PPA signed for ADB-backed 6MW facility in Tonga

March 21, 2019
Facebook
Twitter
LinkedIn
Reddit
Email
The PV project is one of a string Tonga is building to hit 50% renewable target next year (Credit: ADB)

Auckland-based developer Sunergise has bagged a 25-year PPA for a 6MW PV project it will build in the Polynesian kingdom of Tonga.

The facility planned on Tongatapu island, to be built through a public-private partnership (PPP), has been described as the second largest PV project in the Pacific and the largest across the ocean’s southern reaches.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

With entry into operations slated for April 2020, the plant will be split across three sites and generate 10GWh, to be sold to state-owned utility Tonga Power Limited (TPL).

“This solar plant will form an integral part of TPL’s Renewable Energy Program,” said Tongan Public Enterprises minister Saia Ma’u Piukala after the PPA signing ceremony at the kingdom’s capital Nuku’alofa. The project, he explained, will provide Tonga with 15% of its estimated power demand by 2020.

The PV project is one of a string TPL is developing across Tonga, a climate-vulnerable archipelago nation working towards a 50% renewable power target by 2020 with support of development institutions. To date, the utility has helped deliver the Maama Mai and Mata 'o e La'a projects (each 1MW), among others.

The Asian Development Bank (ADB) recently pledged a US$12.2 million grant to the Tonga Renewable Energy Project, and will be managing funds the Green Climate Fund (US$29.9 million) and Australia's government (US$2.5 million) have committed to the programme.

With the 6MW plant, ADB’s contribution was to help arrange the tender process that saw Sunergise chosen as the developer. “[The tender] resulted in a very competitive feed-in tariff for TPL, and establishes a benchmark for future power generation PPP transactions across the region,” said Masayuki Tachiiri, a director at ADB’s South Pacific subregional office.

A 2.8MW PV project was also commissioned in Tonga in 2017.

Read Next

January 7, 2026
Oil and gas explorer Pilot Energy has entered into a binding head of agreement with SN Energy Australia for the joint development of a new solar-plus-storage project at Three Springs, Western Australia.
January 6, 2026
Potentia Energy has raised AU$830 million in portfolio financing to support its renewable energy operations and development across Australia.
January 6, 2026
The Colombian National Environmental Licensing Authority (ANLA) has granted environmental approval to a 200MW solar PV project in the Chiriguaná area of Northern Colombia.
January 6, 2026
The Chinese government has released a range of policy measures to strengthen intellectual property (IP) protections in the country’s solar PV industry.
January 5, 2026
Israeli renewable energy developer Nofar Energy will acquire an almost 1GW US utility-scale solar portfolio from bankrupt IPP Pine Gate Renewables.
December 31, 2025
The government of Bahrain has laid the foundation stone for a 100MW solar power plant in the Al Dur area of the Southern Governorate. 

Upcoming Events

Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
November 24, 2026
Warsaw, Poland