Funding and M&A Roundup: Branch Energy Raises $33 Million

AMPIN Energy secures $100 million investment from Norfund

September 23, 2026

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From: Mercom Capital Group

Branch Energy, a distributed energy company that provides battery storage systems to commercial buildings, has raised $33 million in a Series B funding round led by Piva Capital and Clean Energy Ventures. Active Impact Investments and Whitecap Venture Partners participated in the round, along with existing investors Prelude Ventures, Zero Infinity Partners, and Inovia Capital. According to the release, the company is now expanding its services from Texas to Illinois, among other markets.

Renewable energy company AMPIN Energy Transition has raised up to $100 million (~₹9.58 billion) from Norfund, the Norwegian government’s investment fund for developing countries. The funding will support the expansion of AMPIN’s manufacturing capabilities, commercial and industrial projects, utility-scale projects, and its energy transition value chain business. Following the investment, AMPIN said its total equity capital raised will reach nearly $1 billion (~₹95.81 billion) and facilitate more than $4 billion (~₹383.25 billion) in capital deployment.

Planted, a company that develops automated systems for solar project deployment, raised $31.8 million to expand its robotic fleet and scale solar project deployment. Piva Capital and RA Capital Management Planetary Health co-led the round, with participation from Breakthrough Energy Ventures, Gigascale Capital, Google, and Khosla Ventures. Planted’s solution combines project planning software, terrain-following solar arrays, energy storage, and field robotics.

Form Energy, an iron-air-based battery systems provider for multi-day energy storage, has closed a $270 million credit facility to support manufacturing scale-up and working capital requirements for its iron-air battery systems. The financing comprises a revolving credit facility and a tax credit advance facility. The tax credit advance facility allows the company to borrow against tax credits generated from producing eligible components under Section 45X Advanced Manufacturing Production Credit.

Lithium Argentina, a producer of lithium carbonate for lithium-ion batteries, has closed a $180 million strategic investment from Ganfeng Lithium Group through the issuance of a six-year unsecured convertible note. The note carries an annual coupon of 4% and matures six years from issuance. It can be converted into Lithium Argentina common shares at $12.50 per share, according to terms the company announced in August of this year.

For reports and trackers on funding and M&A transactions in solar, energy storage, and smart grid sectors, click here.

Read last week’s funding roundup.

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