i have an assignment to write about net zero energy buildings and also to write

i have an assignment to write about net zero energy buildings and also to write about case studies. i attached the assignment requirements and the lecture to help you. please follow each point in the assignment requirements. (one point: it requests 3 case studies, please do 1 only). please ensure to have it detailed not overview only and to have pictures to support all the technical point. and please ensure you cite everything even pictures and figures.
regarding how many sources can be used, i put 15 sources but you can use as much as you need and see necessary