Battery Industry Weekly — Week 29

Jul 13 – Jul 19, 2026 24 min read

This week in batteries: hydrogen-iron flow batteries: how elestor’s tech works, prosalia and edp hybridise solar pv/wind projects with batteries in portugal, spain, invinity sells 43mwh long-duration flow battery system to us midwest rural electric cooperative.

RESEARCH

Hydrogen-iron flow batteries: How Elestor’s tech works

Elestor claims its hydrogen-iron flow battery delivers 75%+ round-trip efficiency, a 20-25 year lifespan, and 15€/kWh capex for long-duration storage.

MARINE

Prosalia and EDP hybridise solar PV/wind projects with batteries in Portugal, Spain

IPP Prosalia has commissioned a 15MW/60MWh battery storage system at a solar PV plant in Portugal, while power group EDP has added one to a hybrid wind and solar project in Spain.

BESS

Invinity sells 43MWh long-duration flow battery system to US Midwest rural electric cooperative

Flow battery company Invinity Energy Systems has sold 43MWh of battery systems to utility Dairyland Power Cooperative for deployment across long duration energy storage (LDES) projects in the US Midwe

BESS

Japan: Tokyo Gas enters offtake for 200MWh Fukushima BESS, Eku Energy nears completion of first project

Japanese utility Tokyo Gas has entered into a long-term offtake agreement for a 49.7MW/202.1MWh battery storage project in Fukushima Prefecture.

BESS

South Africa: Plentify aggregates 2.7GWh of Deye home battery systems into virtual power plant

Home energy management company Plentify will put over 160,000 connected home battery storage systems in South Africa into a virtual power plant (VPP).

MARINE

European Commission approves scheme to support 370MWh of battery storage in Slovenia

The European Commission (EC) has approved a financial support scheme to accelerate the deployment of battery storage technologies in Slovenia.

MANUFACTURING

Samsung SDI on track with US LFP cell production, expects demand to outstrip production

Samsung SDI is on track to begin production of lithium iron phosphate (LFP) battery cells in the US in the third quarter of this year.

BESS

Greenvolt inaugurates 200MW/800MWh capacity market-contracted BESS in Poland

Greenvolt Power has inaugurated the 200MW Turośń Kościelna Battery Energy Storage Facility in Poland, which energy trader Entrix will optimise.

BESS

Central & Eastern Europe: UK’s Alcemi buys 2.3GWh Romania projects, Slovakia’s biggest BESS brought online

Alcemi, developer of some of the UK’s biggest projects, has entered the Romanian battery storage market, while Slovakia’s biggest project to date has gone into operation.

EV demand in Europe, BESS in the US drive LG Energy Solution’s return to profit in Q2

LG Energy Solution (LG ES) posted a profitable second quarter this year, with investments in battery storage in the US and EV cell production in Europe paying off.

The Week in Context

Three themes worth tracking from this week's news:

Scale is the new normal. Battery deployment continues to grow across every segment — EVs, grid storage, and marine — making batteries a core infrastructure technology rather than a niche market.
Chemistry diversity is accelerating. LFP, solid-state, sodium-ion, and silicon-anode chemistries are all progressing simultaneously, each targeting different cost and performance tradeoffs.
Regulation is reshaping supply chains. EU battery passport requirements and domestic manufacturing incentives are forcing companies to rethink sourcing, documentation, and compliance timelines.

What to Watch Next Week

Continued updates on solid-state battery commercialization timelines
EU Battery Regulation implementation guidance from the European Commission
New grid-scale BESS project commissioning and capacity milestone reports
Lithium and critical mineral pricing trends affecting battery economics
Sodium-ion and next-generation chemistry production scaling announcements

Sources

Frequently Asked Questions

What is the Battery Industry Weekly?

A short editorial digest covering the most important battery industry news each week — EV batteries, grid-scale storage, regulation, manufacturing, and research.

How are stories selected?

The generator fetches RSS feeds from trusted sources, deduplicates similar stories, scores them by relevance, and selects the top stories for the week.

When is the digest published?

A new edition is generated every Friday covering the current week.

Disclaimer

This article summarizes publicly available news and analysis. BatteryCalculators.com does not guarantee the accuracy of third-party information. Always verify facts with primary sources before making engineering or procurement decisions. This content is provided for informational purposes only and does not constitute professional engineering advice.