Ereshchenko, ViktoriyaPopic, Elena2024-12-232024-12-232024-12-23https://hdl.handle.net/10986/42581The brief is the first in a two-part series that provides an overview of the electricity sector's demand and supply side environmental regulations. This brief focuses on supply-side regulations and investigates their role in promoting energy efficiency and renewable energy integration. Energy efficiency and renewable energy are recognized as main contributors to sustainability and resilience within electricity supply systems. Yet the importance of supply-side regulations has been studied to a lesser extent in the existing literature. This brief aims to help fill this gap. Analysis of global data suggests that comprehensive energy efficiency mandates for utilities are associated with lower transmission and distribution losses and, thus, higher efficiency in the electricity supply system. Additionally, the analysis reveals a positive and significant association between robust regulations on electricity network connection and use, and the share of renewable energy in electricity capacity. These results underscore the importance of policies promoting energy efficiency programs and establishing robust regulatory frameworks governing network connection and use. The second brief in this two-part series will cover demand-side policy measures on environmental sustainability and will also present new B-READY data on the environmentally sustainable use of energy.en-USCC BY-NC 3.0 IGOAFFORDABLE AND CLEAN ENERGYSUPPLY-SIDE REGULATIONSENERGY EFFICIENCYENERGY DEMANDBriefWorld Bank10.1596/42581https://doi.org/10.1596/42581