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Parking garages are attractive assets that enhance their worth through solar facades.

Solar Investors Guide #5 – Solarised parking and charging

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The era of petrol and diesel dominance is drawing to a close. Mobility is transitioning to electric, with millions of private electric cars, company fleets, and commercial vehicles creating new demands on the energy supply. Filling stations, parking garages, and parking lots now represent opportunities to provide EVs with solar power.

Working yard beneath a rooftop solar installation by IBC Solar in Spain

Spain – incentives boost for PV storage and self-consumption

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The parliament in Madrid has ratified a package of 80 measures backed by €5 billion that extends self-consumption rules, eases storage requirements and advances energy communities.

On the right angle: rooftops and public opinion are tilting towards generation

Croatia to launch €38 million rooftop solar programme

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A new funding framework introduces higher grants for lower-income households and, for the first time, dedicated support for battery systems alongside solar and heat pumps.

A closer look at the hardware enabling megawatt charging without megawatt grid connections

Fraunhofer-led project scales up charging for heavy-duty transport

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The HV-MELA-BAT programme is advancing megawatt-scale charging with modular DC/DC converters, achieving high efficiency and enabling over 1 MW charging on a limited grid connection.

Veselin Todorov sees coordination as key to Bulgaria’s solar progress

Bulgaria’s solar future – challenges, opportunities and the path forward

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Veselin Todorov, Chairman and Founder of Solar Academy Bulgaria, shares his perspective on the development of photovoltaics and energy storage in Bulgaria, the challenges facing the sector and the opportunities ahead.

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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)