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Energy Storage

How long do residential solar batteries last?

Multiple factors affect the lifespan of residential battery energy storage systems. We look at the lifespans of batteries in the third part of this series.


Octopus Energy introduces new residential heat pumps

Octopus Energy has developed new residential heat pumps, with plans to initially market a 6 kW version, followed by larger models in the near future. The UK-based company makes the heat pumps at its facility in Craigavon, Northern Ireland.


The Hydrogen Stream: Researchers test marine green hydrogen feasibility

Mexican researchers have revealed test results for offshore wind-based hydrogen production, while Turkey has started negotiating hydrogen facility partnerships with the United Arab Emirates.


Research shows heat pumps perform better than fossil fuel heating in mild cold climates

A British research group has aggregated information from seven field studies on heat pumps from around the world and has found air-source devices have an average coefficient of performance (COP) of 2.74 when temperatures are above −10 C. Below that, COP is between 1.5 and 2.

Johnson Controls-Hitachi Air Conditioning unveils residential dual fuel heat pump system

Johnson Controls-Hitachi Air Conditioning has developed a residential dual fuel heat pump system that combines an air source heat pump and a gas furnace. The manufacturer says the furnace is designed to ensure there is no compromise in heating performance, even when temperatures are extremely low.


Sage demonstrates long-duration storage with underground reservoirs

US-based Sage Geosystems has presented field results showing that its Earthstore underground storage system can provide 18 hours or more of storage capacity, in addition to short-duration power. The solution is said to be cost-competitive with lithium-ion batteries and natural gas peaker plants.


Dubai’s 250 MW/1,500 MWh pumped-storage project nearing completion

Dubai Electricity and Water Authority’s (DEWA) Hatta pumped-storage hydroelectric power plant is now 74% complete, and it is expected to begin operations in the first half of 2025. The facility will also store electricity from the 5 GW Mohammed bin Rashid Al Maktoum Solar Park.


Three steps to reduce battery storage fire risk

Lithium-ion batteries are generally safe and unlikely to fail, but they can catch fire if damaged, stored, or operated incorrectly. With calls mounting for development of engineering good practice, US-based Firetrace International suggests three steps that battery manufacturers, developers and operators should take into account.


AI control tech to improve coefficient of performance of air source heat pumps

Scientists from South Korea have developed a heat pump optimization technique that controls the secondary refrigerant flow. The proposed technology offers the advantage of bypassing the need to control the compressor of the heat pump, which is a function that is commonly not available in commercial devices.


Stryten Energy vanadium redox flow battery on path to commercialization

Stryten Energy is planning to begin commercializing its vanadium redox flow batteries in January 2025. Meanwhile it has deployed a 20 kW/120 kWh pilot-sized version of the storage system at a facility operated by Snapping Shoals EMC, an electricity cooperative in Georgia, United States.

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