Spin-flip emitters could control energy pathways in singlet fission solar cells
Japanese researchers developed a molybdenum-based spin-flip emitter that efficiently harvests triplet excitons from singlet-fission tetracene dimers, producing strong near-infrared emission. This approach could boost solar cell efficiency and enable new quantum technologies by converting otherwise “dark” excitons into usable light.
BBDF 2026: Hybrid PPAs face slow uptake among industrial buyers
Hybrid power purchase agreements (PPAs) combining solar and storage are proving harder to close with industrial offtakers than standard solar deals, despite growing market interest.
Swiss startup offers lifetime guarantee for second-life batteries
Switzerland startup Evolium Technologies’ subscription-based business model offers residential battery owners a lifetime guarantee on second life batteries. The startup tests and remotely monitors each battery cell so it can alert customers when a cell is under-performing.
TNO unveils 12.4%-efficient perovksite solar tile
The Dutch research institute has presented what it describes as the world’s first perovskite-based roof tile, achieving up to 13.8% efficiency on standalone modules and 12.4% when installed on a curved surface. The flexible modules were produced using TNO’s experimental roll-to-roll platform,
France introduces cybersecurity, sustainability requirements in solar tenders
The French authorities announced they will assign 288 MW of PV in the 2026 tender for projects ranging from 100 kW to 500 kW in size and 925 MW in the procurement exercise for PV systems exceeding 500 kW. The tenders will include cybersecurity requirements as well as provisions to support European manufacturing.
Chinese researchers report 700 Wh/kg lithium-metal battery
A team from Nankai University and the Shanghai Institute of Space Power-Sources has developed a hydrofluorocarbon electrolyte enabling lithium-metal cells to operate at temperatures as low as -70 C.
US solar faces 53,000-worker gap ahead of 2026 deadline
The US solar industry may fall short of workforce needs as developers race to meet July 4, 2026 construction deadlines tied to federal tax credits.
Sonnen cuts prices for large residential battery products
German company Sonnen is set to offer its customers a 22 kWh battery energy storage system (BESS) for the price of an 11 kWh product. The offer will be valid until the end of June 2026.
Global solar additions reached record 511 GW in 2025, says IRENA
Latest figures from the International Renewable Energy Agency find solar contributed the majority of a record 692 GW of renewables capacity added worldwide last year.
Pexapark logs more than 1 GWh of European storage PPAs in March
War in the Middle East is putting pressure on energy markets and boosting the value of solar and storage power purchase agreements (PPAs), with Europe seeing a surge in activity in March, according to Swiss consultancy Pexapark.
