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Private Equity FundPuts its own capital into companiesLAST VERIFIED Oct 2026 · 8 SOURCES

Qualitas Energy

Also known as Q-Energy, Q-Energy Private Equity, S.G.E.I.C., S.A.

Madrid-based renewable-energy and energy-transition infrastructure manager; Q-Energy V closed at c.€2.4bn (2023), Fund VI targets €3.25bn; >€3.5bn AUM (2025).

Not to be confused with Qualitas Funds (Madrid lower mid-market fund-of-funds manager owned by Ridgepost Capital).

HEADQUARTERS
Madrid, Spain
FOUNDED
2006
AUM
€3.5B (2025)
OUTSIDE CAPITAL
Yes
TEAM LISTED
2 people

Focus

STAGES
GrowthBuyout
SECTORS
Climate & Energy
ASSET MIX
Private equityPrivate credit
GEOGRAPHY
EuropeSpainGermanyUnited KingdomPolandItalyUnited StatesChile

Overview

Qualitas Energy, founded in 2006 and led by Iñigo Olaguíbel (executive chairman) and Oscar Pérez (CEO), invests in and develops solar, wind, hydro, battery storage and renewable-gas assets and platforms. Its regulated manager, Q-Energy Private Equity, S.G.E.I.C., S.A. (CNMV reg. no. 147, 28/06/2019), runs the Q-Energy/Qualitas Energy funds; the firm has raised about €5bn across six vehicles and co-investments (Fotowatio/FRV, Vela Energy, Qualitas Energy III, IV, V and Credit Fund I). Q-Energy V closed in November 2023 at c.€2.4bn with institutional investors from over 30 countries, and Qualitas Energy Fund VI was launched in late 2025 with a €3.25bn target. US-listed AMG agreed in May 2025 to take a minority stake, with management keeping majority ownership.

Investment thesis

Acquisition and development of small and mid-size renewable assets, portfolios and companies, plus larger platform deals, scaling diversified platforms in Spain, Germany, the UK, Poland and Chile and investing selectively in the US and Italy; Europe remains the main focus, with up to a third of commitments allowed in OECD countries outside the EU/UK; technologies include solar, wind, hydro, batteries and biomethane; private credit alongside.

PORTFOLIO (4)

  • Heelstone Renewable Energy
    Climate & Energy · since 2024
  • DunoAir Windpark Planung (German onshore wind development business)
    Climate & Energy · since 2023
  • Acorn Bioenergy
    Climate & Energy
  • Lambert Bioenergy
    Climate & Energy

People

  • Iñigo Olaguíbel
    Managing Partner and Executive Chairman · source
  • Oscar Pérez
    Managing Partner and CEO · source

Links

Frequently asked questions

Qualitas Energy is a private equity fund based in Madrid, Spain, founded in 2006.

Yes. Qualitas Energy invests its own capital in private companies.

Qualitas Energy invests at Growth and Buyout stages in Climate & Energy.

Key people at Qualitas Energy include Iñigo Olaguíbel (Managing Partner and Executive Chairman) and Oscar Pérez (Managing Partner and CEO).

Qualitas Energy's investments include Heelstone Renewable Energy, DunoAir Windpark Planung (German onshore wind development business), Acorn Bioenergy and Lambert Bioenergy.

The most recent publicly reported investment by Qualitas Energy is Heelstone Renewable Energy (Acquisition (definitive agreement; seller Ares Management)), announced in Jan 2024.

Yes. Qualitas Energy manages capital from outside investors.