This report highlights two underutilized but fully implementable technologies that efficiently integrate heat and electricity systems, provide flexibility and enhance energy security. It examines what restricts co‑generation and efficient district heating and cooling systems that can help de-carbonize the energy system.

This Guidebook is intended to build knowledge about solar water heating fee-for-service program structures among electric utility companies and others, with the goal of facilitating such programs to increase solar water heating for residential, commercial, and industrial applications. It focuses on the Caribbean region.