FullCycle Climate Partners
FullCycle Climate Partners is a Los Angeles growth-equity firm that invests in commercially-proven, climate-critical infrastructure technologies. It backs the companies and, on preferential terms, the infrastructure projects that deploy them, scoring each deal on carbon impact per dollar. In (don't) Waste Water's database, FullCycle has backed one water company across two deals.
Compiled by Antoine Walter, (don't) Waste Water, from official filings and direct intelligence in Leviathan.
The take
FullCycle Climate Partners does something most climate funds don't: it buys into the companies and into the physical infrastructure those companies build. Founder Ibrahim AlHusseini, an early backer of Tesla and Bloom Energy, set FullCycle up to chase technologies that are already commercially proven rather than lab bets, on the logic that the climate clock rewards deployment over discovery. The firm runs every candidate through a homemade yardstick it calls CROI-20, short for carbon return on investment over twenty years, which ranks deals by how much greenhouse gas a dollar can avoid.
FullCycle finds water where energy and pipes meet. Its one water holding in my Leviathan database, InPipe Energy, bolts a small turbine inside municipal water mains and harvests the spare pressure utilities normally throw away, turning it into carbon-free electricity while taming the pressure spikes that burst pipes and waste water. Across the two deals the funds directory counts, that is the whole of FullCycle's water exposure, and it is a telling pick: not a treatment chemistry or a sensor, but the unglamorous plumbing every water system already runs.
Beyond water, FullCycle spreads across the same climate-infrastructure logic, from Evrnu's textile recycling to Sustainitech's energy-stingy indoor farming, so water is one thread in a wider weave rather than the whole cloth. For an impact-curious investor, FullCycle reads less as a water specialist than as a deployment financier that treats a water pipe, a recycling line, and a farm the same way: as proven hardware waiting on capital to scale.
Water Commitment Score
Compiled from official filings, third-party records, and direct intelligence from investors and founders, in Leviathan · recomputed monthly · as of Jun 2026.
How they invest
Portfolio · 1 water companies
Frequently asked
- What does FullCycle Climate Partners invest in?
- FullCycle Climate Partners invests in commercially-proven, climate-critical infrastructure technologies, then helps finance the projects that deploy them. Its sectors span energy, circular materials, sustainable agriculture, and the water-energy intersection. In (don't) Waste Water's database, FullCycle's single water company is InPipe Energy, which generates power from municipal water pressure.
- Who runs FullCycle Climate Partners?
- FullCycle Climate Partners was founded by Ibrahim AlHusseini, its Managing Partner, an investor with more than 25 years backing sustainability ventures and an early stake in Tesla and Bloom Energy. Partner Stephan Nicoleau has driven the firm's work at the intersection of water and energy infrastructure.
- Where is FullCycle Climate Partners based?
- FullCycle Climate Partners is based in Los Angeles, California, with a second office in New York City. The firm invests in climate-infrastructure companies across the United States, including InPipe Energy in Portland, Oregon, the one water company (don't) Waste Water tracks in its portfolio.
- How many water companies has FullCycle Climate Partners backed?
- In (don't) Waste Water's database, FullCycle Climate Partners has backed one water company, InPipe Energy, across two deals. FullCycle is a climate generalist, so water sits alongside energy, recycling, and agriculture rather than forming a dedicated, standalone water strategy.
- Is FullCycle Climate Partners the same as the FullCycle Energy Fund?
- FullCycle Climate Partners is the current climate-infrastructure investment firm led by Ibrahim AlHusseini, sometimes written as FullCycle or Full Cycle Climate Partners. It is distinct from earlier-named vehicles such as the FullCycle Energy Fund, though all trace back to AlHusseini's climate-investing work.