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Jorge Arenillas of Encavis (left) and Alejandro Tejero-Garcés of Visalia at the solar and wind parks in Aragón

Spain – Encavis signs its first hybrid solar-wind PPA

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The Hamburg-based renewables group will supply Spanish energy and telecoms operator Visalia from two solar parks and three wind farms in Aragón, delivering 60 GWh a year for three and a half years.

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.

Pick the manufacturer, follow the steps, and the device is connected

New my-PV app links heaters, inverters and storage

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The Austrian manufacturer’s new app for installers and end customers automatically detects devices on the home network, including hardware from more than 90 partner brands.

The current is rising, and so is the pace of commercial EV charging

Solar Investors Guide – Energy for cars and trucks

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The number of electric cars worldwide is rising rapidly. Making affordable charging power available means speeding up the rollout of charge points on private land, in semi-public areas and in public spaces.

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

LONGi: a look 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.

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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 rooftops, façades, open 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 water, room 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)