Granarium raises €1M+ to commercialise renewable supercapacitors for grid stability

2026-06-09 · Source: Tech.eu - Tech.eu · Field: Energy & Utilities — Renewable Energy Systems, Energy Storage & Grid Technology, Emerging Energy Technologies · Depth: Intermediate, quick

Summary

Granarium Technologies, a deeptech energy startup spun out from VTT, has secured over €1 million in Pre-Seed funding led by BSV Ventures and Beamline, with participation from FiBAN, EstBAN, and LatBAN. The company is industrializing patented renewable supercapacitors designed to enhance grid stability and support industrial applications. This technology utilizes a nanocellulose-based material platform that binds biocarbon structures, enabling up to 80% lower production capital expenditure. Granarium's supercapacitors upcycle waste materials to create 100% renewable energy storage, acting as a fast-response layer for grid balancing, frequency response, and industrial power quality. The funding will facilitate industrialization, with pilot customers secured and initial commercial production of up to 50 units per year expected to begin within six months. UBS forecasts global energy storage demand to grow by approximately 40% year over year in 2026, highlighting the market need.

Key takeaway

For investors evaluating deeptech energy solutions, Granarium's successful Pre-Seed round and nanocellulose-based supercapacitor technology signal a significant opportunity. You should consider the potential for up to 80% lower production capital expenditure and the strategic advantage of using locally sourced, waste-derived materials. This approach addresses increasing grid volatility and aligns with Europe's goals for resilient energy infrastructure, offering a scalable solution for fast-response power storage in a rapidly growing market.

Key insights

Granarium's renewable supercapacitors offer a scalable, cost-effective solution for grid stability using locally sourced, waste-derived materials.

Principles

• Energy storage is becoming core grid infrastructure.
• Local raw materials enable sustainable, inexpensive production.
• Supercapacitors complement batteries for short-duration power.

Method

Granarium's method involves binding biocarbon structures with nanocellulose-based materials to create supercapacitors, upcycling waste for 100% renewable energy storage.

In practice

• Manage peak loads and improve power quality.
• Balance grids and provide frequency response.
• Support process industries and continuous production.

Topics

• Renewable Supercapacitors
• Grid Stability
• Energy Storage
• Nanocellulose Technology
• Deeptech Funding
• Industrial Applications

Best for: Investor, Entrepreneur, Consultant

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Editorial summary, takeaway, and curation by AIssential. Original article published by Tech.eu - Tech.eu.