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This warehouse in Venlo is a major hub for solar components

Solar Investors Guide #12 – Supply chains embrace green operations

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Podcast: Specialist retailer BayWa r.e. Solar Trade is setting new standards for emissions-free logistics.Suppliers, transport, buildings, and packaging are all being examined, and notable progress has already been made. Dominik Dohr, Vice President of Global Procurement and Supply Chain at BayWa r.e. Solar Trade, has a clear vision in which renewable energy and sustainability go hand in hand. As Europe’s largest solar retailer, the company aims to cut emissions across all areas, from internal processes to logistics and supply chains.

ONE is a storage system for large C&I and utilities

LONGi: inside the ONE storage platform

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PV Guided Tours: LONGi ONE is an integrated storage platform for C&I applications, featuring intelligent energy management and a TÜV-certified early warning system at cell level. Watch the video to find out why storage is becoming a key component of modern energy infrastructure.

Michael Villa, Executive Director of the European industry association smartEn (Smart Energy Europe)

Michael Villa: "Demand side flexibility is a strategic asset"

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Once viewed as a brake on production, flexible electricity use is reshaping European industry's relationship with the grid. Michael Villa of smartEn sets out the opportunities, hurdles and the role of AI.

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.

Ludwig Schletter (right) talks about bigger projects and bigger solar roofs

SL Rack: innovations in roof mounting

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CEO Talk: Demand for private and commercial solar rooftops is picking up and the expansion of solar parks continues to accelerate. Yet rising metal prices and energy costs are putting pressure on suppliers of mounting technology. Ludwig Schletter, CEO of SL Rack, talks about the challenges.

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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)