Alexander Hap Ellis III
General Partner @ RockPort Capital
Boston, United States
Alexander Hap Ellis III is a Series B investor at RockPort Capital in Boston focused on Energy and Renewable Energy. Hap's interest in energy took root during his first job out of college, when he went to work for US Senator Edward Brooke (R-MA) as a Legislative Assistant. In the ensuing four years, Middle East events changed forever both the politics and the economics of the global energy sector. Once in the private sector he formed a boutique insurancebrokerage group to work with independent power companies. He was recruited away from the energy space by Knoll International to help re-invigorate this now well known furniture name. After the sale of Knoll to Westinghouse, he was recruited to Kenetech Corporation, the leading wind development and turbine manufacturer at the time, to help globally position this venture-backed company in anticipation of an IPO. After Kenetech and prior to joining RockPort, Hap and a partner developed, permitted and sold two 500+MW gas-fired power plants in the US, among other entrepreneurial ventures. Hap is a graduate of Colorado College with a BA in Political Science and earned an MBA from the Yale School of Management.
- Total investments:
- 7
- Last investment:
- Lead investor:
- 43%
Last updated:
For AI agents: llms.txt
Industries Alexander Hap Ellis III invests in
Stages Alexander Hap Ellis III invests in
Countries Alexander Hap Ellis III invests in
Contacts
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Investment Focus
Industry
- Energy 3 (43%)
- Renewable Energy 3 (43%)
- Electronics 2 (29%)
- Wind Energy 2 (29%)
- Manufacturing 2 (29%)
Stage
- Series B 2 (29%)
- Series C 2 (29%)
- Series A 1 (14%)
- Series D 1 (14%)
- Funding Round 1 (14%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Gazelle
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Gazelle is an e-commerce platform for buying and selling used electronic gadgets. They pay cash for used smartphones, tablets, laptops, and desktops and then inspect, certify them, and sell them to consumers looking for a cost-effective way to stay connected. The company was founded in 2006 and is headquartered in Boston, Massachusetts withoperations in Louisville, Kentucky. | $22M / Series D / Jul 21, 2011 | |
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Gazelle
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Gazelle is an e-commerce platform for buying and selling used electronic gadgets. They pay cash for used smartphones, tablets, laptops, and desktops and then inspect, certify them, and sell them to consumers looking for a cost-effective way to stay connected. The company was founded in 2006 and is headquartered in Boston, Massachusetts withoperations in Louisville, Kentucky. | $12M / Series C / Jul 21, 2010 | |
Southwest Windpower
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Southwest Windpower has been designing and distributing small wind turbines since 1987 and is the recognized global leader in the design, manufacturing and distribution of small wind systems. A pioneer in wind technology development, Southwest Windpower has built and shipped more than 180,000 wind turbines to over 120 countries worldwide.Headquartered in Broomfield, Colo., the company manufactures in Flagstaff, Ariz. and has operations in Cologne, Germany. The mission of Southwest Windpower is to be a global leader as a responsible designer, producer and provider of wind turbines up to 40kW, offering wind products chosen by customers for their quality, focused technology, performance, reliability, aesthetics, quietness, simplicity and lowest cost of energy. | $10M / Series C / Apr 07, 2009 | |
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Gazelle
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Gazelle is an e-commerce platform for buying and selling used electronic gadgets. They pay cash for used smartphones, tablets, laptops, and desktops and then inspect, certify them, and sell them to consumers looking for a cost-effective way to stay connected. The company was founded in 2006 and is headquartered in Boston, Massachusetts withoperations in Louisville, Kentucky. | Series B / Nov 10, 2008 | |
Northern Power Systems
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Northern Power Systems has been delivering innovative wind energy solutions in a changing landscape for over 34 years. Their partnerships with the Department of Energy and the National Renewable Energy Laboratory (NREL) have helped lay the foundation for Northern's advanced wind turbine technology. From Alaska to Malaysia, Their installed baseof turbines has logged millions of kilowatt-hours of production to date, demonstrating their commitment to performance and reliability. | $37M / Series A / Sep 25, 2008 | |
Deerpath Energy
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Deerpath Energy, Inc. is a full service provider of micro-wind energy systems that integrate beautifully into a community. Using their proprietary siting techniques, elegant designs, and state-of-the-art technologies, Deerpath creates renewable energy projects that save money and make a positive impact on the local environment. | $3.5M / Jul 21, 2008 | |
PPT Reasearch
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PPT developed proprietary chemistry and process technology that enables cost-effective slurry management for the solar, semiconductor, and optical industries. The Company's initial focus is outsourcing slurry management used to slice silicon ingots into wafers for use in photovoltaic cells, integrated circuits, and fiber optics. | $3M / Series B / Jan 24, 2008 |
Co-Investors
About RockPort Capital
RockPort Capital is a multi-stage venture capital firm that invests in the areas of alternative and traditional energy, mobility, and sustainability. For more than a decade RockPort has partnered with entrepreneurs to foster growth and create value in a broad range of industrial and consumer facing companies whose technologies and products provideinnovative solutions to significant worldwide markets. RockPort has a collaborative approach to investing, deep domain expertise, and insights into all aspects of energy and cleantech. With offices in Boston and Menlo Park, RockPort is globally recognized as being among the largest and most established energy-focused venture capital firms.
RockPort Capital Contacts
| Name | Phone | Socials | |
|---|---|---|---|
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Alexander Hap Ellis III
General Partner
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David J. Prend
Co-Founder and General Partner
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Diane Yung
Partner & CFO
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Janet James
Partner
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Stoddard M. Wilson
General Partner
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FAQ
What does Alexander Hap Ellis III invest in?
Alexander Hap Ellis III invests primarily in Energy, Renewable Energy and Electronics startups, most often at Series B and Series C stage. Most of the 7 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
How do I contact Alexander Hap Ellis III?
Public channels for Alexander Hap Ellis III include LinkedIn. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Alexander Hap Ellis III last invest?
The most recent investment recorded for Alexander Hap Ellis III closed in Jul 2011. Shizune tracks 7 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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