AltEnergy is an operator-led fund. Based in Norwalk, Connecticut, United States. Known portfolio companies include Eos Energy Storage and Viridity Energy, 2 companies in all.
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Investment focus
- Stage
- GrowthLate-StageSeed
- Focus
- BatteryData AnalyticsEnergy SoftwareEnterprise SaaSVertical SaaS
Contacts
Who to pitch at AltEnergy
AltEnergy portfolio companies (2)
- Eos Energy Storage
- Viridity Energy
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About AltEnergy
The firm's listing covers sectors Climate, Hardware and SaaS, and focus areas Battery, Data Analytics, Energy Software and Enterprise SaaS; known deals cluster at Growth, Late-Stage and Seed.
Russell Stidolph (Chairman and CEO) is listed as the contact to pitch at AltEnergy.
Frequently asked questions
What is AltEnergy?
AltEnergy is an operator-led fund based in Norwalk, Connecticut, United States, with a known portfolio of 2 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does AltEnergy invest in?
Listed sectors include Climate, Hardware and SaaS; listed focus areas include Battery, Data Analytics, Energy Software and Enterprise SaaS. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does AltEnergy invest at?
The known deals of AltEnergy include Growth, Late-Stage and Seed rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at AltEnergy?
One person at AltEnergy is on file, listed as a contact for the firm, with their own profile page.
How do I contact AltEnergy?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The one person attached to the firm has their own page, which shows whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal