Overall Objective

GGGI is working with Tonga to implement its NDC and build climate resilience through the review and update of the Tonga Energy Road Map and the preparation of a Low Emission Development Strategy (LEDS). GGGI will further work with the Tongan Government to identify and implement opportunities for inclusive, low carbon and resilient green growth in Tonga in the energy, transport, and green cities sectors.

Strategic Outcome Targets

GHG Reductions In Progress
Green Jobs In Progress
Sustainable Services In Progress
Enhanced Adaptation to Climate Change In Progress
Katerina Syngellakis

Pacific Regional Representative

Resource Partner

GGGI Core Funding

Government Counterpart

Ministry of Meteorology, Energy, Information, Disaster Management, Climate Change and Communications


The Kingdom of Tonga is a Small Island Developing State (SIDS) in the Pacific region that is vulnerable to the impacts of climate change, including cyclones, coral bleaching, and changing rainfall patterns.

Tonga is committed to building greater resilience to the increasing risks of climate change through sustainable development. The Kingdom’s Strategic Development Framework 2015-2025, and 2015 Nationally Determined Contribution (NDC) to the United Nations Framework Convention on Climate Change (UNFCCC), express a commitment to mitigate climate change and pursue inclusive and equitable economic growth. With a small export economy, risks to agriculture, including changing rainfall patterns, present a significant threat to Tonga’s economic development. While high cost of imported fossil fuel presents a constraint to energy use for economic growth.


Access to reliable and affordable clean energy is a key part of building Tonga’s resilience to climate change. The Tonga Energy Road Map 2010-2020 (TERM) highlights that, in 2000, 75 percent of Tonga’s energy supply was from imported petroleum fuels. In the power sector, grid supplied energy accounts for 98 percent of electricity, all of which was generated using diesel in 2000. While nearly 90 percent of households are connected to the grid, and in rural areas most households have been electrified using solar home systems and micro-grids, access to affordable electricity is an issue, particular due to Tonga’s reliance on imported fuels and the high upfront capital cost of switching to renewable energy sources.

Under the TERM and NDC, Tonga has committed to 50 percent renewable energy generation by 2020, with landfill gas, biomass, wind, and solar energy considered as sources. It is essential that Tonga moves away from reliance on fossil fuels, diversifies its energy generation options, and develops renewable energy resources. Since 2000, a series of grid-connected solar and wind energy projects have introduced a share of approximately 11 percent renewable electricity in the Tongan grid with plans for further solar, wind and storage technologies to continue to boost the share of renewables and reach the 50 percent renewable energy generation target by 2020. However, there still remains work to be done given Tonga is also looking to increase its ambition and commit to up to 75 percent renewable electricity generation by 2030.

GGGI is supporting Tonga to pursue inclusive green growth and build resilience to climate change with a focus on enhancing infrastructure, improving energy security, increasing renewable energy and energy efficiency technologies, including for the transport sector, and reducing dependence on fossil fuels.


News • October 15, 2019

GGGI launches multimedia knowledge sharing platform to highlight Pacific SIDS transition to renewable energy

SEOUL – October 15, 2019 – The Global Green Growth Institute (GGGI) today launched a new platform, Powering Pacific Green Growth, to share knowledge and raise visibility about the steps and successes countries in the Pacific region are making to achieve Paris Agreement commitments and SDGs through the application and scale-up of clean, sustainable energy […]

News • August 13, 2019

GGGI supporting development of Tonga’s Long Term – Low Emissions Development Strategy

On 02 August, 2019, the Global Green Growth Institute (GGGI) in partnership with ClimateWorks Australia conducted a scoping mission in Nuku’alofa,Tonga to develop Tonga’s Long Term – Low Emissions Development Strategy (LT – LEDS). Tonga became a member of GGGI in October 2018, and this initiative is one of GGGI’s first technical assistance projects for […]

News • December 18, 2018

GGGI Welcomes Tonga as its Twenty-ninth Member

Suva, Fiji – 18 December – On December 17, the Global Green Growth Institute (GGGI) welcomed the Kingdom of Tonga as its twenty-ninth Member and fifth country from the Pacific, committing to jointly deliver inclusive, environmentally sustainable economic growth in the country. The membership ceremony was held during GGGI’s Seventh Session of its Assembly and Eleventh […]


NDC Implementation Roadmap Development: Guidelines for Small Island Developing States Fiji  • Kiribati  • Papua New Guinea  • Tonga  • Cross Cutting
NDC Implementation Roadmap Development: Guidelines for Small Island Developing States

Fiji  • Kiribati  • Papua New Guinea  • Tonga  • Cross Cutting  • Vanuatu