Japan’s Orix Corporation invests in flow battery start-up UniEnergy Technologies’ expans

December 24, 2015
LinkedIn
Twitter
Reddit
Facebook
Email

Orix Corporation has already become involved in PV markets in Japan and elsewhere. Image: Orix Corporation.
Japanese financial services company Orix Corporation has invested in UniEnergy Technologies (UET), a US company delivering large-scale energy storage based around its own vanadium flow batteries.

UET, which claimed to have deployed North America and Europe’s largest capacity flow battery in June when it installed a 1MW / 4MWh system in Washington, said ORIX was among participants in a US$25 million funding round.

Orix has been an investor and participant in PV markets in Japan and elsewhere, including recent involvement in a US$132 million drive by banks to develop Fukushima Prefecture’s biggest PV plant. Orix also made its first move into the US renewable energy tax credit financing market earlier this year when it joined US Bancorp in a conglomerate to help SolarCity develop up to 2,500 systems for the residential and commercial markets.

UET and Orix did not reveal how much of the US$25 million came from the financial services company. The funding will be used to scale up UET’s production, business development and sales activities in North America and elsewhere, with the company already having executed projects for utilities and other customers in regional markets including California. The two companies said they will partner “closely” in Japan and elsewhere to offer energy storage procurement models in the utility, commercial, industrial and microgrid segments.

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

UET developed its vanadium redox flow battery when the company’s two founders were researchers at Pacific Northwest National Laboratory, supported by the government Department of Energy. Orix said that it acquired preferred voting shares through its investment into UET which gave it 10% voting rights in UET’s parent company.

In a statement this week, Orix hailed advantages of flow batteries including their long duration and expected lifetime, while also championing the specific advantages of UET’s technologies, which Orix said represented a successful reduction in the space required for installation.

Read Next

Premium
January 22, 2026
Saudi Arabia and the UAE have emerged as two of the world’s most prominent energy storage markets, with mega-scale projects announced and moved forward at a staggering pace over the last two years. But what does the next phase look like?
January 19, 2026
FranklinWH and ConnectDER have had their respective battery and electric meter technologies enrolled into programmes in Arizona expected to accelerate the take-up of home batteries for virtual power plants (VPPs).
January 16, 2026
Duke Energy, Elevate Renewables, and Fluence Energy, along with BrightNight and Cordelio Power, are advancing BESS projects across the BESS.
January 15, 2026
ASL has launched a consultation on a new Hybrid Generation LTESA product alongside its 2026 NSW Consumer Trustee Investment Priorities.
January 15, 2026
While coal and gas power plants grapple with cost increases, Australia’s battery storage sector delivers a different story, with costs plummeting across all durations.