Energy performance enhancement in multistory residential buildings.

Highlights: [•] Solar potential and energy consumption of multistory buildings is investigated. [•] Integration of PV panels in façades is considered due to the reduced roof surface per dwelling unit. [•] Apartment buildings are more energy efficient for heating and cooling than single houses. [•] With optimal roof design, a building of three stories can reach a net-zero energy status. [•] Above three floors, facades should be exploited to enhance energy production. [ABSTRACT FROM AUTHOR]