IDEAS is an innovative integrated renewable energy system (RES) to cost effectively exceed current RES efficiencies, generating electricity, heat and cooling technologies. The system is optimised for mixed use building types, across various climate conditions, maximising RES output under diffuse solar radiation climate conditions through luminescent and geometric concentrator techniques leading to current solar system efficiencies being exceeded electrically. Thermal enhancement is achieved using enhanced organic phase change materials (PCM) with a passive biomimetic heat transfer mechanism for heat storage and discharge. A heat pump uses waste heat for an integrated underfloor heating and hot water systems This building integrated RES uses advanced control techniques and intelligent design to maximise performance in solar energy, thermal storage and heat pumps.