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Maxwell Power secures a $750M investment from Fairtide Partners to expand battery storage and solar power projects in high-energy-cost states.

PRIVATEJun 01, 2026

Amount Raised

$750 Million

Round Type

Venture

San DiegoEnergyRenewable EnergySolar

Investors

Fairtide Partners

Description

Maxwell Power received a $750M commitment from Fairtide Partners. The funding will be used to finance battery storage and solar power projects and to strengthen partnerships. The company aims to expand into new state markets facing high energy costs. Led by Dustin Dunaway, Maxwell has invested over $1 billion since 2018 to aid customers in saving on energy costs.

Quick answer

Maxwell Power raised $750 Million in a funding round, dated June 1, 2026. Investors: Fairtide Partners. Maxwell Power is based in San Diego, California, United States.

How much did Maxwell Power raise?
Maxwell Power raised $750 Million in a funding round on June 1, 2026.
Who invested in Maxwell Power?
Fairtide Partners is named as investors in this round.
What does Maxwell Power do?
Maxwell Power is a San Diego-based provider of battery storage and solar power project financing solutions.
Where is Maxwell Power based and how big is it?
Maxwell Power is based in San Diego, California, United States.

Source: Fundz verified event record.

Who else raised in Energy and Renewable Energy around the same time

Companies in the same sectors as Maxwell Power that raised within 45 days of this round, from Fundz verified event records.

  • NextGO Epi raised $2.3M (Pre-Seed) on July 14, 2026.
  • NexiGO raised $2.3M (Pre-Seed) on July 14, 2026.
  • Bohr Energie raised $11M (Series A) on July 10, 2026.
  • Karamtara Engineering raised $7.9M on July 7, 2026.
  • United Solar Holding raised $1.6B (Funding Round) on July 6, 2026.
  • Joulent raised $1.8B (Corporate Round) on July 1, 2026.

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Company Information

Company

Maxwell Power

Location

San Diego, California, United States

About

Maxwell Power is a San Diego-based provider of battery storage and solar power project financing solutions. The company develops and deploys solar and battery storage systems under long-term savings contracts. They monitor and maintain the infrastructure for residential and small commercial customers. Since 2018, Maxwell has invested over $1 billion to help customers save an estimated $200 million.

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Maxwell Power raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

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