origins to become the multi-disciplinary consultancy it is today.” Source: RevenueBase Database · checked Sep 3, 2026
4	Powell Fenwick	Strong evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	51-200	79 contacts →
	Strong evidence “Powell Fenwick is a Christchurch based engineering consultancy firm with significant experience in all facets of building design and construction.” Source: RevenueBase Database · checked Sep 3, 2026
5	Edison Consulting Group	Partial evidence	Auckland, New ZealandHQ checked Sep 3, 2026	51-200	75 contacts →
	Partial evidence “Edison Consulting Group provides specialist project management, design engineering and advisory services, delivering successful energy projects to the New Zealand energy sector.” Source: RevenueBase Database · checked Sep 3, 2026
6	Groundline	Strong evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	51-200	71 contacts →
	Strong evidence “GROUNDLINE is a global engineering consultancy dedicated to keeping the lights on, with offices in Australia, New Zealand, and the United Kingdom.” Source: RevenueBase Database · checked Sep 3, 2026
7	MTL NZ	Partial evidence	New ZealandHQ checked Sep 3, 2026	51-200	64 contacts →
	Partial evidence “Founded in 1994, MTL specialises in engineering design and project management for renewable energy, water infrastructure and industrial projects.” Source: RevenueBase Database · checked Sep 3, 2026
8	GWE Consulting Engineers	Strong evidence	Takapuna, New ZealandHQ checked Sep 3, 2026	11-50	42 contacts →
	Strong evidence “GWE Consulting Engineers is a multi-disciplinary engineering consultancy providing geotechnical, civil and water, environmental, wastewater and stormwater engineering services and…” Source: RevenueBase Database · checked Sep 3, 2026
9	CGW Consulting Engineers	Partial evidence	Nelson, New ZealandHQ checked Sep 3, 2026	11-50	40 contacts →
	Partial evidence “CGW Consulting Engineers is a multi-discipline consulting engineering firm with its head office in Nelson serving our clients’ needs for projects throughout New Zealand and…” Source: RevenueBase Database · checked Sep 3, 2026
10	Damwatch Engineering LTD	Strong evidence	New ZealandHQ checked Sep 3, 2026	11-50	40 contacts →
	Strong evidence “Damwatch is a highly respected niche consultancy business based in Wellington, New Zealand and provide services to hydropower, water and irrigation clients internationally.” Source: RevenueBase Database · checked Sep 3, 2026
11	Engco Consulting Engineers	Partial evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	51-200	39 contacts →
	Partial evidence “ENGCO is a multi-disciplinary national consultancy with expertise delivering large scale projects, worth in excess of $100 million, and at the boutique end of the market…” Source: RevenueBase Database · checked Sep 3, 2026
12	ACH Consulting Engineers	Indirect evidence	Auckland, New ZealandHQ checked Sep 3, 2026	11-50	37 contacts →
	Indirect evidence “Today ACH employs over 40 staff in their Auckland office with a number being Chartered Professional Engineers.” Source: RevenueBase Database · checked Sep 3, 2026
13	Mesh Consulting Limited	Partial evidence	Auckland, New ZealandHQ checked Sep 3, 2026	11-50	33 contacts →
	Partial evidence “Since 2018, Mesh has been transforming the consulting engineering landscape within the building services sector, one project at a time.” Source: RevenueBase Database · checked Sep 3, 2026
14	Blue Barn Consulting LTD	Indirect evidence	Auckland, New ZealandHQ checked Sep 3, 2026	11-50	28 contacts →
	Indirect evidence “Blue Barn Consulting was established in 2008, and is proudly 100% New Zealand owned and operated.” Source: RevenueBase Database · checked Sep 3, 2026
15	Regeneratenz LTD	Indirect evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	11-50	23 contacts →
	Indirect evidence “RegenerateNZ Ltd.(Re-Generate) was formed in August 2017 as a specialist energy and water solutions business with commercial activities spanning; consulting, design, supply…” Source: RevenueBase Database · checked Sep 3, 2026
16	Fluid Engineering Consultancy	Indirect evidence	Tauranga, New ZealandHQ checked Sep 3, 2026	11-50	17 contacts →
	Indirect evidence “We design building services for a variety of projects.” Source: RevenueBase Database · checked Sep 3, 2026
17	Structex	Strong evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	11-50	16 contacts →
	Strong evidence “Structex combines the knowledge and experience of a large engineering consultancy with the effectiveness, close business relationships and agility of a small team.” Source: RevenueBase Database · checked Sep 3, 2026
18	Williamson Water & Land Advisory	Partial evidence	Kumeu, New ZealandHQ checked Sep 3, 2026	11-50	16 contacts →
	Partial evidence “Williamson Water & Land Advisory (WWLA) is a New Zealand based, employee owned, niche environmental consultancy.” Source: RevenueBase Database · checked Sep 3, 2026
19	Clendon Burns & Park LTD	Indirect evidence	Wellington, New ZealandHQ checked Sep 3, 2026	11-50	14 contacts →
	Indirect evidence “Clendon Burns & Park ltd has operated as a firm of Consulting Structural and Civil Engineers in Wellington for over 60 years.” Source: RevenueBase Database · checked Sep 3, 2026
20	Dreamcast Group Consulting Engineers	Strong evidence	Auckland, New ZealandHQ checked Sep 3, 2026	11-50	13 contacts →
	Strong evidence “We provide Civil, Structural and Geotechnical Engineering consultancy services.” Source: RevenueBase Database · checked Sep 3, 2026
21	SWE Southern Water Engineering	Partial evidence	Blenheim, New ZealandHQ checked Sep 3, 2026	11-50	12 contacts →
	Partial evidence “SWE (Southern Water Engineering) is a leading Marlborough-based engineering company specialising in water engineering, electrical and automation solutions, and pumping technology.” Source: RevenueBase Database · checked Sep 3, 2026
22	NEW Zealand Consulting Engineers LTD	Indirect evidence	Wellington, New ZealandHQ checked Sep 3, 2026	11-50	11 contacts →
	Indirect evidence “WE ADD VALUE, NOT COST.” Source: RevenueBase Database · checked Sep 3, 2026
23	Fluent Infrastructure Solutions Limited	Strong evidence	Dunedin, New ZealandHQ checked Sep 3, 2026	11-50	11 contacts →
	Strong evidence “Fluent Solutions is a Dunedin and Queenstown based Engineering Consultancy with a strong reputation and track record in providing Civil and Infrastructure, 3 Waters and…” Source: RevenueBase Database · checked Sep 3, 2026
24	Mcmahon LTD	Partial evidence	Grafton, New ZealandHQ checked Sep 3, 2026	11-50	11 contacts →
	Partial evidence “With a proud history of over 30 years servicing industry, we hold a unique position within the engineering sector in New Zealand.” Source: RevenueBase Database · checked Sep 3, 2026
25	E2environmental LTD	Strong evidence	Christchurch, New ZealandHQ checked Sep 3, 2026	11-50	10 contacts →
	Strong evidence “e2Environmental is a highly experienced, full service civil engineering consultancy specialising in water engineering and land development.” Source: RevenueBase Database · checked Sep 3, 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: hydropower engineering consultancy companies. 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 hydropower engineering consultancy companies.
Partial evidence: Its own public description names part of hydropower engineering consultancy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hydropower engineering consultancy companies. 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 70 hydropower engineering consultancy companies based in New Zealand

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Hydropower engineering consultancy companies based in New Zealand at a glance

As of Sep 3, 2026

29.9%Verified-email coverage

2.4%Mobile-number coverage

36.2Average contacts per company

11-50Median size (employees)

31.4%Largest-city concentration · Auckland

Sep 3, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

5,001-10,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

5731–60

44161–90

25990–180

1180+

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 hydropower engineering consultancy 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 New Zealand whose own description of what they do matches “hydropower engineering consultancy 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 hydropower engineering consultancy 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 hydropower engineering consultancy companies, and records with no verified work email. Companies headquartered outside New Zealand 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, 758 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 3, 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 hydropower engineering consultancy 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 hydropower engineering consultancy companies are there based in New Zealand?

RevenueBase identified 70 hydropower engineering consultancy companies headquartered in New Zealand 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?

Opus International Consultants Limited, headquartered in Wellington, tops this list with the largest team on record.

Which city has the most hydropower engineering consultancy companies?

Auckland leads with 22 headquartered companies, followed by Christchurch (13) and Wellington (5).

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 758 verified decision-maker contacts tracked across these 70 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 3, 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.