BlackRock, Temasek Decarbonization Fund Invests $35M in ConnectDER for Residential Energy Transition

  • Market Expansion: $35M funding will scale ConnectDER’s manufacturing, product innovation, and market reach, driving affordability and accessibility.
  • Innovative Technology: Launch of the IslandDER adapter simplifies grid integration, enabling whole-home backup and resiliency for distributed energy resources.
  • Barrier Removal: ConnectDER’s solutions cut costs by up to 90% compared to traditional upgrades, accelerating clean energy adoption in 60M U.S. homes.

ConnectDER, a leader in home energy technology, has raised $35 million in Series D funding to advance its electrification solutions. The funding, led by Decarbonization Partners—a joint venture of BlackRock and Temasek—alongside new investor MassMutual Ventures and six existing backers, will fuel market expansion and innovation.

We are excited to partner with ConnectDER, which has built an elegant solution that solves a major adoption pain point for customers, enabling and accelerating affordable home electrification in North America, said Dr. Meghan Sharp, Global Head and Chief Investment Officer at Decarbonization Partners.

Dr. Meghan Sharp, Global Head and Chief Investment Officer at Decarbonization Partners

IslandDER: Transforming Home Energy

ConnectDER’s next-gen product, the IslandDER, integrates solar, battery storage, and electric vehicles with the utility grid. It provides whole-home backup power, enabling homes to disconnect and reconnect seamlessly during outages or peak usage.

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Our forthcoming IslandDER enables homes to harness stored energy from solar systems, batteries, or EVs, delivering innovative backup power and resilience at a highly competitive cost, said Ivo Steklac, CEO of ConnectDER.

Ivo Steklac, CEO of ConnectDER

Tackling Barriers to Adoption

With 60 million U.S. homes lacking capacity for clean energy solutions due to high upgrade costs, ConnectDER’s products offer a solution. Installed in minutes, they cost just 10% of traditional service panel upgrades, significantly lowering the barrier to adoption.

Chris Lundell, interim CEO of Blue Raven Solar, praised the impact: ConnectDER’s adapters streamline installations, reduce complexity, and enhance the homeowner experience.”

Accelerating Growth

The Series D funding will support:

  • Scaling manufacturing to meet demand.
  • Expanding markets nationwide.
  • Advancing innovation in home energy solutions.

With over 25,000 adapters already in use across 20+ states, ConnectDER’s mission is clear: to deliver affordable, resilient energy solutions that benefit homeowners, the grid, and the environment.

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