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Our pick of the week: JA Solar’s Planet Fusion hybrid storage system

PV Europe’s picks of the week – from batteries to light roofs

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JA Solar adds a DC-coupled hybrid system and AC commercial storage, while Electrofleet buys 40 MWh of buffer storage for truck charging. Solcliv targets low-load roofs, and SAX Power’s app ties together electricity, heat and mobility – these are our picks.

Philipp Kunze (right) has plenty to say about project business

NextPower: more value from utility-scale projects

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CEO Talk: Utility-scale solar projects across Europe are under growing cost pressure, even as expectations around yield, grid integration and long-term profitability continue to rise. Which new ideas boost project value, and which innovations matter most to the market? Let‘s find out.

Combining vertical systems and conventional solar parks provides clear economic benefits

Vertical PV and existing solar parks: a case for overbuilding

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Next2Sun argues that combining south-facing and vertical installations can expand connected capacity by around 60 percent while cutting infrastructure costs and improving market returns.

Cells made in Europe: the signatories want wafers and polysilicon to follow

Europe’s solar sector urges EU to rebuild the PV value chain

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More than 75 module assemblers operate across the continent, against just one ingot-and-wafer project and one polysilicon producer. Now over 35 industry players want the Industrial Accelerator Act to fill the gaps.

Arrays such as this one must deliver reliable output for three decades

Why today's quality decisions will shape 30 years of solar

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A recent SolarPower Europe webinar brought together industry, research and the Horizon Europe SUPERNOVA project to examine what defines reliable, bankable solar assets over their full lifetime.

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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)