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.Can Australia help secure Tonga's outer island energy needs?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.
How many people have access to electricity in Tonga?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.
How can oirep help Tonga's remote island communities?However, significant needs and opportunities exist to further expand renewable energy systems on outer islands. Less tangible, but also important is the role played by OIREP in consolidating Tonga’s social contract with remote island dwelling communities, by allowing for enhanced and more reliable access to electricity.
Who commissioned a new mini-grid system in Tonga?NIUATOPUTAPU, TONGA (26 July 2023) — Tonga’s King Tupou IV, government officials, and the people of Niuatoputau community today attended a commissioning ceremony for a new mini-grid generation system and distribution network, funded under the ADB-supported Outer Island Renewable Energy Project.
Why is electricity so expensive in Tonga?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).
How many people live in Tonga?Just 36 of Tonga’s islands are inhabited, with more than 70% of the total population residing on just one island – Tongatapu. This means that little more than 30,000 people are spread across 35 islands, presenting acute issues in terms of the provision of modern infrastructu
Jul 10, 2025 · 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
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Jul 31, 2024 · OIREP''s focus was installation of solar energy capabilities to nine outer islands of Tonga, with the aim of increasing the reliability, efficiency and affordability of power on these
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Jul 28, 2023 · His Majesty, King Tupou VI commissioned the Niuatoputapu Solar Hybrid System & Mini Grid on July 26, 2023. The project is part of the Outer Islands Renewable Energy Project
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Jul 26, 2023 · Tonga''s King Tupou VI, government officials, and the people of Niuatoputau community today attended a commissioning ceremony for a new mini-grid generation system
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Jul 10, 2025 · 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
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May 28, 2025 · The system, part of the Tonga Renewable Energy Project (TREP), delivers 73.08kWp of solar energy, supported by a 1,313.28kWh battery storage system and a modern
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Nov 21, 2024 · The Tonga Energy Road Map Plus 2020–2035 outlines strategies to transform Tonga''s energy sector into a green and clean system, targeting 100 per cent electricity
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The Tonga Outer Island Renewable Energy Project (OIREP) will construct Solar Photovoltaic (PV) power plants on 8 outer islands. The "on-grid" portion will be allocated to Ha''apai and ''Eua,
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Jun 4, 2025 · Tonga Energy Background Current energy grids: Tongatapu, Vava''u, Ha''apai, Eua, and Niua Toputapu (recently turned to solar): powered by diesel generators Solo provider:
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Sep 7, 2023 · The Tonga Outer Islands Solar Electrification Program has been in operation since 1987, covering the Vava''u and Ha''apai island groups. Almost 90% of the population of these
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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.
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.
However, significant needs and opportunities exist to further expand renewable energy systems on outer islands. Less tangible, but also important is the role played by OIREP in consolidating Tonga’s social contract with remote island dwelling communities, by allowing for enhanced and more reliable access to electricity.
NIUATOPUTAPU, TONGA (26 July 2023) — Tonga’s King Tupou IV, government officials, and the people of Niuatoputau community today attended a commissioning ceremony for a new mini-grid generation system and distribution network, funded under the ADB-supported Outer Island Renewable Energy Project.
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).
Just 36 of Tonga’s islands are inhabited, with more than 70% of the total population residing on just one island – Tongatapu. 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.
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