Greening the Islands Foundation

GTI 100% RES Islands launched at the New York Climate Week

The global debate in preparation to COP28 is focused on the key role of renewables in decarbonising the planet and the need to target 100% renewables by 2050. There are already many examples of systems going 100% renewable for a limited time, but stable 24/7 renewable energy systems still seem distant on the horizon.


Islands can once again originate best practices, demonstrating that a transition to fully renewable energy systems is technically and economically feasible. In this context, Greening the Islands (GTI) has launched the 100% RES Islands initiative at the New York Climate Week, in occasion of the Climate Talks hosted by the Blue Planet Alliance on September 22. The two organizations have also signed a cooperation agreement to join forces towards expediting the complete decarbonization of islands worldwide.


In fact, Islands, with their distinctive energy landscapes, stand as ideal testbeds to showcase the technical and economic feasibility of transitioning to 100% renewable energy systems, starting from the decarbonization of the power sector. With this pivotal endeavour, GTI aims to identify tangible projects in collaboration with the local island stakeholders. Works have started on the islands of La Gomera (Canary Islands) and Rodrigues (Mauritius) and the interim results will be disseminated at COP28, while the complete final reports will be presented at the GTIO Summit 2024.

Charting a Course Across Frontrunner Islands Worldwide

The 100% RES Islands Initiative will involve islands from diverse regions across the globe, including the Caribbean, Europe and the Atlantic Ocean, the Indian Ocean, and the Asia-Pacific. These regions exhibit diverse characteristics and climates, which are reflected in various types of renewable electricity mix layouts.



The initiative will include a Ukrainian town, Ladyzhyn, marking a pioneering effort to transpose the island-based model to mainland regions unlocking energy security. Furthermore, this will help expedite its green transition from coal-fueled to renewable electricity, bypassing the usual intermediate step of natural gas (NG).



Additionally, an island in the United Arab Emirates, the host of COP 28, will serve as a symbol of inspiration, amplifying awareness regarding islands as crucial laboratories in the battle against climate change.



Two islands have already joined the Initiative:

      • Rodrigues: this island is located at the centre of the Indian Ocean and its remoteness makes it an ideal case study.

      • La Gomera: It is one of the smallest of the Canary Islands. Its characteristics might include also RES other than solar and wind such as geothermal and wave energy.

    Advancing Island Decarbonization with Methodical Precision:


    The “100% RES Islands Initiative” boasts a meticulous methodology designed to ensure its success:


    Assessment and Modelling:



    a. Evaluation of Readily Available Data: Robust research, encompassing existing studies and data, is the starting point of this initiative. The assessment includes an evaluation of suitable land and maritime space, among other vital constraints.



    b. Electricity Demand Assessment and Forecast: A comprehensive demand assessment will be executed, considering the potential future integration of complementary systems in sectors such as water and mobility. This approach harnesses the synergies between renewable energy and other critical sectors.



    c. Renewable Resources Assessment: The initiative will evaluate the potential of various renewable energy sources (RES), tailoring the renewable mix to each island’s unique characteristics.



    d. Scenarios Portfolio Development with Technical and Economic Analysis: GTI, in collaboration with its partner “Instituto Tecnológico de Canarias” (ITC), will construct multiple scenarios aiming for 100% renewable electricity penetration. These scenarios will consider in grid stability, requisite power grid upgrades, storage solutions, energy technologies, and associated costs.






    a. Selection of the Optimal Renewable Energy Mix Scenario: Identified scenarios will be presented to IMSCs for deliberation, with GTI’s expert guidance. A comprehensive roadmap for implementing the chosen scenario will be meticulously designed, accounting for impacts, constraints, costs, and other pertinent factors.



    b. Creation of Investment Teasers: where feasible, GTI will craft investment teasers for specific projects within the selected scenarios. These teasers will provide essential financial and technical information, enhancing their appeal to potential public and private investors.



    c. Island Teasers Map: The GTI website will feature an interactive island map, offering comprehensive information about available teasers, including key investment details.



    From Teasers to financing


    Investment teasers will play a pivotal role in securing funding for the projects identified. By providing transparent and reliable financial and technical data, they bolster the attractiveness of projects to potential investors, both public and private.



    Additionally, the initiative recognizes the indispensable role of grid infrastructure and will feature specific teasers highlighting necessary upgrades to support the energy transition. In instances where project localization is not yet feasible, the scenarios portfolio will provide island governments and municipalities with essential technical documents to initiate calls and participate in tenders for financing identified projects.



    GTI will report assessment results and teasers to its Observatory Leading Committees and members to gather valuable feedback, making the “100% RES Islands Initiative” a pivotal milestone in the global decarbonization race.

    GTI Foundation

    GTI Foundation

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