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Inside the inverter: once a black box, now a connected node in Europe's grid

Inverters open a new front in Europe's energy sovereignty

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Once a commodity, the solar inverter is now a connected gateway to Europe's energy system. As the market recovers, manufacturers face new pressures from cybersecurity, grid integration, local value creation and geopolitical competition.

Genera has opened the call for entries for the twelfth Innovation Gallery

Genera scouts practical technology for returning Innovation Gallery

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The energy trade fair in Madrid is inviting research institutions and exhibitors to submit technologically mature, market-ready developments for its 2026 showcase, with applications closing on 16 October.

The gap between cars and vans is narrowing, lane by lane

UK – electric vans and cars both hit August records

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Battery electric vehicles had their strongest August on record, with cars taking 30 percent of new registrations and vans reaching 17 percent, as sales continued to outpace the UK's zero-emission vehicle targets for a third straight month.

One of the herd's 150 members, making itself at home

Germany – a solar farm rises to deer height

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In Saarland, Perigus Energy raised its modules just high enough for the estate's antlered residents to pass safely beneath them, with early results showing the herd has settled in well.

Franz-Josef Feilmeier (right) is an expert in energy storage

Fenecon: large storage systems – made in Europe

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CEO Talk: Growing demand for large-scale storage systems is working in favour of European suppliers. Safety and security are becoming increasingly important. What role does service play, from commissioning through the entire lifespan of the storage system? Fenecon's CEO shares his view.

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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 rooftopsfaçadesopen 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 waterroom 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)