ESS firm Polarium raises US$50 million, sees ‘three must-win battles’

LinkedIn
Twitter
Reddit
Facebook
Email

Sweden-headquartered ESS manufacturer Polarium has raised SEK562 million (US$48.3 million) and outlined its “three must-win battles” to become a leading player in the telecoms and commercial and industrial markets.

The funding for the energy storage system (ESS) manufacturer came primarily from existing shareholders, namely investor Vargas Holding and pension funds AMF and Alecta.

It will allow Polarium to “continue to deliver on our strategy, operational priorities and ultimately enable us to become a leading sustainable, fully integrated energy solutions provider,” a spokesperson said.

The company was founded in 2015 and is mainly targeting the telecommunications, commercial and industrial sectors, and has production facilities in Mexico, South Africa and Vietnam assembling ESS units using a range of lithium-ion battery chemistries.

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

It hit a US$1 billion-plus ‘unicorn’ valuation last year with an investment from AMF, as reported by Energy-Storage.news at the time.

To become a leading, sustainable integrated provider of energy solutions the company sees three must-win battles, a spokesperson explained.

“Establish a leading position as the preferred supplier for telecom customers in Europe, North America and Africa,” said the spokesperson. “Continue to expand our channel partnership ecosystem to ensure wide exposure to differentiated geographies and customer segments.”

“Prove the value add of our energy optimisation system across regions,” added the spokesperson. “If successful we believe that Polarium in the future will become an asset management company optimising the way our clients use energy.’

The telecommunications segment is becoming an attractive area for ESS projects in order to ensure backup power across complicated infrastructure networks. Telecoms firms in Finland and Germany have recently sought to use energy storage across their networks while another telecoms-focused ESS firm, Caban, completed a fundraise in January similar in size to Polarium’s recent one.

Asked what sets the company’s technology apart from its competitors, the spokesperson for Polarium added: “Polarium’s technology stands out due to its cutting-edge lithium-ion battery technology, modular design, comprehensive product range, energy efficiency, proprietary software integration, and versatility in applications. This combination positions Polarium as a leader in the energy storage and optimisation industry.”

Read Next

September 1, 2026
We hear from Nikhil Koppaka, senior commercial manager for BESS owner-operator BW ESS on the big opportunities and challenges in Germany’s grid-scale energy storage market.
August 31, 2026
Developers who buy or flip battery storage projects mid-life risk inheriting decommissioning liabilities they had not properly accounted for.
August 27, 2026
AEMO has published its 2026 ESOO, finding a clearer pathway to maintaining a reliable electricity supply across the NEM in the coming decade.
August 26, 2026
US independent power producers (IPPs) Swift Current Energy and Avantus have secured financing for their pipelines and projects, respectively.
August 26, 2026
DC-coupled solar-plus-storage projects can reduce the time needed for grid connection approval compared with AC-coupled designs.