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European validation strengthens the case for LONGi’s BC technology

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For utility-scale solar projects in the DACH region, module choice affects more than peak power: it shapes energy yield, land use and the investment case over the project’s lifetime. European research, testing and field assessments of LONGi’s Back Contact (BC) technology provide locally relevant evidence that developers and investors can consider in due diligence, alongside their own site-specific analysis.

Atmoce is entering the C&I business with its new Atmoce storage

Atmoce: new BattBank C&I storage system

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PV Guided Tours: Atmoce is introducing a 25-year warranty on its residential storage system and unveiling intelligent module-level energy management that supports automated snow clearing of solar panels. On the storage side, the portfolio is being expanded with the C&I BattBank, the first AC-coupled, stackable commercial storage system designed for low-voltage operation.

Pascal de Boer is General Manager Europe at SolarEdge

Pascal de Boer: "The most interesting driver is cybersecurity itself"

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SolarEdge's European chief explains why hyperscaler power demand and cybersecurity concerns around Chinese inverters are reshaping the company's strategy on the continent, alongside AI, US manufacturing and the new Nexis platform.

Both visible residential tiers turned upwards in September

September Battery Index: residential prices climb, commercial holds firm

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All three home storage tiers rose in September 2026, by between 7 and 10 percent, with low-voltage systems reaching €94.4/kWh. Commercial pricing held steady in smaller systems and firmed in larger ones, sun.store data shows.

Same rooftop, same TOPCon dominance, but the monofacial-bifacial choice behind it is anything but settled

Five questions to ask before selecting a module

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As TOPCon dominance gives way to a more differentiated market, Ignacio Espinosa of JA (formerly JA Solar) sets out what really separates one module from another.

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What is photovoltaics?

Photovoltaics (PV) refers to the generation of electrical energy from sunlight. At the heart of this process are the solar-active semiconductors known as solar cells, which capture sunlight and convert it directly into electricity.

From a technical standpoint, a PV system or solar installation functions as a generator. Here, individual solar cells are combined into a solar module, which is protected from the elements. These modules are then assembled into a larger solar generator, which can be mounted on rooftops, façades, open ground or specially designed structures. The electricity generated is direct current (DC), which is converted into alternating current (AC) by an inverter. This AC power can be used directly on site or fed into the public grid via the building’s connection. The electricity is typically supplied to the local utility or grid operator.

Larger PV systems installed on open land are often called solar parks. These feed power into the grid via dedicated transformers and switchgear. In many countries special Acts and regulations govern remuneration for solar power, whether via feed-in tariffs or market premiums for direct sales to third parties.

Self-consumption can be increased by using solar power for heating water, room heating, air conditioning or refrigeration. Battery storage systems help by storing surplus solar electricity for later use. These so-called solar batteries improve system reliability, especially when solar output dips.

Not all incoming sunlight is converted into electricity. The conversion rate depends on the intensity and wavelength of the incoming light spectrum. This ratio between usable electrical output and the maximum available solar radiation is known as efficiency.

The performance of a solar generator or storage system is defined by its output. When multiplied by the number of sunshine hours, this gives the solar yield – the amount of electricity generated per day, month or year. In addition to charging and discharging power, solar batteries are also rated by their capacity, or the amount of energy they can store. Power is measured in kilowatts (kW) or megawatts (MW), while energy and yield are expressed in kilowatt-hours (kWh) or megawatt-hours (MWh). (HS)