US residential energy storage firm FranklinWH raises US$25 million

August 30, 2023
LinkedIn
Twitter
Reddit
Facebook
Email

California-based FranklinWH Energy Storage has secured a US$25 million Series B to scale up its residential battery and energy management software offering in the US and Puerto Rico.

The financing round was led by venture capital firm Particle Future and will allow FranklinWH to expand its R&D, optimise its supply chain and scale up its operations and sales networks.

“The best days of renewable energy are ahead of us,” said Gary Lam, Co-Founder of FranklinWH. “Battery storage systems are positioned to expand in the energy market because they are strong alternatives to the vulnerable, outdated and expensive energy grid. This funding from Particle Future will help FranklinWH advance home battery technology and make renewable energy options more accessible.”

The company highlighted that the US Department of Energy (DOE) estimates that two-thirds of the country has been at risk of a power outage this summer, and that this combined with an increasingly complex energy landscape and federal incentives are paving the way for the ‘age of the battery’.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

FranklinWH’s Franklin Home Power solution comprises a residential battery, a power control system and an app allowing for smart energy management.

“Solar panels had their day in the sun over the past few years, but homeowners are becoming interested in pairing solar with other energy efficient technologies to balance a home’s energy supply,” said Vincent Ambrose, Chief Commercial Officer at FranklinWH.

The company highlighting Puerto Rico as an addressable market likely stems from policies after Hurricane Maria in 2017 which are seeking to increase the amount of distributed energy resources (DERs) and virtual power plants (VPPs) into which those DERs can be aggregated, to shore up the grid’s resilience.

There was good news for the home battery and VPP space this week in the mainland US too, with VPPs or incentives programmes using home batteries launched or extended in Texas, California and Vermont.

24 March 2026
Dallas, Texas
The Energy Storage Summit USA is the only place where you are guaranteed to meet all the most important investors, developers, IPPs, RTOs and ISOs, policymakers, utilities, energy buyers, service providers, consultancies and technology providers in one room, to ensure that your deals get done as efficiently as possible. Book your ticket today to join us in 2026!

Read Next

December 17, 2025
In an upcoming conversation with Energy-Storage.news Premium and Optimisation platform provider Ascend Analytics, CEO Dr. Gary Dorris PhD, discusses the ‘roller coaster’ revenues of the Electric Reliability Council of Texas (ERCOT) market.
December 17, 2025
According to the Q4 2025 US Energy Storage Monitor from Wood Mackenzie Power & Renewables and the American Clean Power Association (ACP), 2025 energy storage installations surpassed 2024 capacity.
December 16, 2025
In this edition of the Energy-Storage.news US news roundup, EticaAG partners with Shell on battery immersion tech, Pacific Northwest National Laboratory begins utility-scale battery testing, and ON.Energy announces a transformer supply agreement.
December 16, 2025
 Utility Georgia Power has reached an agreement with the Public Interest Advocacy (PIA) staff of the Georgia Public Service Commission (PSC), that, if approved, will help lower energy costs and meet electricity demand in the state.
Premium
December 16, 2025
Calibrant’s BESS for a new data centre in Oregon, US, was hailed as the first of its kind, but what are the details beyond the headline? We caught up with Calibrant’s CCO to discuss the practical, commercial and technical specifics of the project.