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Gerard Scheper (centre) is a Dutch expert in solar and storage business

Solar Investors Guide #5 – prospects and pitfalls for investments in solar and large battery projects

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With module prices currently low, investing in solar is especially appealing – though conditions may not stay this favourable for long. The battery storage market is also heating up, particularly for large-scale systems. We spoke with Dutch market analyst Gerard Scheper about the key players, what’s driving the shift and what change to expect.

One module down, several million UK homes to go

UK – £15bn Warm Homes Plan backs solar, storage and heat pumps

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The UK government has unveiled its £15 billion Warm Homes Plan, placing solar panels, batteries and heat pumps at the centre of a significant shift away from insulation-heavy retrofit strategies.

When the sun pays the heating bill instead of the utility

My PV moves to direct sales for electric heating in Benelux

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With a new branch and a local Technical Sales Manager, My PV is targeting installers in the Benelux region to meet the rising demand for solar-powered heating systems, providing hands-on support and direct sales channels.

Barbara Terreni presents the new GoodWe products.

GoodWe – solar solutions for all areas

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PV Guided Tours: From the roof and façade to the carport – if you want to harness every part of your building for solar energy, GoodWe has a solution. Barbara Terreni, Senior Technical Solution Manager Europe at the PV Building Materials Division, explains how to turn your building into a solar power plant.

Tool of the week checks in on lithium-ion batteries before they check out

PV Europe products of the week – system planning, mounting and more

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Socomec has launched its new Solive Pro tool for battery storage monitoring. Senec is integrating forecast-based charging into its home storage systems. Ernst Schweizer has introduced a new system to enhance safety for large-format modules, while Lorenz has launched a new mounting solution for green roofs. These are PVE’s top picks this week.

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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)