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Energy Storage

Germany slashes VAT for residential PV to 0%

The German parliament has approved a new package of tax breaks for rooftop PV, including a value-added tax exemption for PV systems up to 30 kW in size.

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Regulator could prove solar’s NEMesis

The latest attempt by the California Public Utilities Commission – CPUC, the US state’s regulator – to reform net metering rules, seems to again be solely motivated by the desire to kill off rooftop PV, as energy economist Ahmad Faruqui reported in the latest issue of pv magazine.

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Novel sodium-sulfur battery for renewables storage

A Chinese-Australian research group has created a new sodium-sulfur battery that purportedly provides four times the energy capacity of lithium-ion batteries. They say it is far cheaper to produce and offers the potential to dramatically reduce energy storage costs.

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Finnish mine to host 75 MW/530 MWh underground pumped hydro facility

Suomen Energiavarasto Oy has secured €26.3 million ($27.5 million) from the Finnish government to build an underground pumped hydro project at a former zinc and copper mine.

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Monolithic perovskite-silicon tandem solar cells for water splitting

Researchers in the Netherlands have designed a water-splitting system with an electrochemical cell and a 25%-efficient tandem perovskite-silicon solar cell. It can reportedly achieve a solar-to-hydrogen efficiency rating of more than 21%.

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Canadian company unveils portable off-grid solar, battery kit

SEI Logistics has developed a portable, folding solar panel kit with batteries. The system is designed to work in harsh, remote environments.

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The Hydrogen Stream: Global renewables capacity for hydrogen to surge by 2027, says IEA

The International Energy Agency says that it expects the use of renewables to support global hydrogen production to surge over the next five years. The Netherlands and Denmark, meanwhile, have revealed plans to expand electrolysis capacity.

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PV-powered residential air-source heat pump with PCM thermal storage

A UK research group has proposed the combination of solar-powered heat pumps and thermal storage based on phase-change materials for residential applications. They said such a system could facilitate cost savings of up to 39%.

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US research institute proposes compensation for storage

Pacific Northwest National Lab (PNNL) researchers have developed a new framework to compensate energy storage as a dual-use asset.

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Online tool provides answers to complexities of home solar, storage in Australia

The Australian PV Institute (APVI) and the University of New South Wales (UNSW) have launched a free version of SunSPOT, a tool for tailored guidance on ideal solar and battery setups.

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