Solo provider: Tonga Power Limited (connecting all of Tonga). Looking after all the energy grids in Tonga. With diesel generators, supplying 91% of its overall grid. In 2016, Tonga''s total
This review found OIREP to be of direct relevance to the needs and ambitions of Tonga given the importance the government and people place on climate adaptation measures and enhancing
The Tonga Energy Road Map 2021-2035 (TERMPLUS) is Tonga''s national energy policy and 15-year roadmap, to achieve ambitious renewable energy targets of 70% and 100%
The Sunergise Tongatapu Solar Farm is the largest in the South Pacific. It was built as part of a power purchase agreement between Sunergise New Zealand Limited, a Todd
6Wresearch actively monitors the Tonga Captive Power Generation Market and publishes its comprehensive annual report, highlighting emerging trends, growth drivers, revenue analysis,
Our current electricity generation method heavily relies on imported fossil fuels from overseas to generate electricity for Tonga. This means that every time countries from overseas raises fossil fuel prices, our electricity prices
The Tonga Energy Road Map 2021-2035 (TERMPLUS) is Tonga''s national energy policy and 15-year roadmap, to achieve ambitious renewable energy targets of 70% and 100% renewable electricity by 2025
Producing energy since August this year, and providing power for up to 10,336 households, the Solar Farm is helping The Government of Tonga pursue its National Energy Roadmap plans to
The Sunergise Tongatapu Solar Farm is the largest in the South Pacific. It was built as part of a power purchase agreement between Sunergise New Zealand Limited, a Todd Corporation solar company and
e resource potential Solar PV: Solar resource potential has been divided into seven classes, each representing a range of annual PV output per unit of c. pacity (kWh/kWp/yr). The bar chart
Our current electricity generation method heavily relies on imported fossil fuels from overseas to generate electricity for Tonga. This means that every time countries from overseas raises
As Tonga''s renewable energy partner, GridMarket is working with the local government, Tonga Power Limited, and the United States Trade and Development Agency to bring clean, resilient,
Historically, the average for Tonga from 1980 to 2023 is 0 billion kilowatthours. The minimum value, 0 billion kilowatthours, was reached in 1980 while the maximum of 0.01 billion

This has contributed to the Tongan economy and electricity consumers being exposed to high and volatile electricity prices due to fluctuations in the price of oil internationally. According to UK-based aggregate website Cable, Tonga's electricity is the 13th most expensive in the world, at an average cost of USD 0.35 per kilowatt hour (kWh).
This means that little more than 30,000 people are spread across 35 islands, presenting acute issues in terms of the provision of modern infrastructure. At OIREP commencement, the ADB estimated that 89% of all households across Tonga had access to electricity.
The project achieved its proposed impact, in terms of helping Tonga reduce its dependence on imported fossil fuel for power generation with OIREP assets estimated to have reduced diesel usage by 0.5 million litres annually. Central to the project outcome was the provision of on-grid and off-grid generation solar power at reduced cost.
The Sunergise Tongatapu Solar Farm is the largest in the South Pacific. It was built as part of a power purchase agreement between Sunergise New Zealand Limited, a Todd Corporation solar company and Tonga Power Limited, with support from the Asian Development Bank.
Australia also has a long history of engagement in relation to helping secure Tonga’s outer island energy needs. In the early 2000s, Australia funded the Ha’apai Outer Islands Electrification project (HOIEP), which involved the installation of diesel-powered generators and electrical reticulation on four islands in the Ha’apai group.
OIREP’s on-grid work was always a matter of laying the foundations for further investment in renewables and enjoyed the ease of working through one implementing partner – Tonga Power Limited – who were incentivised to help ensure the program succeeded given they will manage all on-grid assets post-project.
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