The future leaves
signals in time.

Researchers in Italy tested a 10 kW dual-source heat pump using CO₂ as refrigerant, with air or photovoltaic-thermal collectors as heat sources. Reported results show solar operation improved heating performance under favorable irradiance, with COP increasing 18.7% as irradiance rose, and an optimized source-switching strategy delivered modest annual electricity savings.

The Spanish region of Castilla y León plans to extend its environmental impact tax to ground-mounted solar installations from 2027. Spanish solar association UNEF has criticized the proposal, arguing that PV projects already face multiple taxes and that the new levy lacks environmental justification.

Safety science company UL Solutions has announced a new certification pathway intended to help manufacturers of modular direct current (DC) battery energy storage systems (BESS).

Rio Tinto is assessing a 360 MWh thermal battery for an alumina refining project in Australia, which aims to replace fossil fuels. This proposed project could potentially cut annual emissions by 67,000 metric tons of carbon dioxide.

LONGi has unveiled an intelligent manufacturing base in Suzhou to advance solar-storage integration. The company says the base's upgraded manufacturing capabilities reduce fault-related downtime losses by 75% and shorten the time needed to close quality issues by more than 50%.

Researchers in China found that a large-scale desert solar park increased soil carbon content by 125.89% compared to undisturbed land. The study also identified how PV mounting systems, soil depth, and environmental factors influence carbon accumulation and its threshold effects.

Germany's Encavis signed a hybrid Power Purchase Agreement (PPA) with Spanish energy provider Visalia. Under this agreement, Encavis will supply 60 GWh of renewable electricity annually for 3.5 years, covering two solar parks and three wind farms totaling 199 MW.

France’s economic affairs committee voted to remove proposed budget measures. These measures would have allowed for the early termination of some solar contracts and reduced compensation for curtailment during negative electricity prices.

China has outlined revised rules for the spot market that will cover joint bidding, dispatch, settlement, and performance assessment, alongside further electricity market reforms. These rules are intended to support the integration of renewable energy and storage.

In a new white paper, S-5! is challenging assumptions regarding solar mounting on metal roofs off-purlins. The paper claims to conclusively demonstrate that metal roof panels possess the structural capacity for mounting solar panels between purlins.

According to EIA data, U.S. rooftop solar output quadrupled over the last decade, expanding from 18.8 TWh to nearly 93 TWh. This growth was led by states including California, Arizona, Texas, Florida, and New York.

According to LevelTen, solar power purchase agreement prices rose 5% in the third quarter, mainly due to new tariffs. Wind PPAs held relatively steady in Q3, but could begin to rise anew with solar as the latest round of tariffs takes effect later this year.

Pressure-sensitive adhesive (PSA) tape is relatively new to the energy storage space but is used in many industries for equipment protection, security and flexible configuration. The report says more BESS engineers would use it for enhanced safety, performance and easier assembly if they knew about it.

Distributed energy storage company Viridi and developer and financier Good Carbon Co. announced the deployment of a 3.75MWh indoor battery energy storage system using its "Fail-Safe Anti-Propagation architecture" at an affordable housing development in Buffalo, New York.

CleanTechnica reports that Canada plans to send offshore wind power from the Nova Scotia coast toward energy-thirsty communities, including parts of the United States. The outlet's headline characterizes the plan as a stab in the back for Trump.

Research from Lightsource bp finds that combining automated foundation piling, steel-frame solar panels, bolt-free module installation and on-site pre-assembly could cut gigawatt-scale solar costs by 22% and reduce installation time of gigawatt-sized solar farms by up to 30%.

New rules in Türkiye allow businesses to use higher-powered batteries behind existing grid connections. This boosts possibilities beyond the grid-connection allowance for imports, provided controls prevent grid exports and excessive imports.