"India's renewable-energy diplomacy has moved from hosting investment summits to building global coalitions." Discuss with reference to Bharat RE 2026 and the International Solar Alliance.

India's renewable-energy diplomacy began with RE-INVEST, an investors' meet focused on raising capital. Its successor, the Bharat Renewable Energy Summit & Expo 2026, is RE-INVEST renamed and widened [2]. It is held alongside the 9th ISA Assembly and the 4th International Conference on Green Hydrogen [1]. The shift towards coalitions is real, but it adds to the summit model rather than replacing it.

Phase I: Summits as investment marketplaces

• RE-INVEST 2015 closed with 266 GW of commitments [3]. RE-INVEST 2024 in Gandhinagar drew ₹32.45 lakh crore as non-binding Shapath Patra [4].
• The diplomacy was transactional: raising capital for the 500 GW non-fossil-by-2030 target.

Phase II: Building coalitions

• Institutional anchor: The PM inaugurated the first ISA Assembly in 2018 [5]. In 2020 the Framework Agreement was amended to open membership to all UN members [6], making a sun-belt grouping near-universal.
• Leadership: India is ISA Assembly President, with France as Co-President, for 2024–26 [7]. At the 8th Assembly, held ahead of COP30, the President called on the Global South to lead inclusive solar development [8].
• Convergence at Bharat RE 2026: 130+ countries and 40+ Ministers attend, with G2G meetings and ministerial discussions held alongside B2B deals [1].
• Technology partnerships: There are 9 Country Partners, including the EU, Germany and France [1]. India is also pursuing its aim to become a global green-hydrogen hub [9].

Limits: continuity, not a clean break

• Investment is still central: B2B/B2G formats and 400+ exhibitors [1]. "Layering" describes the change better than "moving from".
• All the Country Partners are European/OECD [1]. The Global South, which India claims to lead, is missing from the partner list.
• Credibility at home: Pledges are not binding [4]. India still imports polysilicon, ingots and wafers [10], which weakens its claim to lead supply-chain coalitions.

India now runs a single platform that combines investment, ISA coalition-building and hydrogen partnerships. To keep this credible, India should publicly track how pledges turn into projects, build up domestic upstream manufacturing, and bring Global South partners into the summit itself. That would match its Panchamrit commitments with leadership under SDG 7 (clean energy) and SDG 17 (partnerships).