Author

Tristan Rayner pv magazine editor

Tristan Rayner pv magazine editor

Tristan Rayner

After studying Electrical Engineering and working in the field in control systems, Tristan turned his attention to editorial roles. Prior to joining pv magazine in 2020, and ESS News in 2024 in Berlin, he was Managing Editor and Founding Editor of tech and other publications in Australia.

With years of experience in news, tech, and energy, he has also contributed to a host of publications and podcasts. He also works on YouTube channel The Friday Checkout, among other roles.

Articles written by Tristan Rayner

Manufacturing

NextStar’s Canadian battery plant shifts gears to stationary storage The plant has added an LFP line and yet will only produce stationary storage cells and batteries once production commences in December.

Nov 11, 2025

Projects & Applications

‘Catastrophic failure’ at Waratah Super Battery in Australia A key infrastructure asset at one of the world's biggest batteries has reduced operations and delayed completion for more than six months, with few details made public regarding the critical asset.

Nov 10, 2025

Auctions

Philippines expands fourth auction with storage winning almost 5 GWh The Philippines’ Department of Energy has finalized its fourth green energy auction, which specified technical standards for storage that will see close to 5 GWh installed.

Tristan Rayner, Patrick Jowett

Nov 10, 2025

Finance

US financing: Investors back battery expansion with new BrightNight and Plus Power deals The deal for the new project in Arizona comes from a lending consortium, while Plus Power secures new funding to expand its New England footprint.

Nov 10, 2025

Industry

What insurers want battery developers to understand right now There's progress in battery energy storage system (BESS) risk maturity, but insurers are warning of supply chain problems, while OEMs are tightening their treatment of warranties.

Nov 06, 2025

Sodium-ion batteries

Unigrid scales sodium-ion battery production tenfold via Asian contract manufacturing San Diego firm expands global manufacturing capacity tenfold to 100 MWh per year, with 1 GWh targeted in 2026.

Oct 29, 2025

Projects & Applications

Energy Vault buys up 300 MWh battery in Texas, projects $350 million in total revenue The SOSA Energy Center battery energy storage system (BESS) is almost ready to build, and Energy Vault has snapped it up in advance of a Notice to Proceed in Texas.

Oct 24, 2025

Technologies

Alsym Energy launches Na-Series, claiming safe, low-cost sodium-ion battery storage The Massachusetts-based startup says its new battery is non-flammable, non-toxic, and uses non-FEOC (Foreign Entity of Concern) materials, aiming for a lower levelized cost of storage (LCOS). The technical specs provide some highlights as well.

Oct 22, 2025

Finance

Repono acquires 404 MWh ready-to-build battery project in Romania The ready-to-build (RtB) project adds to the Swedish company's portfolio, with a chance for a faster return-on-investment with significant smaller battery penetration in the market.

Oct 21, 2025

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