Funding

Moonwatt funding news – Amsterdam-based Moonwatt Raises $8.3Million in Seed Funding

Mar 7, 2025 | By Kailee Rainse

Moonwatt funding news - Amsterdam-based Moonwatt Raises $8.3Million in Seed Funding

Moonwatt, an Amsterdam-based company that creates solar-only energy storage systems using sodium-ion batteries, has raised $8.3M in a Seed funding round.

SUMMARY

  • Moonwatt, an Amsterdam-based company that creates solar-only energy storage systems using sodium-ion batteries, has raised $8.3M in a Seed funding round.
  • Moonwatt, led by CEO Zukui Hu, develops a battery storage system that works with solar power plants.

The round is co-led by Daphni and LEA Partners, with support from Founders Future, AFI Ventures (by Ventech), Kima Ventures, and other business angels and customers.

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The company plans to use the funds to launch a pilot installation of its storage technology in Europe next year, with commercial launches expected by 2027.

Co-founder and chief commercial officer, Valentin Rota said, “Basically, what we allow our partner to do is to double their return,” “So in AAA [credit-rating] country, I would say an average PV [photovoltaic] asset is around, let’s say 8 per cent to 12 per cent return — IRR — and we will bring the asset up to around 20 per cent.”

Moonwatt offers a storage system that can boost a solar plant’s capacity by up to 80%. Plants using this system could potentially double their return on investment (IRR), according to Tech Crunch.

Rota said, “We started to see this application first starting on what we call microgrids, so usually a small grid-resistant generator, But as the cost of batteries went down and the cost of storage went down actually those applications started to arrive in bigger countries on bigger grids, and it’s really driven by the fundamental pace of solar.”

About Moonwatt

Moonwatt, led by CEO Zukui Hu, develops a battery storage system that works with solar power plants. The system manages energy changes using custom battery enclosures, inverter electronics for grid connection, and software to control storage and distribution.

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