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Solar storage

What are the most effective and efficient ways to store solar energy? With technology advancing rapidly, there’s a wide range of systems and products to choose from. What should prospective users keep in mind when it comes to planning and costs? Read on to learn more.

Symmetry as management principle: inside a CATL production workshop

First BESS integrator ranking confirms the established order

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The cell giant CATL lands behind Sungrow and Tesla in the analysts' first assessment of storage integrators, which weights corporate substance such as R&D, supply chains and finances above product specifications.

A CATL BESS site and Yanco's likely blueprint

Australia – fifth large-scale BESS close for ACEnergy

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BW ESS takes over the 250 MW/1,000 MWh Yanco project, which will be capable of powering around 430,000 homes for four hours once operational in 2028.

James Xie is managing director of SAJ Electric

SAJ Electric: innovative storage solutions for residential & C&I

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PV Guided Tours: The HS5 all-in-one offers a complete way to power private homes. It brings together solar, battery storage, a wallbox and backup power in a single unit, with an AI-based energy manager orchestrating the individual components.

Ambivalent UK weather and the 600 MWh argument for transmission-connected storage

UK – Eku Energy makes transmission storage debut with Didcot BESS

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The global storage specialist has acquired a 300 MW / 600 MWh battery project in Oxfordshire, connecting to the recently upgraded Didcot substation ahead of a planned 2028 commissioning.

Investment models, storage and a firm commitment to green

Greece – Eighth Athens forum greets a sector nearing 24.5 GW

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With 50 GW of licensed projects awaiting connection terms and dealmaking in full swing, the country's largest renewables event returns for its eighth edition on 20 and 21 October.

ONE is a storage system for large C&I and utilities

LONGi: a look inside the ONE storage platform

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PV Guided Tours: LONGi ONE is an integrated storage platform for C&I applications, featuring intelligent energy management and a TÜV-certified early warning system at cell level. Watch the video to find out why storage is becoming a key component of modern energy infrastructure.

The hardware behind CATL's Tier 1 rankings

CATL takes double top spot in S&P Global storage rankings

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Both the battery cell and system supplier categories go to the Chinese manufacturer in S&P Global Energy's 2026 Tier 1 Cleantech list, as first-half storage revenue climbs 87.54 percent year on year.

Solar flair – the Stouby hybrid site at golden hour, batteries included

Denmark – 152 MWh online as EW hybridises two existing parks

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Two hybrid sites at Stouby and Agersted bring European Energy's grid-connected storage in Denmark to more than 375 MWh across 96.75 MW.

Alan Greenshields (right) from ESS discusses sustainable long-term storage technology.

Solar Investors Guide #4 – Long-term storage with iron flow technology

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Podcast: The Energy Center from ESS Inc. in Oregon is an iron flow storage system offering 1.16 MWh of capacity and 174 kW of maximum charging power. Housed in a single container, the modular unit is designed for a range of commercial and grid applications. Alan Greenshields, Director EMEA at ESS, discusses long-duration storage and the role of redox flow technology using sustainable materials such as iron, salt and water.

Dr Tim Juan (left) is CTO of Ampace

Ampace: strategies and innovation for the European storage market

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CEO Talk: The European energy storage market is growing dynamically, and so are the demands on profitability, safety and system integration. We find out how Ampace is positioning itself in this environment, the role Europe plays for the company, and which advances and technologies are set to shape the market next.

Atmoce is entering the C&I business with its new Atmoce storage

Atmoce: new BattBank C&I storage system

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PV Guided Tours: Atmoce is introducing a 25-year warranty on its residential storage system and unveiling intelligent module-level energy management that supports automated snow clearing of solar panels. On the storage side, the portfolio is being expanded with the C&I BattBank, the first AC-coupled, stackable commercial storage system designed for low-voltage operation.

Solar panels meet English hedgerows at Maisemore, Gloucestershire

UK – European Energy secures £58.1m for Cornish solar-plus-storage

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Danske Bank is financing the construction of Indian Queens, a hybrid renewable asset combining a 68 MW solar park with a 47.5 MW / 95 MWh battery system. Commercial operations are expected in 2027, with both generation and storage sharing a single grid connection.

Solar in the Italian Alps – some way from the substation, but part of the same equation

Italy – Axpo backs Zelestra's 830 MWh project in Friuli-Venezia Giulia

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Zelestra has signed a ten-year tolling agreement with Axpo for a 207 MW storage project in northeastern Italy, its first BESS development in the country and one that would make it Italy's second-largest holder of authorised battery storage capacity.

Rows of storage capacity at Immingham, among the largest three-hour batteries in the country once live

UK – Immingham battery secures financing, decade-long revenue floor

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Econergy has closed its second UK storage deal with Santander and EDF this year, underpinning what will become one of Britain's largest batteries operating above two hours.

The Solis PrimePower units that will cut the electricity bill and carbon footprint

UK – Solis announces UK arrival with NHS battery project

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The Robert Jones and Agnes Hunt Orthopaedic Hospital has switched on a 600 kWh battery system paired with rooftop solar, delivered by ZLC Energy using six Solis PrimePower units. The setup is expected to offset around 75 percent of the hospital's electricity use.

Different boxes, same queue: batteries lined up for a shared grid slot

Greece – battery projects with shared grid connections near 500 MW mark

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Connection terms for co-located battery storage schemes sharing a single grid access point are expected to reach 500 MW shortly, accounting for half of the capacity cap set out under Greece's latest regulatory framework.

Philipp Rasche is Managing Director of ENEO

Solar's next act: from output to integration

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Storage is no longer in question. What matters now is the system it forms with generation, controllable loads and e-mobility, argues Philipp Rasche of ENEO.

Gregor Kuschmann (right) presents the new Battery vision 2

Solarwatt: from home to market – complete systems for buildings

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PV Guided Tours: Homes are increasingly becoming energy producers. Sector coupling within the building is growing in importance and even electric vehicles are now part of the picture. Gregor Kuschmann and Robert Pawlik of Solarwatt explain which components and solutions make energy independence possible and how buildings are playing a new role in the energy market.

SolarEdge's Nexis stack in the corner, quietly doing the household's heavy lifting

Two markets and scaling: Nexis storage reaches 80 kWh

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Fresh from its German introduction – and reportedly brisk uptake – the three-phase platform is now available in Austria and Switzerland, pairing a 20 kW hybrid inverter with clip-together 5 kWh battery blocks.