Tonga is making tangible progress toward its renewable energy targets with the rollout of solar-powered mini-grid systems across its outer islands, in a bold move to reduce its dependence on expensive diesel imports and improve electricity access for remote communities. . Reduction in Diesel Consumption: With the introduction of the solar grid system, diesel consumption has significantly declined, as shown on the July 22 – Jun 23 period. Total Renewable Energy Capacity is now contributing 13. The “on-grid” portion will be allocated to Ha'apai and 'Eua, while the “off-grid” portion will incorporate 'Uiha, Nomuka, Ha'ano, Ha'afeva, as well as Niuatoputapu and. . The purpose of this Independent Completion Review of the Tonga Outer Islands Renewable Energy Project (OIREP) was to reflect on and assess OIREP's performance, and the contribution of Australia to the project. The review considered issues related to the overall project's relevance, effectiveness. . A $53. 2 million minigrid was commissioned on Niuafo'ou, Tonga's northernmost island, to provide clean, reliable power 24 hours a day. A new hybrid minigrid that will provide clean, reliable and efficient energy. . In the presence of Their Majesties King Tupou VI & Queen Nanasipau'u, The King & Queen of The Kingdom of Tonga, Tonga's new 6MW solar power plant was officially launched today at Fualu, Tongatapu by Prime Minister of the Kingdom of Tonga, Hon.