Energy optimization based on project life cycle (PLC): a literature reviewUda Subrata Aditama Kittie Aidon, Frieda, Desriantomy, Meilawaty Okta, Supiyan, Devia and Saritha Kittie UdaE3S Web Conf., 467 (2023) 04008DOI: https://doi.org/10.1051/e3sconf/202346704008