Tamil Nadu’s industrial sector is increasingly looking for ways to reduce electricity costs, improve energy security, and meet decarbonisation expectations from customers, investors, and global supply chains. For eligible commercial and industrial consumers in Tamil Nadu, renewable energy procurement through the open access route offers a practical way to purchase cleaner electricity directly from renewable energy generators, instead of relying only on grid supply.
The Energy Open Access Tool is a Tamil Nadu–specific decision-support platform that helps industries undertake a rapid cost-benefit analysis of accessing renewable energy through open access. The tool enables users to explore different combinations of solar power, wind power, and Battery Energy Storage Systems based on Tamil Nadu’s regulatory context, renewable energy resource availability, and applicable open access cost components.
Users can assess scenarios based on different objectives, such as maximising financial savings, reducing electricity-related emissions, improving renewable energy share, or balancing cost and carbon benefits. By entering key inputs such as electricity consumption, tariff, location within Tamil Nadu, demand profile, and applicable open access charges, the tool provides indicative results on optimal solar, wind, and storage capacities, expected renewable energy generation, cost savings, payback period, grid dependence, and emissions reduction.
For industries in Tamil Nadu with high daytime loads, solar can offer strong cost benefits, while wind can complement solar by generating during different time periods and seasons. Battery storage can further improve renewable energy use by storing excess generation, shifting consumption, and improving the match between clean energy supply and industrial demand.
The tool is especially useful for energy managers, sustainability teams, plant heads, finance teams, renewable energy developers, and industrial associations evaluating clean energy procurement options in Tamil Nadu. While it does not replace a detailed feasibility study, regulatory review, or commercial due diligence, it provides a practical first step for industries in Tamil Nadu to understand whether open access renewable energy can reduce costs, lower emissions, and support a more competitive low-carbon transition.
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