PPA signed for ADB-backed 6MW facility in Tonga

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

July 31, 2026
FIC has acquired Perfect Power, developer and owner of the Jaguar Energy Centre, a planned 1.15GW solar and battery storage platform.
July 31, 2026
The Colombian Ministry of Mines and Energy has awarded 995MW of solar PV and nearly 100MW of battery energy storage system (BESS) in a clean energy procurement auction.
July 31, 2026
German solar research centre the Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) has signed an agreement with Himachal Pradesh University to pursue research into floating solar PV.
July 31, 2026
Avaada has secured approximately US$1.3 billion in debt to fund a 2.15GW portfolio of hybrid and solar projects in Gujarat and Maharashtra.
July 31, 2026
First Solar reported net sales of US$1.06 billion for Q2 2026, down 4% year-on-year, while reaffirming its full-year 2026 guidance.
July 31, 2026
German energy company RWE has sold its US distributed clean energy generation business to Goldman Sachs.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
April 20, 2027
Istanbul, Türkiye