Germany-based VREY, a solar software and smart metering solutions provider, has raised €3.3 million ($3.8 million) in a seed funding round to scale its operations and technology.

The round was led by Rubio Impact Ventures, with participation from High-Tech Gründerfonds (HTGF) and Kopa Ventures.

The proceeds will be used to expand VREY’s team and further develop its platform, which enables property owners to deploy solar in multi-family buildings and supply electricity directly to tenants without taking on the regulatory role of an energy supplier. For installations, they work directly with their customers’ preferred installation partners.

“Shared roofs have long been one of the ‘impossible-to-go-solar’ segments in the residential market. VREY has built a rapidly scalable solution in which everybody wins: tenants reduce their energy bills, property owners make more money without the liabilities of an energy supplier, and everyone benefits from reduced carbon emissions. What convinced us ​​to lead this round was not just the model, but the speed and clarity with which Julius and Cedric have executed it. We look forward to being part of what comes next,” says Helmer Schukken, Partner at Rubio Impact Ventures.

VREY provides an end-to-end solution combining certified smart metering infrastructure and handles all billing via its software: measuring each tenant’s share of solar output and invoicing them directly.

Founded in 2024, VREY claims to have a three-digit number of projects across all 16 German federal states, serving private landlords, housing cooperatives, real estate developers, and large property owners. The platform also supports integration with battery storage, heat pumps, and electric vehicle charging systems, while working with local installation partners.

According to Mercom’s recently released Annual and Q4 2025 Smart Grid Funding and M&A report, Global VC and private equity funding in the solar sector in 2025 came to $3.5 billion in 75 deals, 22% lower than the $4.5 billion raised in 60 deals in 2024. There were eight VC funding deals of $100 million or more in 2025.

In March 2026, Artemis (formerly Monalee), an AI-based software platform for solar and distributed energy companies, closed $6 million in funding. The company also announced the appointment of former Shell Ventures investor Alexander Urban as Chief Financial Officer.