PV systems

Researchers assess degradation in PV systems older than 15 years

Scientists at the Polish Academy of Sciences have studied PV installations older than 15 years and observed a decrease in energy productivity ranging from 1.9% to 2.9% over a 16-year period. They conducted their tests on two rooftop PV systems in Sinsheim, a town in southwestern Germany. The first system, a 37.8 kW grid-connected array, consists of …

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Global sales of off-grid solar energy kits hit 9.5 million units in 2022

A new report by GOGLA shows annual sales of solar energy kits (lanterns, multi-light systems, and solar home systems) globally reached 9.5 million units in 2022, with 5.2 million sold between July and December 2022. “This clearly shows that we have learned to value them as we go. We have also learned to value the …

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What is a Hybrid Solar System, and is it Worth it?

If you’re interested in going solar, it’s important to know about the options available to you—especially because new developments mean there is better technology on the market than ever before. One compelling option is a hybrid solar system, which is tied to a grid but also has special hybrid inverters and battery combinations that allow …

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microinverters

Micro-inverters vs. string or central inverters

Micro-inverters vs. string/central inverters A French research group has compared the performance ratio of 100 PV systems relying on micro-inverters with that of 100 installations relying on string/central inverters. It found the performance ratio is around 79% for both system typologies and that arrays with micro-inverters are more sensitive to environmental factors. A group of …

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5kw solar system price

Global online inventory of PV systems exceeding 10 kW in size

Global online inventory of PV systems exceeding 10 kW in size Through the inventory, an international group of researchers was able to identify 68,661 PV facilities, totaling 423 GW across 31 countries. According to the scientists, the online database provides insight into global trends for PV siting decisions, as well as into the gap between …

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