▁Government ▁( P f G ), ▁the ▁Executive ▁set ▁out ▁targets ▁for ▁renew able ▁energy . ▁It ▁hoped ▁that ▁ 4 % ▁of ▁heat ▁would ▁come ▁from ▁renew able ▁resources ▁in ▁ 2 0 1 5 ▁with ▁a ▁further ▁target ▁of ▁ 1 0 % ▁in ▁ 2 0 2 0 . ▁The ▁R HI ▁scheme ▁offered ▁in cent ives ▁so ▁that ▁business es ▁and ▁non - dom estic ▁users ▁would ▁change ▁to ▁renew able ▁energy , ▁which ▁includes ▁bi om ass ▁bo ilers , ▁solar ▁p umps ▁and ▁heat ▁p umps . ▁ ▁The ▁scheme ▁was ▁approved ▁by ▁Executive ▁minister s ▁to ▁meet ▁the ▁Program me ▁for ▁Government ▁target . ▁The ▁scheme ▁was ▁budget ed ▁at ▁£ 2 5 ▁million ▁for ▁ 2 0 1 1 - 2 0 1 5 . ▁The ▁scheme ▁offered ▁to ▁cover ▁the ▁cost ▁of ▁the ▁fuel ▁and ▁the ▁bo ilers ▁and ▁to ▁leave ▁a ▁margin ▁of ▁approximately ▁ 1 2 %. ▁The ▁scheme ▁effectively ▁paid ▁people ▁to ▁heat ▁properties , ▁so ▁long ▁as ▁they ▁used ▁renew able ▁energy ▁to ▁do ▁so . ▁The ▁lack ▁of ▁cost ▁controls ▁encourag ed ▁applic ants ▁to ▁profit ▁from ▁using ▁excess ▁energy . ▁ ▁In ▁the ▁period ▁ 2 0 1 4 - 2 0 1 5 , ▁there ▁was ▁an ▁unders pend ▁of ▁£ 1 5 ▁million ▁as ▁there ▁was ▁a ▁lack ▁of ▁u pt ake . ▁From ▁April ▁ 2 0 1 5 ▁applications ▁increased ▁" sign ific antly ". ▁After ▁officials ▁announced ▁changes ▁to ▁the ▁scheme , ▁