1Komma5 Grad Hits $1.35 Billion Valuation in New Funding Round

German cleantech company 1Komma5 Grad has been valued at USD 1.35 billion (EUR 1.2 billion) in a new funding round, according to a report by Renewables Now. The figure makes the Hamburg-based firm one of the few European climate-tech businesses to cross the billion-dollar mark.

The valuation lands after a difficult stretch for cleantech fundraising. Rising interest rates have compressed valuations across the sector since 2022, and several once-feted European energy startups have downsized or stalled. A USD 1.35 billion price tag in this environment signals that at least one group of investors still sees outsized growth in home electrification.

What does 1Komma5 Grad actually do?

The company operates in the cleantech space, building a business around the electrification of households — the market for solar panels, heat pumps, battery storage and the software that ties them together. Its model targets the growing number of European homeowners who want to cut both energy bills and carbon emissions at the same time.

That market has real scale behind it. Germany and the wider EU are pushing building electrification through subsidy programmes and tightening emissions rules for heating in particular. Demand for integrated home-energy systems, the segment 1Komma5 Grad addresses, has grown steadily as gas prices remain elevated compared with pre-2022 levels.

The caveat: the Renewables Now report confirms the valuation but not the size of the round, the identity of the lead investor, or the composition of the cap table. Those details matter. A large valuation on a small cheque tells a different story than a heavily subscribed round with new institutional backing.

Why does the valuation matter now?

A USD 1.35 billion valuation places 1Komma5 Grad in unicorn territory — private companies worth at least USD 1 billion. European climate unicorns remain a short list, and each new entry is read as a signal of where late-stage capital is willing to commit.

For the company itself, the valuation strengthens its hand in three ways:

• Expansion capital. A higher valuation supports acquisitions of regional installers and sales operations, a common growth route in fragmented home-energy markets.
• Talent retention. Employee equity is worth more on paper, which helps in a sector competing with software firms for engineers.
• Future fundraising. A strong mark now eases the path to the next round — or to an eventual listing.

Each of those benefits depends on the valuation holding. Paper marks in private markets can sit above what public-market investors would pay, as several stalled cleantech IPOs have shown over the past two years.

What is not being said?

The report does not disclose revenue figures, growth rates or the path to profitability. Valuation alone says little about unit economics in a business that combines hardware installation with long-term service contracts. Installers carry heavy working-capital needs, and margin pressure in the solar-hardware supply chain has squeezed competitors across Europe.

Nor is there confirmation on whether existing investors led the round or new money set the price. A round led by insiders at a flat or modestly higher valuation reads very differently from one backed by a fresh external investor at USD 1.35 billion.

In plain terms: the number is impressive, but the evidence behind it is thin in this report.

What comes next?

The funding gives 1Komma5 Grad the balance sheet to keep consolidating the European home-electrification market while smaller rivals struggle with financing costs. Whether the valuation proves durable will depend on the next set of disclosed financials — and on whether European households keep buying at the pace investors have priced in.