Investing in
Clean Energy for
a Sustainable Future
Mission of the Foundation
Mission of the Foundation
The Strioga Family Foundation was established in 2025 with a mission to help prevent global climate change through responsible, sustainable investment. Backed by a EUR 100 million endowment, the Foundation deploys capital into projects, businesses, and start-ups that deliver measurable climate, energy, and resilience outcomes.
The Strioga Family Foundation was established in 2025 with a mission to help prevent global climate change through responsible, sustainable investment. Backed by a EUR 100 million endowment, the Foundation deploys capital into projects, businesses, and start-ups that deliver measurable climate, energy, and resilience outcomes.
We partner with leading developers, businesses, and founders in renewable energy, climate technology, and energy efficiency sectors. In addition to capital, we bring more than 30 years of sector experience to support disciplined execution and scalable impact.
We partner with leading developers, businesses, and founders in renewable energy, climate technology, and energy efficiency sectors. In addition to capital, we bring more than 30 years of sector experience to support disciplined execution and scalable impact.
We partner with leading developers, businesses, and founders in renewable energy, climate technology, and energy efficiency sectors. In addition to capital, we bring more than 30 years of sector experience to support disciplined execution and scalable impact.
The Foundation executes its investment activities through E Energy Invest, UAB, the Lithuania-based investment vehicle, managed by a team of experienced energy - transition professionals.
The Foundation executes its investment activities through E Energy Invest, UAB, the Lithuania-based investment vehicle, managed by a team of experienced energy - transition professionals.
Founder's Vision
"The Strioga Family Foundation has evolved from a deep conviction: that the greatest measure of success is the legacy we leave behind. With my personal commitment of EUR 100 million, I have chosen to stand with future generations in the defining clean challenge of our time - climate change.
I believe wealth is not merely a privilege; it is a responsibility - a responsibility to act with courage and determination, and to invest in solutions that will shape the world decades from now.
The transition to renewable energy, greater energy efficiency, and breakthrough climate innovation is not only an environmental necessity; it is an opportunity to reimagine how we live, power our economies, and protect our planet. Achieving energy independence and ending reliance on fossil fuels will require bold systemic change, visionary partnerships, and sustained effort.
Yet the transformation does not begin in institutions alone. It begins with people - with the daily choices we make, the standards we set, and the example we lead.
Real change is built through consistent action - sustained, principled, and long-term.
Through the Strioga Family Foundation, we are committed to accelerating that change by building a resilient and sustainable future for generations to come."
Virginijus Strioga
What We Do
What We Do
Minority equity for project financing
We provide minority equity investments for development and construction of renewable energy, battery energy storage (BESS) and circular-economy projects. Typical commitments range from EUR 5 million to EUR 25 million.
Minority equity for project financing
We provide minority equity investments for development and construction of renewable energy, battery energy storage (BESS) and circular-economy projects. Typical commitments range from EUR 5 million to EUR 25 million.
Minority equity for co-development
We engage with developers at an early stage - often through joint ventures - to support renewable energy platforms from origination through development, construction, and operations. Typical commitments range from EUR 5 million to EUR 25 million.
Start-up funding
We provide capital to start-ups supporting the development and scaling of energy storage technologies, hybridization and optimization software, virtual power plants and grid flexibility services, e-mobility and renewable energy development platforms. Typical ticket sizes range from EUR 0.5 million to EUR 5 million.
Junior debt
We offer tailored junior debt and mezzanine solutions to renewable energy and BESS projects approaching final investment decision (FID), complementing senior debt and sponsor equity to support timely execution.
Bridge financing
We provide bridge financing for projects and companies developing projects and technologies that mitigate climate change.
Green bonds
We invest in green bonds issued by corporates, utilities, and other entities whose use of proceeds is aligned with our mission.
Contact us via email
Our Investments
Our Investments
Glassenbury Battery Storage (UK)
In June 2025, we invested in the augmentation of the Glassenbury A & B battery storage sites in Kent, UK—expanding their total energy capacity to 110MWh with a 2.2-hour average duration. The investment was made in partnership with Gresham House Energy Storage Fund, UK’s largest fund investing in utility-scale battery energy storage systems.
FFNEV BESS (ES, PT, RO)
In September 2025, the Foundation investment vehicle E E energy Invest has acquired a 49% stake in FFNEV BESS, a 2.4 GW battery storage development platform spanning Spain, Portugal, and Romania, to accelerate projects to Ready-to-Build status. This partnership aligns capital with a top-tier Spanish renewables developer FF Ventures, backed by Octopus Energy partners. The platform will look for further opportunities to add new projects to the current pipeline and explore the possibility of expanding into additional markets in the future. FF Ventures | Octopus Energy
Bridge financing for Vilnius BESS project (LT)
In summer of 2025, the Foundation provided short-term bridge financing for the first
private stand-alone battery project in Lithuania.
Long term junior debt for E energija renewables portfolio (LT)
In Q1 2025, the Foundation provided long-term junior financing for the construction of
portfolio of renewable energy projects in Lithuania combining 56 MW of wind, 14 MW of
PV and 65 MW of BESS.
InBalance grid bonds (LT and PL)
In February 2025, we invested in a 12-months bond of InBalance Grid, a start-up focused on digital grid-balancing and electric vehicle charging infrastructure.
The investment supports the scale-up of flexible energy and charging solutions in the Baltics
and Poland.
Muehlhan Holding bonds (DE)
In February 2026, we invested in 4-year Muehlhan bonds, supporting a company with
expansion of capabilities in wind turbine services across coating, maintenance, and
industrial access solutions. The investment reflects our conviction that the green energy
transition depends on the full value chain - not only on generation assets, but also on
the service infrastructure that keeps the projects efficient, reliable, and operating over
the long term.
Glassenbury Battery Storage (UK)
In June 2025, we invested in the augmentation of the Glassenbury A & B battery storage sites in Kent, UK—expanding their total energy capacity to 110MWh with a 2.2-hour average duration. The investment was made in partnership with Gresham House Energy Storage Fund, UK’s largest fund investing in utility-scale battery energy storage systems.
FFNEV BESS (ES, PT, RO)
In September 2025, the Foundation investment vehicle E E energy Invest has acquired a 49% stake in FFNEV BESS, a 2.4 GW battery storage development platform spanning Spain, Portugal, and Romania, to accelerate projects to Ready-to-Build status. This partnership aligns capital with a top-tier Spanish renewables developer FF Ventures, backed by Octopus Energy partners. The platform will look for further opportunities to add new projects to the current pipeline and explore the possibility of expanding into additional markets in the future. FF Ventures | Octopus Energy
Bridge financing for Vilnius BESS project (LT)
In summer of 2025, the Foundation provided short-term bridge financing for the first private stand-alone battery project in Lithuania.
Long term junior debt for E energija renewables portfolio (LT)
In Q1 2025, the Foundation provided long-term junior financing for the construction of portfolio of renewable energy projects in Lithuania combining 56 MW of wind, 14 MW of PV and 65 MW of BESS.
InBalance grid bonds (LT and PL)
In February 2025, we invested in a 12-months bond of InBalance Grid, a start-up focused on digital grid-balancing and electric vehicle charging infrastructure.
The investment supports the scale-up of flexible energy and charging solutions in the Baltics
and Poland.
InBalance
Muehlhan Holding bonds (DE)
In February 2026, we invested in 4-year Muehlhan bonds, supporting a company with expansion of capabilities in wind turbine services across coating, maintenance, and industrial access solutions. The investment reflects our conviction that the green energy transition depends on the full value chain - not only on generation assets, but also on the service infrastructure that keeps the projects efficient, reliable, and operating over the long term.
Muehlhan
Glassenbury Battery Storage (UK)
In June 2025, we invested in the augmentation of the Glassenbury A & B battery storage sites in Kent, UK—expanding their total energy capacity to 110MWh with a 2.2-hour average duration. The investment was made in partnership with Gresham House Energy Storage Fund, UK’s largest fund investing in utility-scale battery energy storage systems.
FFNEV BESS (ES, PT, RO)
In September 2025, the Foundation investment vehicle E E energy Invest has acquired a 49% stake in FFNEV BESS, a 2.4 GW battery storage development platform spanning Spain, Portugal, and Romania, to accelerate projects to Ready-to-Build status. This partnership aligns capital with a top-tier Spanish renewables developer FF Ventures, backed by Octopus Energy partners. The platform will look for further opportunities to add new projects to the current pipeline and explore the possibility of expanding into additional markets in the future. FF Ventures | Octopus Energy
Bridge financing for Vilnius BESS project (LT)
In summer of 2025, the Foundation provided short-term bridge financing for the first private stand-alone battery project in Lithuania.
Long term junior debt for E energija renewables portfolio (LT)
In Q1 2025, the Foundation provided long-term junior financing for the construction of portfolio of renewable energy projects in Lithuania combining 56 MW of wind, 14 MW of PV and 65 MW of BESS.
InBalance grid bonds (LT and PL)
In February 2025, we invested in a 12-months bond of InBalance Grid, a start-up focused on digital grid-balancing and electric vehicle charging infrastructure.
The investment supports the scale-up of flexible energy and charging solutions in the Baltics
and Poland.
InBalance
Muehlhan Holding bonds (DE)
In February 2026, we invested in 4-year Muehlhan bonds, supporting a company with expansion of capabilities in wind turbine services across coating, maintenance, and industrial access solutions. The investment reflects our conviction that the green energy transition depends on the full value chain - not only on generation assets, but also on the service infrastructure that keeps the projects efficient, reliable, and operating over the long term.
Muehlhan
Strioga Family Foundation
E-Energy Invest
Founder's Vision
"The Strioga Family Foundation has evolved from a deep conviction: that the greatest measure of success is the legacy we leave behind. With my personal commitment of EUR 100 million, I have chosen to stand with future generations in the defining clean challenge of our time - climate change.
I believe wealth is not merely a privilege; it is a responsibility - a responsibility to act with courage and determination, and to invest in solutions that will shape the world decades from now.
The transition to renewable energy, greater energy efficiency, and breakthrough climate innovation is not only an environmental necessity; it is an opportunity to reimagine how we live, power our economies, and protect our planet. Achieving energy independence and ending reliance on fossil fuels will require bold systemic change, visionary partnerships, and sustained effort.
Yet the transformation does not begin in institutions alone. It begins with people - with the daily choices we make, the standards we set, and the example we lead.
Real change is built through consistent action - sustained, principled, and long-term.
Through the Strioga Family Foundation, we are committed to accelerating that change by building a resilient and sustainable future for generations to come."
Virginijus Strioga