rooftop solar

Researchers in Italy analyzed air-to-water heat pump performance in Alpine regions, focusing on how start-up and defrost cycles affect efficiency under current and future climate conditions. Their simulations show that while warmer temperatures slightly reduce defrosting losses and modestly improve efficiency, start-up cycling losses remain significant and continue to limit overall performance gains.

The Chinese manufacturer said its lightweight Light Diamond TOPCon module delivers 560 W at 24.94% efficiency.

Supply chain attacks compromise PV systems by targeting trusted vendors, software, or hardware components, allowing attackers to infiltrate systems indirectly through legitimate channels. These attacks can disrupt operations, introduce hidden vulnerabilities, and impact multiple assets at once, making vendor security and system validation critical for resilience.

New figures from grid operator Enedis reveal that France added 1,418 MW of new PV capacity in Q1 2026, roughly matching Q1 2025, despite a broader sector slowdown linked to regulatory changes and delayed tenders.

Researchers in the United Kingdom found that thermostatic radiator valves can reduce air-source heat pump space heating energy use by 6–8% without affecting system efficiency when used correctly. TRVs must be applied carefully in well-designed, balanced systems with at least one open flow path, as they mainly serve as a secondary tool for room-level comfort control rather than a replacement for proper heat pump design and low flow temperature operation.

India-based Pur Energy has launched the PuREPower 3.0 Lite, an all-in-one lithium battery-based power backup solution positioned as a cleaner and more compact alternative to conventional inverter and lead-acid battery combinations for the residential segment.

Florida-based Terra Energy offers solar subscriptions to homeowners on an initial 36-month agreement and seeks to retain those customers for the long-term by proving it can offer something better than the alternative.

Credential compromise attacks allow adversaries to gain unauthorized access to PV systems by stealing or guessing valid login credentials, enabling them to manipulate operations, disrupt monitoring, or take control of critical assets. These attacks can lead to operational instability, reduced energy production, and safety risks, making strong authentication and access control essential for system resilience.

Free midday electricity schemes aim to shift household demand into periods of high solar PV generation, reducing midday surplus and evening fossil-fuel ramp-up. Research on Australia’s Solar Sharer program suggests such incentives could significantly improve renewable utilization, but outcomes depend on consumer behaviour, load shifting, and rebound effects.

Analysis of longitudinal survey data has explored the link between intended and actual solar panel adoption in UK households. It finds that while most households that had intention of installing solar in 2012-13 were yet to do so by 2021-22, serious intention to install solar still increases the likelihood of adoption more than other factors such as income and environmental perceptions.