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India’s Solar Surge Peaks In March As Year-End Commissioning Rush Drives Record Additions Photograph: (Archive)
India created new records in the renewable landscape with its record 50 GW of renewable energy solar capacity additions, primarily driven by solar power. Solar energy capacity additions seem to be increasingly being driven by a year-end commissioning push, with March emerging as the most critical month for project execution, according to data from the Ministry of New and Renewable Energy (MNRE).
We analysed the capacity additions of the country in March in the last five years which hinted at the last month rush of financial year. The data revealed that in the last month of any financial year in the last 5 years, March 2026 remained the most produtive. In March 2026, India added around 6.6 GW of solar capacity, the highest ever recorded in a single month, marking a sharp jump from about 3 GW in March 2025 and surpassing the previous high of roughly 6.2 GW in March 2024.
The trend underscores a consistent pattern over recent years where developers accelerate project commissioning in the final month of the financial year to meet contractual and regulatory deadlines.
The data suggests that this “March effect” is becoming structural. Over the past five years, March has repeatedly accounted for a disproportionate share of annual additions, with developers racing to align project completion with financial year timelines. Industry executives say this is largely driven by power purchase agreement milestones, transmission connectivity conditions and financial closure requirements, which often incentivise commissioning before March 31 to avoid penalties or delays in revenue realisation.
A closer look at FY2025-26 installations shows a steady build-up through the year before a sharp spike in the final quarter. Monthly additions started at about 2.9 GW in April 2025 and gradually increased to around 3.9 GW by September. The momentum strengthened in the second half, with installations rising to 4.6 GW in November before moderating briefly in December. The final quarter saw another surge, with January contributing about 4.8 GW, February around 3 GW and March alone delivering a record 6.6 GW.
This back-loaded growth pattern meant that nearly 35–40% of the total annual solar capacity additions were commissioned in the January–March period. Overall, India added an estimated 44.6 GW of solar capacity during FY2025-26, making it the country’s highest-ever yearly addition and reinforcing its position as one of the fastest-growing solar markets globally.
While the surge reflects strong execution capabilities, it also highlights structural inefficiencies in project timelines. Analysts note that delays in land acquisition, transmission readiness and supply chains often push commissioning into the final quarter, resulting in a compressed execution window. The concentration of additions in March can also pose challenges for grid integration and planning.
Going forward, the industry is expected to continue witnessing strong year-end commissioning cycles, particularly as India scales up hybrid and storage-linked renewable projects. However, a more even distribution of installations across the year would improve execution efficiency and reduce risks associated with last-minute project completions.
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