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Research

GoodWe debuts PV-driven heat pump water heaters

The Chinese manufacturer said their new residential heat pump water heaters deliver a coefficient of performance of up to 4.2, with a heating capacity ranging from 4.5 kW to 5 kW. The units are available with water tanks in 200 L, 300 L, and 500 L sizes.

Crystalline silicon vs. thin film at high latitudes

A four-year analysis conducted at a testing field in eastern Poland has shown that crystalline solar panels offer a stronger performance than thin-film panels at high latitudes. The tests revealed pronounced seasonal variability across all technologies, with thin-film modules showing markedly lower capacity factors than crystalline silicon, particularly in winter.

The impact of dust on PV systems in arid coastal environments

A Saudi–Egyptian research team investigated the effects of four types of dust on photovoltaic panels in arid coastal environments, finding that power losses can reach up to 48%.

Cambridge scientists discover photovoltaic properties in organic radical semiconductor

The researchers said their new discovery could open the way to the manufacturing of simpler solar panels made from a single material.

Longi reveals back-contact PV test results from offshore environments

The Chinese manufacturer claims back-contact Hi-MO 9 modules outperformed TOPCon counterparts in a six-month offshore test, showing higher power yield, better low-light performance, and lower operating temperatures.

Japanese manufacturer launches dual-fuel commercial rooftop heat pump

Japanese machinery maker Yanmar says its new commercial rooftop units (RTUs) include a standard model, a dual-fuel heat pump, and a dedicated outdoor air system (DOAS) with integrated energy efficiency ratios (IEER) up to 21.3.

Japanese utility invests in perovskite solar PV startup

J-Power announced an investment in US-based perovskite solar specialist Active Surfaces, along with plans to pilot product tests.

Enphase announces complete off-grid solar-storage system

Enphase Energy has introduced a complete off-grid solar and storage system that integrates batteries, microinverters, and generator control, with international rollout set for 2026.

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Schneider Electric unveils 200 kWh C&I battery storage system

Schneider Electric has introduced a modular 200 kWh battery energy storage system for commercial and industrial (C&I) users, scalable up to 2 MWh across 10 units.

Baxi unveils high-temperature air source heat pumps

Baxi has introduced its HP60 monobloc air source heat pump series, offering outputs from 4 kW to 13 kW and a seasonal coefficient of performance of up to 5.34.

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