Perthyn has also helped Menter y Tŵr in Pwllheli to buy and run a community-owned hotel, as well as supported community-owned renewable energy project such as Egni Trefin.
Mae Perthyn hefyd wedi helpu Menter y Tŵr ym Mhwllheli i brynu a rhedeg gwesty sy'n eiddo i'r gymuned, yn ogystal â chefnogi prosiect ynni adnewyddadwy sy'n eiddo i'r gymuned fel Egni Trefin.