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Energy Storage

Photovoltaics and geothermal heat pumps for domestic hot water heating

According to a new study from LUT University, domestic water heating costs may be reduced by combining rooftop PV with geothermal heat pumps. Scientists developed a control method to minimize these costs by taking advantage of cheap spot market electricity and maximized PV power generation, as well as considering heat demand, PV generation forecasts, and heat pump efficiency.

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UK and Norwegian governments back solar-plus-storage in Mozambique

A solar array planned in the Tetereane district of Cuamba has been described by its developer as the nation’s first independent power project to feature utility scale storage.

Hydrogen-based storage system for residential applications

The system is based on a power-to-gas hydrogen technology and is intended to enable one and two-family homes to have an independent power supply throughout the year.

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The Hydrogen Stream: US government wants to reduce green hydrogen cost by 80% to $1 per kilogram in one decade

Furthermore, Swiss energy company Axpo and Swedish-Swiss electrical equipment giant ABB committed to combining their technologies and skills for several projects related to green hydrogen in Italy and Germany’s gas transmission system operators Gascade and Ontras announced a plan to set up a platform for the hydrogen industry in eastern Germany, with an initial grid to cover 475 kilometers of pipelines.

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Greece to tender 700 MW of battery storage this year

Greece’s energy storage sector is heating up, with the government confirming plans to publish an energy storage policy framework and hold tenders for 700 MW of battery storage.

Maldives launch tender for 40 MW/40 MWh of storage

The government of the archipelago is tendering the deployment of two big batteries, with capacities of 24 MW/24 MWh and 16 MW/16 MWh, respectively, to store renewable energy for 22 islands.

Green Cell unveils off-grid inverters for small residential buildings

Poland-based Green Cell is offering two versions of its new inverter, with power outputs of 1 kW and 3 kW. The inverters feature an efficiency of 90% and are recommended for small buildings such as cottages or year-round homes.

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Universal electricity access by 2030 remains a distant dream

Energy efficiency, electrification of heating and transport, and the provision of clean cooking facilities are all going in the wrong direction as the Covid crisis deprived millions in sub-Saharan Africa of electricity use, according to a report by the IEA, IRENA, WHO, World Bank and UN Statistics Division.

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Cathode discovery ‘opens up new pathways’ for calcium-ion storage

Scientists in South Korea tested a new cathode material as part of a calcium-ion battery (CIB), achieving some impressive results. The material retained more than 90% of it initial capacity after 500 cycles, alongside some of the best performance results seen so far for this technology. The scientists say that this discovery opens up “an unexplored pathway toward the realization of stable and high-power cathodes in CIBs.”

Solarwatt, BMW launch new storage system for residential PV

The smallest of the storage units has a capacity of 4.8 kWh and an output of 1.5 kW. It can be expanded to eight battery modules in steps of 2.4 kWh and has a maximum of 57.6 kWh, and 6 kW, of power.

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