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Live Stream

On June 23 - 24, 2026 the editors of photovoltaik and pv Europe will be reporting live from the exhibition halls in Munich. At The smarter E Europe, we will showcase the most important innovations and highlight the trends for 2026. Our live streaming in both German and English will kick off at 1 pm CEST.
Tip: Use YouTube's reminder function to not miss out!

Latest news

Sun and storage may be aligned, as here in Denmark, but financing is still catching up

Eurelectric urges derisking over clean energy financing gap

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A €500 billion yearly shortfall in clean energy funding risks slowing electrification. The power sector body Eurelectric sets out a series of measures to improve regulatory stability, strengthen investor confidence and unlock private capital.

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Suntech Expands High-Efficiency Module Portfolio with Quarter-Cut Technology

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As solar markets place increasing focus on long-term performance, reliability and project bankability, demand is growing for technologies that combine high efficiency with independently verified quality.

An eye on aesthetics, with limited impact on performance

Germany – colour films mark a step change in PV aesthetics

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The Fraunhofer ISE team in Freiburg has developed a technique using structured coatings and cutouts to create detailed, durable patterns on modules, opening new scope for architecture and design in PV.

Giannis Giannakopoulos, Chief Executive Director, Integrated Utility, of London-listed METLEN

Giannis Giannakopoulos: “Portfolio and aggregator management is essential”

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METLEN's integrated utility chief explains how the group fuses generation, storage, trading and supply into one platform, underpinning decarbonisation, customer affordability and industrial resilience across more than 40 markets.

Building blocks for the basement: three-phase configurations scale to 21.6 kW and 108 kWh

Deyle's new LFP home storage scales to 108 kWh

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The Optimus Prime Home Energy Cube from Germany's Deyle Technik will reach the residential market in June, built on 314 Ah lithium iron phosphate cells with a projected lifespan above 11,000 charging cycles

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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)