Patna/Delhi: In a striking departure from its historical image as one of India’s most energy-constrained regions, Bihar has recorded one of the country’s fastest rises in electricity demand, with peak load climbing 38.6 per cent from 4,965 MW in 2017-18 to 6,880 MW in 2022-23, according to a new report by the DST-Centre for Policy Research at the Indian Institute of Science.
Per-capita consumption has more than doubled over the past decade, from 145 kWh in 2012-13 to 329 kWh in 2021-22, even as the state remains India’s poorest by per-capita income and one of its least industrialised.
The drivers are unmistakably domestic. Household consumption now accounts for 56 per cent of total energy sold, far ahead of industry at 28 per cent, reflecting both rapid rural electrification and rising appliance ownership among Bihar’s 124 million inhabitants. Between 2012-13 and 2020-21, domestic electricity use grew at a compound annual rate of 31.9 per cent — the fastest of any sector — followed by public water works and agriculture.
Yet industry is not far behind. Low- and medium-voltage industrial consumption expanded at a 21.5 per cent CAGR over the same period, underpinned by new investment and the state’s improving ranking in ease-of-doing-business metrics. In the four years to 2024, Bihar cleared nearly twice as many factory proposals as in the preceding four-year period.
The state’s gross state domestic product grew 8.64 per cent in real terms in 2024-25, placing it sixth nationally. The Bihar State Energy Efficiency Action Plan forecasts GSDP rising from roughly ₹5.8 lakh crore in 2015 to over ₹30 lakh crore by 2030, with primary energy demand almost tripling to 15.8 million tonnes of oil equivalent.
Supply catching up — but coal still dominates
The gap between peak demand and availability has narrowed sharply, from 430 MW in 2017-18 to 142 MW in 2022-23, though a residual deficit of 2.06 per cent persists. Bihar remains overwhelmingly reliant on coal, which constitutes about 95 per cent of installed capacity. Renewable sources account for the remainder, with only 15 per cent of the 2017 renewable energy policy target achieved to date.
That is now changing. This week the Bihar Electricity Regulatory Commission approved the purchase of 200 MW of solar power specifically to ease peak-hour pressure in Patna and help meet renewable purchase obligations. The state’s new Renewable Energy Policy 2025 targets 23,968 MW of renewable capacity and 6.1 GWh of storage by 2029-30 — an ambitious leap from the current solar installed base of just 328 MW.
Chief Minister Nitish Kumar has tied the expansion to electoral strategy, pledging free electricity up to 125 units per month for 16.4 million households while promising rooftop solar plants on 10-12 million homes within three years, with full subsidies for the poorest families. The scheme, if realised, would deliver an additional 10 GW of decentralised solar capacity — thirty times today’s level.
For investors, Bihar’s trajectory offers both opportunity and risk. Surging domestic and industrial demand, coupled with political commitment to renewables, points to a multi-decade investment cycle in generation, transmission and distributed solar. Yet the state’s continued dependence on coal, modest progress on past renewable targets and fiscal constraints underline the challenges ahead in financing the required infrastructure.
As one of India’s last major electrification frontiers closes, Bihar is rapidly transforming from power-starved laggard to one of the country’s most dynamic electricity markets.
