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In page Feed-in tariff:

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Often all power produced is fed to the grid, which makes the system work rather like a PPA according to the disambiguation above, however, there is no need for a purchase agreement with a utility, but the feed-in tariff is state-administered, so the term "feed-in tariff" (German "Einspeisetarif") is usually used. Since around 2012, other types of contracts became more usual, because PPAs were supported and for small-scale solar projects, direct use of power became more attractive when the feed-in tariff became lower than prices for power bought.[citation needed]