Ar raddfa lai, mae’r newidiadau arfaethedig i’r Tariffau Cyflenwi Trydan hefyd yn tanseilio cynlluniau y mae grwpiau cymunedol a chonsortia eraill yn eu cynllunio. Maent eisoes wedi buddsoddi symiau sylweddol o’u harian eu hunain mewn prosiectau er mwyn eu symud ymlaen.
At the smaller scale, proposed changes to the Feed-in-Tariff are similarly undermining schemes being planned by community groups and others c who have already invested significant sums of their own money in taking projects forward.