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There are many factors to consider when deciding whether switching to solar panels is worth the cost. Weigh these pros and cons to decide if they're right for you.
The cost of a solar PV module make up the largest part of the total investment costs. As per the recent analysis of Solar Power Generation Costs in Japan 2021, module unit prices fell sharply. In 2018, the average price was close to 60,000 yen/kW, but by 2021 it is estimated at 30,000 yen/kW, so cost is reduced by almost half.
After years of cost reduction, the average US price per watt was between $2.51 to $3.31 in 2020 for 10 kW systems, [89] and $1.05/W for utility systems. [90] Another type of distributed generation implemented by a utility company was the world's first grid-connected pole-attached solar panels of Public Service Enterprise Group in New
Prices for installed PV systems show regional variations, more than solar cells and panels, which tend to be global commodities. The IEA explains these discrepancies due to differences in "soft costs", which include customer acquisition, permitting, inspection and interconnection, installation labor and financing costs.
While in 1977 prices for crystalline silicon cells were about $77 per watt, average spot prices in August 2018 were as low as $0.13 per watt or nearly 600 times less than forty years ago. Prices for thin-film solar cells and for c-Si solar panels were around $.60 per watt. [ 43 ]
By late 2011, a drop in European demand dropped prices for crystalline solar modules to about $1.09 [39] per watt down sharply from 2010. Prices continued to fall in 2012, reaching $0.62/watt by 4Q2012. [40] Solar PV is growing fastest in Asia, with China and Japan currently accounting for half of worldwide deployment. [41]
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