Climate Impact Investing for Institutional Investors
Energy Transition Infrastructure Debt for Institutional Investors
Project finance solutions for energy efficiency to decarbonise European buildings and industry – the underfunded pillar of the energy transition
Europe's Pure-Play Energy Efficiency Infrastructure Specialist
Solas Capital is the European investment specialist dedicated exclusively to energy efficiency and behind-the-meter projects. We provide institutional investors access to the most underfunded segment of the energy transition – building and industrial decarbonisation – through structured project finance solutions which are insulated from electricity market price volatility.
Our mission is to channel capital to this underfunded area to achieve positive climate impact by reducing energy demand in buildings, industry and public infrastructure through retrofits and technical upgrades.
40% of all energy within the EU is consumed in buildings
Improving the efficiency of existing buildings reduce energy consumption, supporting climate targets, energy security and affordability for building owners. Energy efficiency is deemed the most cost-effective way of cutting emissions and is central to the energy transition.
Read more about our investments under case studies.
Why Invest in Energy Efficiency?
At Solas Capital, we understand both the funding needs of energy efficiency and self-consumption solar projects and the requirements of institutional investors, enabling us to bridge the funding gap between investors and projects.
Through our expertise and network, we support institutional investors in achieving fixed income-type returns and positive climate impact while strengthening Europe’s energy security through investments in building and industrial decarbonisation assets.
Latest News from Solas Capital
The European Investment Bank commits EUR 60 million to Solas Sustainable Energy Fund II advised by Solas Capital.
The commitment scales the existing energy efficiency financing partnership between EIB and Solas Capital and will channel much needed institutional capital towards Energy-as-a-Service projects delivered by project developers across several EU countries.
CASE STUDIES
Award-Winning Retrofit: Transforming Slovenia's Public Buildings
- Energy Savings: 934,500 kWh p.a.
- Emission Reduction: 489,900 kg CO2 p.a.
- Energy Cost Savings: 280,800 € p.a.
Resalta, a Slovenian energy service company, used financing provided by the Solas Sustainable Energy Fund to implement a deep building retrofit in a primary school and health center in Slovenia, including roof and facade insulation, new windows and doors, renovation of heating system, LED lighting, HVAC and thermostatic valves). The customers pay a monthly fee throughout the project tenor for the services and energy cost reduction. At the end of the contract, the benefits to the entire savings are transferred to the public entity.
CASE STUDIES
Heating Optimisation of 19 Story Apartment Building in Frankfurt
- Energy Savings: 250,000 kWh p.a.
- Emission Reduction: 59,700 kg CO2 p.a.
- Energy Cost Savings: 36,700 € p.a.
Paul Tech AG installs software-operated hydraulic balancing systems in the water and heating systems in multi-family residential buildings in Germany.
The installation in Frankfurt resulted in an increase to Energy Efficiency Class D from F.
CASE STUDIES
Rooftop PV Installation on Dublin Warehouse
- Energy Produced: 45,600 kWh p.a.
- Emission Reduction: 8,600 kg CO2 p.a.
- Energy Cost Savings: 5,800€
Urban Volt installed self-consumption solar PV and LED lights and entered a contract with an industrial energy consumer, who pays a fixed monthly service payment throughout the lifetime of the contract. The energy consumer had zero upfront expense for the project installation.
Experts in Energy Efficiency Financing
Founded in 2017 by Sebastian Carneiro and Paul Kearney, our team now spans 14 motivated and passionate energy experts with long-standing experiencing in structuring project finance for Energy-as-a-Service businesses.
Our Impact to date
Impacts are measured across the investment period (numbers per 30.06.2026)
News and Insights
Zurich, 11th of February 2026 – Today in Luxembourg, Solas Capital AG has signed a €60
