A case study by the Government of Tonga, SPC, GIZ as part of the regional programme Coping with Climate Change in the Pacific Island Region (CCCPIR). Case study on the outer islands solar electrification in Tonga. Over the years, Tonga’s Energy Planning Unit — now known as the Energy Department under the Ministry of Meteorology, Energy, Information, Disaster Management, Environment, Climate Change and Communications — has implemented more than 15 donor-funded solar electrification projects in the outer islands, committing over TOP 24 million (or ~USD 11.6 million) for the development of rural electrification programmes.