Solas Capital has leveraged its experience in energy-as-a-service business models to deploy capital across a range of building energy efficiency projects.

Buildings account for 40% of EU energy consumption and 36% of emissions, yet traditional infrastructure finance has failed to unlock investment at scale, it says.

Since early 2022, the European specialist investment advisory firm has executed 17 financing agreements with a wide range of Energy Services Companies (ESCOs). To date, 3,681 individual projects have been financed across eight EU countries, spanning self-consumption rooftop solar PV, residential and industrial heat pumps, LED lighting retrofits, industrial heat optimisation, and HVAC upgrades.

The company reports these investments are delivering lifetime outcomes of 4,294 GWh energy reduction, 1,171 kilotonnes of carbon dioxide equivalent avoided, and €398.5 million ($461.5 million) in energy-bill savings, whilst supporting 1,649 green jobs.

According to Solas, impact governance is embedded throughout the investment cycle with KPIs defined at investment and monitored through reporting cycles by an investment committee.

Since early 2025, portfolio and impact data have been centrally managed in AtomInvest, the firm's bespoke portfolio management system. This platform connects financial performance, operational metrics, and impact outcomes in a single auditable flow. The system enables real-time monitoring and provides LP dashboards aligned with recognised impact categories and Sustainable Development Goals linkages.

Judges praised the firm's niche focus on an underserved and underfunded market sector, creating a pipeline for innovation and risk while promoting sustainability management for green buildings.