Renewable Energy to Dominate India’s Grid by 2070: NITI Aayog

80% Renewable Energy by 2070: Lofty Ambition or Carefully Calibrated Projection?

By 2070, renewable energy could provide more than 80% of India’s electricity generation, according to a new NITI Aayog study. Coal’s share, which currently underpins 74% of electricity output, is expected to plummet to just 6-10% by then. At present, non-fossil sources have crossed a landmark: over 51% of India's installed capacity in 2025 comes from renewables, hydro, and nuclear. Yet, they contribute only 22% to the actual electricity generation mix. This stark imbalance sets the stage for the complex interplay of growth, grid stability, and climate commitments in the coming decades.

Why This Claim Breaks From Patterns

India has long defended its reliance on coal, citing affordability and reliability. Even as renewable capacity has soared—from 19.6% of installed capacity in 2013-14 to 51.1% in 2025—the share of renewables in actual electricity generation rose marginally, from 19.6% to a mere 22%. The heavy lifting remains with coal plants, which meet peak energy requirements and stabilize grid fluctuations caused by renewable intermittency. Now, the 2070 projection posits a reversal of this equation.

The proposed trajectory is unprecedented in global energy transitions. China, with its vast manufacturing capacity for renewables, still derives over 50% of its electricity from coal despite aggressive targets. The United States, where shale gas displaced much coal usage, also struggles to expand renewables beyond 25% of grid generation. The NITI Aayog study’s suggestion that India will achieve over 80% renewable penetration within 50 years appears unusually ambitious and demands scrutiny.

The Machinery Behind India’s Energy Transition

India’s energy transformation is governed by a tapestry of policies launched under multiple missions, Acts, and schemes:

• National Solar Mission (2010): Targets large-scale capacity addition in grid-connected and off-grid solar projects.
• National Wind-Solar Hybrid Policy (2018): Encourages pairing solar and wind to stabilize output.
• Green Energy Corridor: Aims to integrate renewable sources with the national grid.
• PM-KUSUM Scheme: Promotes solar power in agriculture through solarization of irrigation pumps.

Despite these efforts, key infrastructure remains woefully underdeveloped. For instance, large-scale energy storage, critical for mitigating renewable intermittency, has not moved beyond pilot projects. The Minerals (Development and Regulation) Act, which governs mining in India, has not been effectively updated to prioritize domestic exploration of lithium and cobalt—critical for battery technology—leaving India to import over 80% of these minerals. With storage pivotal for the leap to 80% renewables, reliance on imports is a glaring vulnerability.

What the Data Reveals

The optimism in NITI Aayog’s projections comes up against the stubborn reality of current energy economics. Solar and wind power together comprise 180.45 GW of India’s 500.89 GW installed capacity. However, these sources contributed only 22% of generation in 2025, reflecting low capacity utilization due to resource intermittency and mismatched peak-hour demand. Consider the trends as of FY 2025-26:

• India added 28 GW of non-fossil capacity but just 5.1 GW of fossil energy. Yet, coal produced 74% of electricity due to its reliability.
• Nuclear energy, which provides firm baseload energy, constituted a paltry 3% of generation, though its share is projected to expand to 5-8% by 2070.
• Global supply chain risks for materials like lithium and cobalt have resulted in high costs for essential battery storage systems in India.

The mismatch between installed capacity growth and real output highlights structural bottlenecks. Solar projects, abundant in capacity, do not match grid demand peaks. Wind projects experience seasonal output variation. Without affordable storage and grid modernization, the planned transition could end up as a stalled ambition.

The Unasked Questions About 2070

The timeline itself raises uncomfortable questions. Why does the strategy hinge on a half-century target? An 80% renewable energy share by 2070 aligns with India’s commitment to net-zero but may not reflect the urgency required to meet global climate imperatives under the Paris Agreement. By 2030, the Intended Nationally Determined Contributions (INDCs) already require non-fossil sources to supply 50% of electricity generation—a much closer milestone. Yet, progress has been slow.

Moreover, few policymakers discuss political resistance at the state level. Electricity is a concurrent subject under Article 246 of the Constitution, with states controlling distribution. Renewable energy, despite Central support, often faces regulatory delays in states, land acquisition hurdles, and financial stress among state DISCOMs.

Fiscal capacity remains another blind spot. NITI Aayog reports consistently point to the high upfront cost of renewables, but where will this funding come from? India still provides ₹12,000 crore annually in coal-based electricity subsidies while renewable power has yet to receive comparable financial backing.

A Pointed Comparison: South Korea’s Experience

When South Korea charted its renewable expansion plan in 2018 under the “Renewable Energy 3020” strategy, it faced a similar grid challenge. Despite a 3030 target—30% renewable energy by 2030—the country admitted its dependence on imported LNG and nuclear for grid stability. By 2023, less than 15% of its actual electricity generation came from renewables, with storage costs outpacing expectations. India should learn not only from Korea’s technical breakthroughs in hybrid systems but also from its shortcomings: underinvestment in domestic manufacturing and transmission.

Prelims Practice Questions

Practice Questions for UPSC

Prelims Practice Questions

Frequently Asked Questions