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.
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 did the oirep project impact Tonga?
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.
Why did oirep work with Tonga Power Limited?
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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Objectives: To discuss: The recent installation of solar mini-grid systems on three remote islands in Tonga: Niuafo’ou, O’ua, and Mo’unga’one. And some case studies from Other Pacific Island
Developing an open source power system model
Over the past 6 months, we have been working on a pro bono engagement with Tonga Power Ltd (TPL) to help them build an open source power system model for the Tongatapu network, the largest
Niuatoputapu solar hybrid system & mini grid commissioned
The commissioning of the Niuatoputapu Solar Hybrid System & Mini Grid is a significant milestone for Tonga. It brings the country’s total electricity accessibility to around 99%.
Australia s contribution to the multi-donor Tonga Outer
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 islands.
Solar Energy Tonga
We’re committed to increasing solar energy in Tonga. There are roofs all over the islands that could become renewable energy generators, and a huge opportunity for growing solar for our community.
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The project will supply secure, environmentally sustainable energy to homes, schools, and other public facilities, on these islands. It will quantify the solar resource and facilitate the integration
Development of an open source power system model for Tonga
Over the past 6 months, we have been working on a pro bono engagement with Tonga Power Ltd (TPL) to help them build an open source power system model for the Tongatapu network, the
Solar mini-grids power up remote Tongan islands
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
Developing an open source power system model for Tonga
Over the past 6 months, we have been working on a pro bono engagement with Tonga Power Ltd (TPL) to help them build an open source power system model for the
Niuatoputapu solar hybrid system & mini grid commissioned
The commissioning of the Niuatoputapu Solar Hybrid System & Mini Grid is a significant milestone for Tonga. It brings the country’s total electricity accessibility to around 99%.
Solar Energy Tonga
We’re committed to increasing solar energy in Tonga. There are roofs all over the islands that could become renewable energy generators, and a huge opportunity for growing solar for our
Tonga ia solar power
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

Solar Container Energy Discussion
Share your thoughts on solar container power and energy storage solutions.