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How India used the International Solar Alliance to show its diplomatic heft and create a new market

The ISA proved to be a diplomatic win for India in a multipolar world to forge a new treaty-based international organisation. India not only reached out to “solar-rich” developing countries, but actively brought on board developed countries and other non-state actors with keen financial interests in untapped markets

The minister also stated that climate and energy sustainability initiatives adopted by India such as the International Solar Alliance and Global Biofuel Alliance have become global platforms for affordable and clean energy.Ten years on, even if the collective progress under the Paris Agreement itself is lackluster, the climate architecture it laid down allowed India to stake a claim to a leadership role on the global stage.
6 min readDec 24, 2025 03:28 PM IST First published on: Dec 24, 2025 at 03:28 PM IST

By Vyoma Jha

As this year’s climate talks drew to a close, the main outcome in the Belém Political Package — Global Mutirão — celebrated the 10-year anniversary of the Paris Agreement in reaffirming the commitment of all countries to multilateralism in the fight against climate change. Adopted in December 2015, the Paris Agreement was a milestone in multilateral climate negotiations as all countries agreed to a legally binding international treaty on climate change. This December also marks a decade of the International Solar Alliance (ISA), the first treaty-based international organisation headquartered in India.

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