residential PV

The country reached a cumulative installed PV capacity of 43.5 GW at the end of December, according to new figures released by Italian grid operator Terna.

A research group from the European Commission Joint Research Centre has developed a new PV climatic classification, the first to address annual yield and performance ratio. Their work resulted in 10 globally applicable clusters. “It challenges the assumption that many more classes are needed to capture PV-relevant climate,” the researchers said.

In a new weekly update for pv magazine, Solcast, a DNV company, reports that Central Europe, led by Germany, experienced strong solar generation in December due to clear skies from a blocking weather pattern, while Iberia, Scandinavia, and Eastern Europe saw reduced irradiance from storms and cloud cover. Late-month Arctic cold and snowfall further suppressed PV output in Eastern Europe through snow soiling, exacerbating already weak solar conditions.

The launch of the new product suggests Tesla could renew its focus on residential solar and expand U.S. lease options with Powerwall.

Axinar has launched SolBox, a direct PV water heating system that powers electric resistance accumulators without thermal collectors. It’s designed for homes and businesses, offering real-time monitoring, MPPT optimization, and automatic grid backup.

Researchers from Australia’s national science agency are working with Malaysian authorities to assess how different battery chemistries perform under tropical conditions, including high temperatures, humidity, and corrosion, and how these factors affect durability, safety, and cost effectiveness.

Once considered isolated incidents, spontaneous glass breakages in solar modules are becoming more frequent, highlighting the limits of some manufacturing choices and the need for closer quality control.

The new IQ9N-3P microinverter utilizes gallium nitride technology to deliver 427 VA of peak power and 97.5% efficiency for the 480 V three-phase commercial market.

French company Dal’Alu has developed a high-capacity aluminum gutter designed to efficiently collect and channel rainwater from large roofs and solar panels. Its on-site profiling, modular components, and durable construction reportedly ensure rapid installation, long-term performance, and compliance with current building standards.

Solar additions in calendar year 2025 comprised 28.6 GW of new utility-scale solar capacity, 7.9 GW of rooftop PV power, and 1.35 GW of off-grid and distributed installations.