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Industry letters indicate that India's stricter green energy rules could hurt clean energy investments

A review of industry correspondence on Wednesday revealed that India's proposed rules, which would require renewable energy producers to adhere strictly to their green energy promises to the grid, will squeeze company earnings and reduce investment in the sector.

In its draft, published in September 2025 by the Central Electricity Regulatory Commission(CERC), tighter regulations were proposed for wind and solar energy producers under the Deviation Settlement Method.

The new framework will gradually reduce the gap between what electricity producers promise to provide and what they actually produce.

The formula for calculating these deviations is being revised starting April 2026. Each year, the tolerance margin will shrink, until 2031, when renewable generators are treated the same as conventional power plants.

As renewables make up a greater share of India's electricity mix, the goal is to encourage renewable generators improve their forecasting accuracy and schedule to ensure grid discipline and reliability.

Industry groups have warned that the proposed rules could harm wind energy projects as they depend on "unpredictable weather" unlike solar, gas and coal-fired plants which can modulate output.

The Wind Independent Power Producers Association, in a letter sent to the CERC and reviewed by, stated that "these penalties could result in huge losses, particularly for older projects which were built under different regulations."

According to the group, some wind power projects may lose as much as 48% of revenue.

The body filed a lawsuit in April to challenge the regulations of last year on deviations in power supply and planning. They argued that the proposed modifications could lead to a substantial financial burden for developers.

In a letter sent to the CERC by the National Solar Energy Federation of India (NSEF), the group warned that the new rules could undermine the viability of projects and discourage future investments into India's clean-energy sector.

India wants to expand its renewable energy base. It aims to double the non-fossil power capacity of India to 500 gigawatts, as part its energy transition goals. (Reporting and editing by Sethuraman Nandy).

(source: Reuters)