Solar storage

As European balancing markets near saturation, the business model for battery storage is undergoing a fundamental shift. Securing long-term returns now demands that optimisers adopt sophisticated spot trading strategies, argues Stephan Lehrke of Second Foundation.

New analysis finds Croatia may require up to 1,620 MW of battery storage to support renewable expansion and shows how needs vary across different deployment scenarios.

A study by the Hrvoje Požar Energy Institute and the University of Zagreb finds battery storage cuts system costs by up to 15 percent, supporting payback within around ten years.

Large-scale storage systems are gaining ground across Europe, driven by growing demand for grid stabilisation and peak load shifting. Italy, Great Britain and Germany are leading the charge. Download our latest free e-paper now.

Hithium’s modular Power Flexsso, offered in 3.125 MWh and 6.25 MWh (four-hour) configurations, weighs under 26 tons per unit, allowing standard road transport and simplifying deployment across regions with logistical constraints.

PV Guided Tours: SAX Power offers an AC storage system that operates without a battery inverter. It is also a multi-talent – suitable for both new solar systems and retrofits. Is this storage system really as simple as the provider promises? Watch the video to find out.

HTW Berlin’s latest annual study of residential PV battery systems finds new efficiency highs among leading products, but persistent gaps between top and lower-ranked systems.

PV Guided Tours: Huawei FusionSolar is unveiling its new Luna2000 utility-scale battery storage system with a capacity of five MWh. The current 4.5 MWh systems have already received the Prime safety certificate from TÜV Rheinland.

PV Guided Tours: Fenecon presents the Industrial XL with 1.5 MW and four MWh in a new container format for large-scale projects, alongside a flexible power pack for SMEs and the updated Commercial 92 featuring an innovative split-tower design.

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.

Energy costs shape competitiveness in both global and local markets. As fossil and nuclear prices continue to rise, solar and wind are no longer marginal technologies but increasingly represent the smart money in power generation.

With a 3 GW pipeline of solar and battery projects, Metlen is strengthening its position in Italy through new storage projects, tolling agreements and partnerships with industrial energy consumers.

PV Guided Tours: The integrated Power Store sytem from Denios combines a C&I battery unit with a safety container, designed to protect against thermal runaway while enabling tailored design and fast amortisation. Watch the video to learn more.

PV on Tour: Sigenergy presents its commercial storage system, SigenStack. The modular solution incorporates AI and is paired with an external hybrid inverter delivering between 50 and 125 kilowatts, depending on configuration. As with the SigenStor residential system, SigenStack features a sophisticated safety concept.

PV Guided Tours: The system supplies three-phase backup power and utilises an intelligent EMS. The focus is clearly on safety and efficiency – including for the new, hybrid-cooled Luna2000-215kWh battery storage system for C&I. It has been awarded the highest safety certificate by TÜV Rheinland.

The recently published Land Use Framework for England sets out long-term allocation principles, but Eku Energy’s Dan Burrows warns that without storage and grid investment, rising solar output risks being curtailed.

Chinese battery firm Hithium is weighing a near-term investment in Navarra to build energy storage systems, with plans outlined by founder Jeff Wu during talks with Prime Minister Pedro Sánchez in Madrid.

PV on Tour – The Evercore series from Solis integrates inverter, battery and energy management in a single unit, offering 100 kW power and 120 kWh capacity. The larger version delivers up to 261 kWh, paired with a hybrid inverter rated at 50 or 60 kW.

PV Guided Tours: Intelligent systems are replacing standalone components and AI now manages storage systems, wall boxes and energy flows to make the most of solar power. It’s not science fiction, it’s already here. Still sceptical? Prepare to be surprised!

The new three-phase solar and storage platform combines LFP batteries, quick installation and integrated energy management to support flexible use of on-site generation and dynamic tariffs.

As Europe’s strained energy grid puts business growth at risk, innovative companies are seizing the moment, as Emmanuel Trivin, Managing Director Continental Europe at Wewise, explains.

Entry into BloombergNEF’s Tier 1 storage ranking signals growing C&I demand and stricter bankability criteria, including deployment in projects of at least 10 MW or 10 MWh over the past two years.

Croatia’s government announced new funding programmes for solar, heat pumps and battery storage as researchers unveiled a comprehensive study on battery storage locations at the SolarFlex conference in Zagreb.

Intilion launches modular large-scale storage for industry. Trinasolar introduces G3 modules for rooftop and ground-mounted. Huawei FusionSolar’s Emma becomes Smart Assistant, and Salzstrom debuts sodium-ion storage for industry. These are this week’s standout products.

Vienna-based Salzstrom is bringing its Salt Industry Line sodium-ion storage system to the European industrial market, using battery cells that contain neither lithium nor cobalt.