Germany's dsb raises €10M Series A to speed up climate-neutral home renovations
What's the deal? Deutsche Sanierungsberatung (dsb), a Berlin-based climate tech startup that helps make homes climate-neutral, has raised a Series A round of more than €10 million. Simon CapitalDealroom has a profile for this one. Try Dealroom → and VERBUND X VenturesDealroom has a profile for this one. Try Dealroom → co-led, with existing backers IBB VenturesDealroom has a profile for this one. Try Dealroom →, Vireo VenturesDealroom has a profile for this one. Try Dealroom →, and Atlantic Food LabsDealroom has a profile for this one. Try Dealroom → returning.
What's the endgame? Founded in 2024, dsb guides German homeowners through energy renovations — from independent energy consulting and subsidy processing to implementation by vetted trades businesses. Certified consultants collect building data on site to create a digital twin, which forms the basis for a multi-year renovation roadmap. The company says its process cuts the time homeowners need by roughly 80%.
Why now? dsb says building operations account for about 30% of Germany's CO2 emissions — roughly 112 million tons a year — mostly from heating with fossil gas and oil, citing the Federal Environment Agency. It notes that around 80% of Germany's 15 million single-family homes are still not energy-efficient.
The round marks a sharp step-up from the €3.6 million seed raised in February 2025. dsb reports it has tripled in size since 2024, now serving over 10,000 customers, and forecasts revenue above €15 million for 2026.
What's the money for? dsb plans to expand its platform and its network of 300 local trades businesses, launch a proprietary electricity tariff, and enter the B2B market.
"dsb solves a big, very concrete problem: millions of property owners don't know when or how to renovate, while the trades sector is chronically overloaded and inefficient at customer acquisition," said Nico Heinz, principal at co-lead investor Simon Capital.
The signal: The raise lands as capital concentrates in AI while green tech draws less attention. "Our round shows that strong growth and a working business model can still win over investors, even outside the hype," said CFO and co-founder Niclas Kern.
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