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Thermophotovoltaic battery could store energy at $14/kWh

Developed by researchers in Spain, the battery uses renewable electricity to melt low-cost metals such as silicon or ferrosilicon alloys to produce and store latent heat, which is in turn used by a thermophovoltaic generator to produce power. According to its creators, the device may store electricity at a cost of €10 per kilowatt-hour (AU$14.6/kWh) for a 10MWh system.

Storing renewable electricity with supercritical CO2 heat pump

Researchers in Spain have designed a pumped thermal energy storage system that uses supercritical carbon dioxide as a heat pump and a heat engine. The proposed system is claimed to achieve an efficiency of 80.26% and an LCOS of €0.116/kWh (AU$0.18/KWh)


Fully autonomous robot for solar O&M

OnSight Technology has developed a tele-operated vehicle to clean solar arrays. It is equipped with a radiometric thermal imaging camera and an optical zoom camera backed by artificial intelligence. It has a range of 12 hours and a speed of 1.6 km per hour.

Hybridising PV, redox flow batteries and geothermal heat pumps

A Spanish consortium is equipping one of Madrid’s largest metro and bus stations with a hybrid system that combines PV, geothermal pumps, and vanadium redox flow batteries to provide cooling and heating.

Australian-led consortium acquires French solar company with 15GW under development

A consortium led by Australian financial group Macquarie Asset Management will acquire French solar developer Reden Solar. The $3.7 billion (€2.5 billion) transaction is expected to be finalised in the third quarter of this year.

New investor to boost Gransolar’s Australia vision

Spanish renewables group Gransolar says backing from international financier will “supercharge” its growth plans in Australia.

Robot dog for PV plant monitoring

Spanish renewable energy company Acciona is using a robot dog, instead of drones, to monitor a solar park in northern Chile. The device has a built-in thermal vision system that generates thermographic reports on the status of the different PV plant components, as it walks between the panel rows following a programmed route.

Australian zinc-bromide batteries chosen for Acciona’s Spanish testing field

Gelion’s zinc-bromide Endure batteries will undergo commercial tests at the 1.2 MW Montes del Cierzo testing field Spanish renewable energy company Acciona Energía operates in Navarra, in the north of Spain.


PV system design for low-cost hot water production

Developed by Spanish scientists, the proposed system design is said to be able to achieve water temperatures above 70 degrees Celsius and to cover around 85% of the annual sanitary hot water consumption of a household with six people.


Solar farms prove to bee hives of economic activity

A new study from researchers at the universities of Lancaster and Reading in the UK has managed to quantify the economic boost provided by the symbiotic relationship between solar farms and honeybee hives.