Driving India’s Renewable Energy Future: A Closer Look at RE-RTC Solutions to Achieve 500 GW by 2030, In Light of CEA Report

India’s ambition to achieve 500 GW of non-fossil fuel-based capacity by 2030 is steering the nation towards innovative solutions in renewable energy. With solar and wind power at the forefront, the variability and intermittency of these sources pose challenges to grid operations. To address this, the concept of Renewable Energy Round-the-Clock (RE-RTC) has emerged, combining renewable sources with storage systems like battery energy storage or pumped storage hydro (PSP) to ensure a steady power supply.

A recent paper delved into the techno-economic analysis of various RE-RTC combinations, considering generation profiles, storage solutions, investment costs, and demand patterns. The goal is to provide reliable, cost-effective power while reducing greenhouse gas emissions.

In June 2023, the Ministry of Power issued guidelines for tariff-based competitive bidding processes, enabling the procurement of firm and dispatchable power from grid-connected renewable energy projects with energy storage systems. These guidelines aim to promote renewable capacity deployment, fulfill renewable purchase obligations (RPO), and establish transparent procurement frameworks.

The Solar Energy Corporation of India (SECI) initiated RTC tenders, marking significant milestones in India’s renewable energy journey. The lowest bid tariffs discovered in these auctions signify the growing competitiveness of RE-RTC solutions.

The study employs the ORDENA model to optimize solar, wind, and storage requirements based on demand and generation profiles. With decreasing storage costs, RE-RTC solutions are becoming increasingly cost-effective, attracting more developers to participate in bidding processes.

RE-RTC offers numerous advantages, including reliable power supply, reduced dependency on fossil fuels, and enhanced grid stability. Combining solar, wind, and hydro power can further reduce tariffs and increase project viability.

However, challenges persist, requiring accelerated research and development in storage technologies and the establishment of supportive policy frameworks. Government initiatives such as viability gap funding for green hydrogen projects and mandated RE RTC procurement quotas can spur innovation and investment in the sector.

The ideal RE-RTC procurement scenario leverages the diversity in generation profiles across states, optimizing power procurement options. Storage solutions like PSP offer competitive alternatives to battery energy storage, further supporting the RE-RTC agenda. In conclusion, RE-RTC solutions present a promising pathway towards meeting diverse energy demands while fulfilling renewable energy obligations. Customizable to meet specific customer requirements, these solutions offer economic benefits and increased reliability in India’s evolving energy landscape. By embracing innovation and fostering collaboration, India can accelerate its transition towards a sustainable energy future.

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