Active

Energy Capital Partners

General contacts

Investor type

PE / Debt fund

Founded

2005

AUM

$41 000 M

Location

Summit, New Jersey, United States

Investment Ticket

$50-100 m

Investment Stage

Late Stage (Series C+)

Region of investment

North America Europe

Investor profile last updated: 07 August, 2026

Profile

Energy Capital Partners is a private equity investor specializing in energy transition infrastructure, headquartered in Summit, New Jersey. Founded in 2005 by Doug Kimmelman, an ex-Goldman Sachs Senior Managing Director, the firm operates with a large team experienced in electricity and sustainable infrastructure markets. Their competitive edge lies in operational involvement to build, scale, and improve portfolio companies, aligning with the evolving energy landscape.

ECP invests in sectors including power generation, renewable energy, energy storage, and sustainable infrastructure. They focus on mid-to-large-scale transactions in North America and frequently work with global institutional investors like sovereign wealth funds and pension plans. Notable funds under their management include ECP V ($4.4 billion, 2024) and ECP VI ($8.1 billion, 2025). Their investment size typically ranges from $50-100 million.

Notable investments from ECP include DCC - a global multi-energy sales company, EnergySolutions - a nuclear services provider, and Grain LNG - Europe's largest LNG terminal. Past exits include Calpine to Constellation Energy and others like Cornerstone Generation and Liberty Tire Recycling.

Industry

Industrial Transportation Utilities AI Infrastructure Energy CleanTech Nuclear / Fusion

Energy Capital Partners Funds

Name	Type	Industry	Stage	Region	Size	AUM	Launch date
ECP VI	Private Equity (PE) Debt fund	Transportation AI Infrastructure Energy Nuclear / Fusion	Late Stage (Series C+)	North America Europe	$50-100 m	$8100 M	August 2026

Contacts

Name

Title

Social Networks

Doug Kimmelman Executive Chairman/Founder

Executive Chairman/Founder

d•••@•••

Murray Karp Managing Partner & COO

Managing Partner & COO

m•••@•••

Upgrade to see contacts

EtX2P8GbNFJ9qpzr EtX2P8GbNFJ9qpzr

EtX2P8GbNFJ9qpzr

[email protected]

EtX2P8GbNFJ9qpzr EtX2P8GbNFJ9qpzr

EtX2P8GbNFJ9qpzr

[email protected]

EtX2P8GbNFJ9qpzr EtX2P8GbNFJ9qpzr

EtX2P8GbNFJ9qpzr

[email protected]

Investment-team contacts for Energy Capital Partners — including verified work emails and LinkedIn profiles — are available to Private Equity List subscribers.
Instant access on the web. Plans from $129/month — see pricing.

Contacts sourced from the firm's website and LinkedIn, re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

FAQs about Energy Capital Partners

Is Energy Capital Partners a venture capital or private equity firm?

Energy Capital Partners is a private equity firm that also operates as a debt fund. It backs companies at Late Stage (Series C+), writing tickets of $50-100 m.

Where is Energy Capital Partners located?

Energy Capital Partners is located in Summit, New Jersey, United States.

When was Energy Capital Partners founded?

Energy Capital Partners was founded in 2005.

What sectors and industries does Energy Capital Partners invest in?

Energy Capital Partners invests in companies and startups in Industrial, Transportation, Utilities, AI, Infrastructure, Energy, CleanTech, Nuclear / Fusion.

What is Energy Capital Partners geographical focus of investments?

Energy Capital Partners invests in companies and startups in North America, Europe.

At what stages of companies and startups does Energy Capital Partners typically invest in?

Energy Capital Partners invests in companies and startups at Late Stage (Series C+).

What is the usual amount of Energy Capital Partners investment?

Energy Capital Partners usually invests $50-100 m on average.

What is the amount of assets of under management (AUM) for Energy Capital Partners?

Energy Capital Partners has around $41 000m assets under management.

When was Energy Capital Partners last fund created?

Energy Capital Partners last fund was created/launched in 2026-08-07

What are the contacts of Energy Capital Partners?

Energy Capital Partners can be reached through its website ecpgp.com and its LinkedIn page. Its general enquiries address is [email protected]. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for Energy Capital Partners — names, roles, verified work emails and LinkedIn profiles — available on a Pro plan from $129/month (see pricing). Contacts are sourced from the firm's website and LinkedIn and re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

Can I access Energy Capital Partners data via API or MCP?

Yes. Every field on this page — profile, funds, investment criteria, portfolio and investment-team contacts — is available programmatically through the Private Equity List REST API and MCP server, so AI assistants such as Claude and ChatGPT can query Energy Capital Partners directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.

When was the Energy Capital Partners profile last updated?

Private Equity List re-verifies investor profiles on a rolling cycle, pulling from the firm's own website and LinkedIn rather than a one-off import. This profile was last updated on 07 August, 2026. Something out of date here? Report it — we re-run that firm within 48h and get back to you.