How many investments has Haddington Ventures, L.L.C. made?

Haddington Ventures, L.L.C. has 14 tracked investments.

What stage does Haddington Ventures, L.L.C. invest at?

Haddington Ventures, L.L.C. invests at the Growth stage.

What is Haddington Ventures, L.L.C.'s typical check size?

Haddington Ventures, L.L.C. typically writes checks of $20M – $70M.

What sectors does Haddington Ventures, L.L.C. focus on?

Haddington Ventures, L.L.C. focuses on Cleantech, Climate Tech, Energy, New Materials.

Where is Haddington Ventures, L.L.C. located?

Haddington Ventures, L.L.C. is headquartered in Houston, US.

Haddington Ventures, L.L.C.

Venture capital

Houston · Growth · 9 people tracked

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357 people in our graph share verified history with the Haddington Ventures, L.L.C. team — schools, employers, funds. One of them is your warm intro.

Ben Wirzunlockedknows James K. Lam · together at Jefferies (overlapped)

×6knows the team · via University of Houston

×2knows the team · via The Walt Disney Company

×2knows the team · via St. John's School

knows the team · via New England College of Business

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Investment thesis

Haddington Ventures backs entrepreneurs navigating a changing energy landscape by providing capital and strategic support. The firm focuses on 'energy hubs' — projects that co-locate production, storage, and demand to deliver greater efficiency and reliability. Its portfolio spans both conventional and renewable energy businesses that bring innovative new infrastructure to the U.S. energy sector.

Invests inCleantech Climate Tech Energy New Materials Houston United States

Source: firm website, verified Sep 15, 2026.

Stage

Growth

Check

$20M – $70M

Houston, Texas, US

Instruments

Equity

Founded

1998

AUM

$726.4M

Tracked investments

Team · 9 people

from the firm's website & public directories

J. Chris Jones· Founding Partner / Advisor· Houstonin

Co-founded Haddington in 1998 and focuses on acquisitions, financing, and administrative matters while serving as the primary interface with fund limited partners. Previously was CFO and later SVP/COO of Tejas Power Corporation, and CFO of The Fisk Group; began his career at Price Waterhouse.

c•••@hvllc.comreveal

John A. Strom· Founding Partner / Managing Director· Houstonin

Co-founded Haddington in 1998 and focuses on sales, marketing, and regulatory matters while seeking new investment areas driven by industry trends. Previously co-founded and served as President of TPC Corporation.

j•••@hvllc.comreveal

M. Scott Jones· Founding Partner / Advisor· Houston

Oversees legal and administrative matters for Haddington and supports portfolio companies on major commercial transactions, financings, and monetizations. Previously served as VP, General Counsel and Secretary of TPC Corporation and practiced law in Houston.

s•••@hvllc.comreveal

James K. Lam· Managing Director· Houstonin

Joined Haddington in 2001 and focuses on macro-industry analysis, investment origination, due diligence, portfolio oversight, and financings; serves on the Board of Managers of Magnum Energy. Previously worked in investment banking natural gas groups at Merrill Lynch and Jefferies & Co.

j•••@hvllc.comreveal

Sam H. Pyne· Managing Director· Houstonin

Joined Haddington in 2007 and evaluates and executes new investments, conducts industry analysis, and supports portfolio initiatives; serves on the Board of Managers at Eureka, Endicott, and Apex CAES. Previously was an equity analyst at Howard Weil and worked in engineering roles.

s•••@hvllc.comreveal

Turner Harris· Vice President· Houstonin

Joined the firm as an Associate in 2021 after earning his MBA; sources new investments, manages due diligence, and supports debt and equity raises for infrastructure project financings. Previously worked at GATE Energy in deepwater risk management.

t•••@hvllc.comreveal

Karla Coronado· Executive Assistant· Houstonin

Joined Haddington in 2016 as an Executive Assistant, overseeing daily office operations and providing administrative and analytical support to the team. Previously worked as an Executive/HR Assistant at Gulf Winds International.

Kyle Gionis· Chief Accounting Officer· Houston

Became Chief Accounting Officer of Haddington in 2019 after serving as CFO at Apex CAES, a portfolio company. Previously held controller and risk control roles at Keystone Energy Partners, Kinetic Energy, and Reliant Energy, and was an auditor at Arthur Andersen. Active CPA in Texas.

James Roger Bresnahan· Executive Officer

What they invest in

from 3 of 14 portfolio companies

Energy ×3Cleantech ×2Climate Tech ×2Deep Tech ×1Logistics & Supply Chain ×1

HQs:United States×3

Investments · 14 tracked

founders shown can be your intro path

Sawtooth Cavernssawtoothcaverns.com in✓ verified

Sawtooth Caverns operates an underground facility outside Delta, Utah that was initially developed in 2014; the company manages infrastructure expansion and capability development at the site as a joint venture.

EnergyLogistics & Supply ChainDelta, US

ACES Deltaaces-delta.com

ACES Delta produces and stores green hydrogen using renewable electricity at an Advanced Clean Energy Storage hub in Utah, serving utilities, industrial companies, and governments across the Western U.S. with carbon-free fuel and energy storage capabilities.

CleantechClimate TechDeep TechEnergyDelta, US

Rob Webster(Founder & Former Chief Strategy Officer)Craig Broussard(Former President, CEO and Board Chair)

Magnum Developmentmagnumdev.com

Magnum Development operates the Western Energy Hub in Delta, Utah, using a large underground salt formation to store liquids and gases such as utility-scale hydrogen produced from renewable energy.

CleantechClimate TechEnergyDelta, US

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Advanced Clean Energy Storage IAPEX CAESBear Paw EnergyBobcat StorageCAES Development CompanyEureka ResourcesGulf Coast LNGIACX LLCLodi Gas StorageSago EnergySilicon Energy

Portfolio news

latest coverage across their companies

Magnum Development - DCD

Magnum Development · datacenterdynamics.com · Jun 18, 2026

ACES Delta Presents $100,000 in Scholarship Support

ACES Delta · snow.edu · Dec 17, 2025

Frequently asked questions

How many investments has Haddington Ventures, L.L.C. made?: Haddington Ventures, L.L.C. has 14 tracked investments.
What stage does Haddington Ventures, L.L.C. invest at?: Haddington Ventures, L.L.C. invests at the Growth stage.
What is Haddington Ventures, L.L.C.'s typical check size?: Haddington Ventures, L.L.C. typically writes checks of $20M – $70M.
What sectors does Haddington Ventures, L.L.C. focus on?: Haddington Ventures, L.L.C. focuses on Cleantech, Climate Tech, Energy, New Materials.
Where is Haddington Ventures, L.L.C. located?: Haddington Ventures, L.L.C. is headquartered in Houston, US.

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