sun.store, a B2B digital marketplace specializing in solar and energy storage components, raised €6 million (~$7 million) in seed funding. The investment was co-led by Contrarian Ventures, Market One Capital, and Movens Capital, with additional backing from FJ Labs, Push Ventures, and Aidiom.
sun.store facilitates the buying and selling of photovoltaic components across Europe, aiming to streamline access to essential solar and storage solutions for businesses.
The capital infusion will enable the company to fast-track product development. Additionally, the startup aims to bolster its merchant support by simplifying seller onboarding processes, expanding technical support services, and enhancing product reliability.
To support these initiatives, the company is also set to expand its workforce, strengthening its commercial, product, and operational teams in its Warsaw hub and other locations.
“We’ve been in the solar trenches long enough to know how fragmented and frustrating procurement can be. sun.store was built to give professionals the clarity they need in an increasingly complex market. The traction we’ve achieved in under two years shows how urgently this solution is needed,” said Co-founder Bartosz Majewski.
According to Mercom’s 1H 2025 Solar Funding and M&A report, VC funding activity decreased 7% year-over-year, with $2.5 billion raised in 32 deals in 1H 2025 compared to $2.7 billion from 29 deals in the first half of 2024. In Q2 2025, global VC funding activity declined 50% YoY, with $1.1 billion raised across 18 deals compared to $2.2 billion in 16 deals in Q2 2024.
In August, One Stop Warehouse, a solar wholesaler and distributor, secured A$8.5 million (~$5.5 million) in strategic funding from SparkEdge Capital, a venture capital firm based in Shanghai with a focus on the energy and technology sectors. The funding will support the company in its next phase of international growth in key solar markets, including the U.S., Mexico, Spain, and Romania.
