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storage systems are positioned to expand in the energy market because they are strong alternatives to the vulnerable, outdated and expensive energy grid.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!
15 September 2026
San Diego, USA
You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.

Read Next

March 3, 2026
Oregon-based utility company Portland General Electric has finalised agreements for more than 1,000MW of new renewable energy and BESS projects.
March 3, 2026
The Governing Board of the Puerto Rico Electric Power Authority (PREPA) has approved renewables developer Polaris Renewable Energy’s battery energy storage system (BESS) standard offer (SO1) agreement.
March 3, 2026
Australia’s Cheaper Home Batteries Program has officially surpassed 250,000 installations, delivering 6.3GWh of distributed energy storage.
March 2, 2026
Zinc hybrid cathode battery and storage system maker Eos Energy reasserted its vision for 2026 and beyond in its Q4 and full-year 2025 financial results.
February 26, 2026
Energy storage developer and subsidiary of Canadian Solar, Recurrent Energy, has sold its 200MWh Fort Duncan battery energy storage system (BESS) project, located in Texas, US, to developer Hunt Energy Network.