In the first six months of 2025, the world added 380 GW of new solar capacity — 64% higher than during the same period in 2024, when 232 GW were installed. In 2024, it took until September for global solar capacity additions to surpass 350 GW, while in 2025, the milestone was reached in June. [pdf]
A gigawatt is a unit of power equal to one billion watts and is generally used to measure large-scale energy production such as the output of a photovoltaic or wind energy system. To put this into perspective, to generate a gigawatt of energy, 3.125 million solar panels would be required. [pdf]
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