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Pick of the week: these alpine solar modules can handle heavy snow loads, strong winds and intense UV radiation

PV Europe‘s pick of the week – tougher modules, faster roof planning

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Solitek shows new rugged solar modules. Valentin adds 3D building models for planning with a mouse click. A robust firefighter switch for PV systems, and Solar-Planit's new start page and project management round off this week's picks.

Christian Carraro is Vice President Europe Strategic Accounts and Programs at SolarEdge

Christian Carraro of SolarEdge: “Integrated smart energy solutions are key”

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The manager at the solar and storage technology company argues that the era of stand-alone PV systems is over, as storage and energy management now drive installations. And he has solid reasons to be optimistic for 2026.

Gregor Kuschmann (right) presents the new Battery vision 2

Solarwatt: from home to market – complete systems for buildings

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PV Guided Tours: Homes are increasingly becoming energy producers. Sector coupling within the building is growing in importance and even electric vehicles are now part of the picture. Gregor Kuschmann and Robert Pawlik of Solarwatt explain which components and solutions make energy independence possible and how buildings are playing a new role in the energy market.

Every one of these needs a battery, and Europe still doesn't make enough of what goes inside it

Two cathode deals, one weak link in Europe's battery chain

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July brought two answers to Europe's cathode gap: a BASF-CATL supply deal and Gotion's €940 million Spanish complex, while lithium, anode and recycling progress continued elsewhere, New AutoMotive's monthly tracker shows.

New mounting technology is opening up even more areas for solar power

Solar Investors Guide – Innovations for mounting

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Energy crises and rising fossil and nuclear prices are making solar and battery storage more attractive than ever, driving demand across industrial rooftops, open land and car parks – find out more in the latest guide.

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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)