Company lists · Data refreshed September 2026
Top 25 Pumped storage hydropower companies based in the United States
RevenueBase identified 44 pumped storage hydropower companies headquartered in the United States as of September 2026 and tracks 1,874 professional contacts across them, including 1,195 with verified work emails. Houston is the largest hub.
This list covers pumped storage hydropower companies 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 September 20, 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.
The 25 largest pumped storage hydropower companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 188 contacts → | ||||
Partial evidence “Jupiter Power is putting deep energy storage expertise, proven project execution capability, and significant capital to work to help make the energy transition a reality.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 172 contacts → | ||||
Partial evidence “The Plus Power team, led by seasoned executives from the renewables and energy storage industry, is accelerating the deployment of transmission-connected battery storage…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 143 contacts → | ||||
Partial evidence “Convergent Energy and Power manages all aspects of energy storage development for its grid operator, utility, and industrial customers.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 124 contacts → | ||||
Partial evidence “FirstLight Power (FirstLight) is a leading clean power producer, developer, and energy storage company serving North America.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 119 contacts → | ||||
Partial evidence “Focused on sustainability and innovation, esVolta develops, owns, and operates reliable utility-scale energy storage assets across the entire lifecycle - delivering value for…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 114 contacts → | ||||
Partial evidence “Key Capture Energy identifies, develops, constructs and operates energy storage solutions to foster greater deployment of renewable energy, create a more stable electric grid, and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 79 contacts → | ||||
Partial evidence “At Vesper Energy, we develop, build, own and operate renewable energy and energy storage facilities across the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 75 contacts → | ||||
Partial evidence “Eolian’s proven and enviable track record is evidenced by the successful funding and development of nearly 30 GW of operating or under-construction energy storage, solar, and wind…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 67 contacts → | ||||
Partial evidence “rPlus is a team of committed energy industry professionals working together to develop large-scale renewable energy generation and electric storage projects in the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 63 contacts → | ||||
Partial evidence “Hecate Energy is a leading developer of power generation and storage solutions in the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 62 contacts → | ||||
Partial evidence “East Point Energy develops, builds, owns, and operates grid-scale energy storage projects.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 58 contacts → | ||||
Partial evidence “GridStor develops, constructs, and operates battery energy storage projects that improve grid reliability and power economic growth across North America.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 48 contacts → | ||||
Partial evidence “At Peregrine we aim to execute and operate a portfolio of clean renewable assets across the North American energy grid with a unique focus on utility scale energy storage.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 36 contacts → | ||||
Partial evidence “At TransGrid Energy we specialize in developing, owning, and operating utility-scale energy storage and PV projects, fundamental to establishing a resilient and sustainable energy…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 35 contacts → | ||||
Partial evidence “Lightshift Energy, formerly Delorean Power, is a utility-scale energy storage development company that is transforming the way utilities manage and distribute power.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 32 contacts → | ||||
Partial evidence “Alpha Omega Power (“AOP”) is a utility-scale renewable energy developer, owner, and operator with a focus on grid scale battery storage.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 29 contacts → | ||||
Partial evidence “Elevate is a national renewable energy development company focused on the strategic deployment of battery energy storage resources co-located at existing large generation…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 27 contacts → | ||||
Partial evidence “GRH is New England’s largest producer of conventional hydropower.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 21 contacts → | ||||
Indirect evidence “NewSun Energy is a renewable energy development and investment company that specializes in electric power grid interconnection and transmission in the Pacific Northwest.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 19 contacts → | ||||
Partial evidence “Greenflash develops, acquires, builds, operates, manages, and monetizes grid scale storage.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 18 contacts → | ||||
Partial evidence “Houston-based Quidnet Energy is an energy storage company that uses the subsurface as a sustainable natural resource.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 17 contacts → | ||||
Partial evidence “Vitis Energy develops, constructs, operates and maintains energy generation and storage solutions that increase energy independence, achieve sustainability goals, manage/reduce…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 15 contacts → | ||||
Strong evidence “Rye Development is advancing America’s next generation of pumped storage hydropower, the largest and most proven form of energy storage.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 7 contacts → | ||||
Indirect evidence “At Absaroka Energy, we build the grid infrastructure necessary to ensure a future powered by clean, reliable energy.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Partial evidence “GreenGenStorage's Mokelumne Water Battery Project is designed to reduce California’s reliance on fossil fuels by using excess renewable generation to pump water to higher…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: pumped storage hydropower 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 pumped storage hydropower companies.
- Partial evidence
- Its own public description names part of pumped storage hydropower companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name pumped storage hydropower 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 44 pumped storage hydropower companies based in the United States
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Pumped storage hydropower companies based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 44 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 pumped storage hydropower 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 the United States whose own description of what they do matches “pumped storage hydropower 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 pumped storage hydropower 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 pumped storage hydropower companies, 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, 1,195 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 20, 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 pumped storage hydropower 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 pumped storage hydropower companies are there based in the United States?
RevenueBase identified 44 pumped storage hydropower companies headquartered in the 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?
Jupiter Power, headquartered in Austin, tops this list with the largest team on record.
Which city has the most pumped storage hydropower companies?
Houston leads with 5 headquartered companies, followed by New York (4) and Boston (3).
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 1,195 verified decision-maker contacts tracked across these 44 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 20, 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.
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