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Daily Renewable Energy Wrap-Up: Grid India Seeks Full T-GNA Margin, Rajasthan Drafts BESS Rules

Grid-India Proposes Amendments to T-GNA Procedure

The Grid Controller of India (Grid-India) has proposed key amendments to the Central Electricity Regulatory Commission’s (CERC) draft procedure for granting Temporary General Network Access (T-GNA) to the interstate transmission system. The proposal recommends maintaining sufficient transmission margins to enable scheduling of power generation projects up to their full T-GNA capacity. Grid-India also suggested that entities registered under the National Open Access Registry (NOAR) for short-term access must now register with their respective Regional Load Dispatch Centers (RLDCs) for T-GNA clearance. Stakeholders can submit feedback by October 30, 2025.

Rajasthan BESS Draft Rules

The Rajasthan Electricity Regulatory Commission (RERC) has released draft rules to govern the planning, procurement, deployment, and operation of battery energy storage systems (BESS) across the state. The proposed RERC (Battery Energy Storage Systems) Regulations, 2025, will apply to all licensees, generation companies, aggregators, and storage service providers involved in Rajasthan’s renewable energy sector. Stakeholder comments are open until November 14, 2025.

As India’s renewable projects continue to face climate and grid challenges, Gentari India’s Asset Management Head, Rashmi Shringi, emphasized that hybrid designs, predictive maintenance, and diversified procurement strategies are helping to improve asset performance and reduce downtime across its portfolio.

To address seasonal grid instability, the CERC also proposed interim measures for regional and state load dispatch centers, emphasizing the importance of consistent demand forecasting and resource adequacy reporting — areas where only southern and western regions (excluding Maharashtra) currently show regular compliance.

Revised MNRE Guidelines for PM Surya Ghar

The Ministry of New and Renewable Energy (MNRE) has updated the operational guidelines for the PM Surya Ghar: Muft Bijli Yojana under the utility-led aggregation (ULA) model. Under the revised rules, the central financial assistance (CFA) will now be released only after successful installation, inspection, and commissioning of rooftop solar systems — removing the provision for advance payments.

REIL Rooftop Solar Bids

Rajasthan Electronics and Instruments Limited (REIL) has invited bids to install 22 MW of rooftop solar systems on government buildings across various states and union territories under the renewable energy service company (RESCO) model. Bids will close on November 7, 2025, and open the following day.

Project Completions

NTPC Green Energy Limited (NGEL) has commissioned 37.95 MW of its 300 MW solar project in Khavda, Gujarat, bringing total operational capacity under SECI’s 1,200 MW hybrid project (Tranche-V) to 262 MW.

ACME Solar Holdings has also completed 28 MW of its 100 MW wind project in Surendranagar, Gujarat. The project, financed by the Power Finance Corporation, was executed using in-house EPC and equipped with SANY 4 MW turbines.

Private Sector Funding

Soleos Solar Energy has raised Rs 200 million (~$2.26 million) from Gujarat Venture Finance to expand its EPC and IPP operations, enhance O&M systems, and invest in digital performance monitoring platforms.

Financial Updates of Renewable Firms

• JSW Energy reported Q2 FY26 revenue of Rs 53.61 billion (~$609.9 million), marking a 55% year-on-year increase driven by renewable capacity additions and O2 Power integration.
• Vikram Solar achieved a 93.7% YoY revenue rise to Rs 11.1 billion (~$126.3 million), along with a 1,636% profit increase to Rs 1.28 billion (~$14.6 million).
• Solarworld Energy Solutions (Uttar Pradesh) posted a 241.8% YoY rise in income to Rs 805.5 million (~$9.16 million), with net profit growing 386.7%.

Global Renewable and Copper Market Outlook

Globally, the International Energy Agency (IEA) forecasts 4,600 GW of new renewable capacity additions by 2030, with solar power contributing nearly 80% of the total. However, the projection is 5% lower than last year’s due to shifting market dynamics and evolving policy frameworks.

Meanwhile, Wood Mackenzie’s latest report, “High-Wire Act: Is Soaring Copper Demand an Obstacle to Future Growth?”, projects global copper demand to increase by 24% to 42.7 million tons per year by 2030, driven by electrification and infrastructure expansion. The report also cautions about potential supply constraints in the coming years.