€800k · Other round · Deeptech · Berlin, Germany
Berlin-based Nanolope has raised an €800k pre-seed round backed by IBB Ventures through its B# fund, alongside business angels and industry experts from energy, real estate and materials technology. The company says the capital will support production scale-up, initial pilot projects and team growth.
Building surfaces become passive thermal stores
Nanolope develops ceiling panels that turn interior surfaces into passive heat and cold stores for existing buildings. The panels use form-stabilised phase-change materials: the material absorbs thermal energy as it changes phase, then releases it later as temperatures fall. Nanolope says the system works without electricity, refrigerants or moving components and can be installed while a building remains occupied.
That makes the commercial proposition a retrofit rather than a full renovation. Housing companies and operators of hotels, offices and cafés can add thermal storage to rooms where replacing the heating or cooling system would be disruptive or uneconomic. Nanolope says its current panel material is 85% plant-based, around 90% recyclable and can store roughly 45 kWh of thermal energy per cubic metre. Those performance figures are company claims and still need to be demonstrated across different buildings and operating conditions.
The financing therefore connects two stages of the business. Scaling production has to make each panel consistent enough for construction use, while pilots have to show that the material’s laboratory properties translate into lower peak loads, steadier indoor temperatures and useful savings for property owners. A successful pilot is not just a technical test: it must produce evidence that asset managers, installers and building engineers can use in a purchasing decision.
Pilots have to produce repeatable buying evidence
Nanolope was founded in Berlin in 2025 by Felix Marske, Eric Matthes and Dominik Schreiber. IBB Ventures said the team’s patented storage materials could set new standards in construction, while its B# fund targets early deep-tech companies with tickets of €100k to €400k. Private co-investors in the round add sector knowledge alongside that public-backed capital.
The next constraint is repeatability. Nanolope needs manufacturing processes that preserve the phase-change material’s performance at higher volumes, installation methods that work across existing building types and measurements that customers can compare with conventional insulation or active cooling. The €800k round gives the company room to build those proofs before it approaches a larger seed financing.
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Daniel Betts, Christian Hernandez Gallardo and Blue Frontier · 8 October 2026. The article explains why climate hardware must turn pilots, field performance and manufacturing consistency into repeatable customer trust. Added 13 October 2026.
Sources checked:
IBB Ventures announcement · Nanolope company and product site · Nanolope company press release · Tech.eu Funding Explorer
Date note: IBB Ventures dates its announcement 20 August 2026; Nanolope’s website lists its company press release on 27 August. This brief uses the earlier investor announcement date.
Image: Nanolope GmbH, via the company press release.
