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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

Residential battery price curve bends lower in May

May Battery Index: residential decline, commercial standstill

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May data from sun.store show a broad price decline across residential battery segments, reversing part of the April increase in the performance category. In the commercial segment, pricing remained broadly stable.

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.

Electric fleet charging in Sweden is about to get a lot more plug sockets

Sweden – Soltech subsidiary lands four-year EV charging mandate

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Svenska Bostäder has awarded a multi-year framework agreement covering 166 properties to Soltech's Takorama Elteknik, as the housing company works towards full charging coverage by 2030.

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.

Straight talk: solar green roofs are the future of rooftop real estate

World Green Building Congress: green roofs and PV get a joint rulebook

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Presented in Berlin, the updated guide from Nürtingen-Geislingen University sets out design, vegetation and structural criteria for combining photovoltaics with green roofs, drawn from real-world reference projects.

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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)