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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.

Good news: around 32.2 million citizens are eligible to apply for the rebate

Spain moves toward national tax relief for solar self-consumption

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Around 81 percent of residents in municipalities surveyed can apply for property tax rebates, according to a new report from Fundación Renovables and UNEF.

Not abstract art but an aerial view of the Amynteo Cluster in Greece

Greece – former lignite mine reborn as gigawatt-scale solar hub

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RWE and PPC have finished building 930 MWp of solar capacity in Western Macedonia, part of a joint venture that also has 567 MWp under construction for 2027.

Leon Zhang (right) is President of LONGi Solar Europe

LONGi Solar: modules and storage from a single source

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CEO Talk: The utility business in Europe is growing and increasingly challenging. Solar fields now come with large batteries, and suppliers must meet standards for grid compliance, safety and security. How is the business changing and what strategy will ultimately succeed? Leon Zhang, President of LONGi Europe, shares his view.

Solar power (yellow) picks up as hydropower (blue) declines through summer, though rising imports (purple) show it isn't yet enough to close the gap

Why Croatia's solar rollout needs to triple its pace by 2029

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The renewable energy association OIEH estimates the country will need around 2.4 GW of new solar capacity over the next four years just to cover current summer import requirements, as hydropower's seasonal decline deepens.

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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)