Tynnwyd sylw at nifer o heriau  fel rhan o'r gwerthusiad o safbwynt datblygu prosiect ynni adnewyddadwy cymunedol. Ystyriwyd sut yr oedd rhaglen Ynni'r Fro eisoes yn mynd i'r afael â'r heriau hyn, a chyflwynwyd argymhellion ynghylch sut y gallai'r gwaith gael ei ddatblygu yn y dyfodol. Y prif heriau o safbwynt cyflawni prosiectau ynni adnewyddadwy cymunedol a bennwyd gan yr adolygiad yw:
The evaluation also identified a number of challenges to developing a community renewable energy project; it looked at ways in which the Ynni’r Fro programme was already addressing these challenges, and made recommendations on how the work could be developed in the future.  The main challenges to delivering community renewable energy projects that the review identified are as follow: