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On the show

Alena Fargere

Energy-transition investor and hydrogen expert; Board Director at Lhyfe

Hydrogen economist turned impact investor who co-founded SWEN Impact Fund for Transition, the first European fund dedicated to financing renewable gases, and now sits on the board of green-hydrogen producer Lhyfe.

📍 Paris, FranceLinkedIn

Compiled by Antoine Walter - from insight gathered on and off his (don’t) Waste Water microphone!

Alena Fargere is an energy-transition investor and hydrogen expert who co-founded the SWEN Impact Fund for Transition, the first European fund built to finance renewable gases (biogas and green hydrogen). A Forbes 30 Under 30 economist with a PhD from École Polytechnique, she now sits on the board of green-hydrogen producer Lhyfe. She guested on the show in 2022, as of 2026.

On the show
1 episode
In hydrogen since
2012
Recognition
Forbes 30 Under 30
Based
Paris, France

Alena Fargere came to investing the long way around, through the science. She describes herself simply: "Well, I'm a nerd." She studied engineering, picked up a master's in economics and public policy at Sciences Po, and then earned a PhD at École Polytechnique on using hydrogen to decarbonize transport, which is the not-very-glamorous problem of how you move trucks, trains, ships and planes without burning fossil fuels. She spent six years inside the hydrogen industry at the gas company Air Liquide and advised the World Energy Council before she ever wrote an investment cheque, and that order matters, because it means she reads a renewable-gas project as an engineer first and a financier second.

Alena Fargere then left industry to join the founding team of the SWEN Impact Fund for Transition, which she calls the first European fund dedicated to renewable gases, meaning biogas and hydrogen rather than the solar and wind everyone already finances. When she came on the show in 2022 the first fund was €175 million and the team had deployed it in two and a half years instead of the planned five, backing more than a hundred production and distribution sites across Europe, and they were already raising a successor roughly twice the size. Her own investment thesis is refreshingly unromantic about money: "There is no lack of capital on the markets today. The main challenge is to redirect the existing capital into new technologies."

Alena Fargere's whole pitch for hydrogen is that it is a system fix, not a single-sector bet. Most of us, she admits herself, get sector-tunnelled and chase a local optimum that is not the global one, whereas hydrogen can touch production, storage, heavy transport, industrial heat and even aviation fuel all at once. The catch she is honest about is cost: clean hydrogen still carries a green premium, the extra you pay for the clean version, and her view is that the job of public money is to close that gap early so that learning-by-doing and scale can drive the price down the way they already did for solar, which went from three times the price of grid electricity to parity in country after country.

Alena Fargere recorded her episode as the optimist's half of a hydrogen debate, the practitioner answering the week's skeptic, and her best line was the rebuttal itself. Faced with the charge that hydrogen is pushed by the fossil-fuel industry and by what critics call its "useful idiots," she did not dodge it, she flipped it. And underneath the cleantech economics there is a very human reason she keeps going, which she gave away in the rapid-fire round and which is, quietly, my favourite thing she said:

“I prefer to be a useful idiot acting rather than a very intelligent pessimist not doing a thing.”

Alena Fargere has since moved on from SWEN Capital Partners, where she was a Principal until 2023, and now puts that same engineer-then-financier instinct to work as an independent investor and as a board director at Lhyfe, the listed green-hydrogen producer she had backed and praised on the show, where she chairs the social and environmental responsibility committee. If you want the wider water-and-energy world she operates in, my Leviathan database tracks the companies and the money around it.

On (don’t) Waste Water

The episode Alena Fargere recorded as a guest on the show, the second part of a three-part series on whether the hydrogen economy is real:

The company

SWEN Impact Fund for Transition (SWIFT)
SWEN Impact Fund for Transition is the renewable-gas strategy Alena Fargere helped found at SWEN Capital Partners, the first European fund dedicated to financing biogas and hydrogen production and distribution rather than solar and wind. It backs anaerobic-digestion and green-hydrogen plants across Europe to decarbonize the heat, industry and heavy transport that electricity alone cannot reach, and has kept scaling: later vintages run into the hundreds of millions of euros.
Founded 2019 · Paris, France

Frequently asked

Who is Alena Fargere?
Alena Fargere is an energy-transition investor and hydrogen expert based in Paris. She co-founded the SWEN Impact Fund for Transition, the first European fund dedicated to financing renewable gases, holds a PhD in economics from École Polytechnique, and now sits on the board of listed green-hydrogen producer Lhyfe.
What is the SWEN Impact Fund for Transition?
SWEN Impact Fund for Transition, or SWIFT, is the renewable-gas fund Alena Fargere helped found at SWEN Capital Partners. It was the first European fund dedicated to financing biogas and hydrogen plants. The first vintage raised €175 million and backed more than a hundred sites across Europe.
How did Alena Fargere get into hydrogen investing?
Alena Fargere trained as an engineer and economist, earning a PhD at École Polytechnique on hydrogen for transport. She spent six years in the hydrogen industry at Air Liquide and advised the World Energy Council before joining the founding team of a renewable-gas fund, reading projects as an engineer first.
What is Alena Fargere's view on the hydrogen economy?
Alena Fargere argues hydrogen is a system-wide fix, not a single-sector bet, able to touch heavy transport, industrial heat and storage at once. She believes capital is not scarce; the real job is redirecting it and using public money to close the green premium until scale drives clean-hydrogen costs down.
Is Alena Fargere the same as the SWEN fund or Lhyfe?
No. Alena Fargere is the person; SWEN Impact Fund for Transition is the renewable-gas fund she co-founded, and Lhyfe is the listed green-hydrogen producer whose board she sits on. She was a Principal at SWEN Capital Partners until 2023 and now invests and advises independently.
Where can I listen to Alena Fargere?
Alena Fargere was a guest on the (don’t) Waste Water podcast in 2022, in the episode "Is the Hydrogen Economy actually an Astounding Investment Opportunity?", the second part of a three-part series on hydrogen. You can listen, watch or read it through the links above.