Battery Industry Weekly — Week 30

Jul 20 – Jul 26, 2026 24 min read

This week in batteries: wärtsilä completes delivery of 1,038 quantum units to 1,400mwh wooreen bess in australia, german startup launches high-voltage sodium-ion battery for residential applications, idemitsu plans 864 mwh vanadium flow battery at australian coal mine site.

BESS

Wärtsilä completes delivery of 1,038 Quantum units to 1,400MWh Wooreen BESS in Australia

All 1,038 Wärtsilä Quantum battery units have been delivered and installed at the 1.4GWh Wooreen BESS in Victoria, Australia.

RESIDENTIAL

German startup launches high-voltage sodium-ion battery for residential applications

Revolta has introduced a high-voltage residential sodium-ion battery storage system with modular capacity from 2 kWh to 20 kWh.

The system features a 450 V DC nominal voltage, over 95% efficiency, 105

BESS

Idemitsu plans 864 MWh vanadium flow battery at Australian coal mine site

Idemitsu Australia is proposing a 108 MW vanadium flow battery with eight hours of storage at a former coal mine site in New South Wales.

The post Idemitsu plans 864 MWh vanadium flow battery at Austr

BESS

Sodium-ion BESS: CATL in 2GWh Eastern Europe collaboration, ESS Inc signs LOI for 500MWh of US deployments

ESS Tech Inc is deploying sodium-ion BESS in the US with Juniper Energy, while CATL deploys its sodium-ion technology in Eastern Europe with Solarpro.

BESS

South Australia’s Lunio Energy brings 20MWh grid-scale battery storage system online

South Australia battery storage developer Lunio Energy has energised its first grid-scale BESS at Strathalbyn and started trading in the NEM.

BESS

California batteries missing out on revenue due to suboptimal bidding strategies, Gridmatic analysis finds

Battery energy storage systems (BESS) operating in California\'s grid left approximately US$98 million on the table due to suboptimal bidding strategies, according to a new analysis from Gridmatic.

BESS

Waaree, India’s biggest PV module supplier, opens 5.15GWh battery storage assembly plant

A subsidiary of Indian renewable energy equipment and component manufacturer Waaree Energies has opened a battery energy storage system (BESS) enclosure factory.

BESS

ib vogt wins approval for 480MWh battery storage site in Australia’s Wagga Wagga Special Activation Precinct

German solar and storage developer ib vogt has received state planning approval for the 120MW/480MWh Wagga North battery energy storage system (BESS) in New South Wales, Australia.

BESS

Alfen and CATL agree 5GWh sodium-ion BESS partnership in Europe

System integrator Alfen and battery company CATL have struck a 5GWh partnership for sodium-ion BESS deployments in Europe.

BESS

Chinese battery that could offer alternative to lithium cells passes key test - Yahoo Finance UK

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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.