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A decade ago, Karnataka had 29 times Bihar’s renewable capacity. Today it has 39 times. That widening gap is the first half of this story. The second half is that Bihar has just committed ₹1.38 lakh crore to close it with a run to 24 GW, even as Karnataka plots a run to 66 GW of its own.
Karnataka spent the last decade turning an early lead into outright dominance. Bihar spent it almost entirely on the sidelines, and is only now, in the last two years, showing the first real signs of a state that intends to catch up.
2026 renewable capacity
27,442 MW
709.30 MW
Ten years ago, Karnataka was already the country’s runaway renewable-energy leader, with 5,673 MW installed (Till March 2016) against Bihar’s 194 MW — a near-30x gap before either state’s real growth phase had even begun.
Karnataka didn’t rest on that lead; it compounded it. More than 70% of its current renewable base, 7,131 MW, was added after April 2016 alone, anchored by the commissioning of the 2,000 MW-plus Pavagada Solar Park, one of the largest solar parks built anywhere in the world at the time. 
By 2020, Karnataka ranked first nationally with close to 10 GW of renewable capacity. Today that figure stands at 27,442 MW of renewables within a total installed base of over 39 GW. An almost two-thirds share for clean hydro and renewable power.
Bihar’s decade, by contrast, was one of near-total absence from India’s renewable buildout. From a base of 194 MW, the state added just 515 MW of renewable capacity over ten years to reach 709 MW today, a number Karnataka now adds within a matter of months.
Framed as growth rates, Bihar’s 266% increase can look respectable next to Karnataka’s 384%; framed as capacity actually built, Karnataka added roughly 30 times Bihar’s entire current renewable base in that same window. For most of the decade, Bihar simply wasn’t in the race.Karnataka added roughly 30 times Bihar’s entire current renewable base in the time it took Bihar to build what it has today.
What changes the story is the last two years, in which Bihar has moved with a speed that its previous decade gives almost no hint of. The state has set a target of 24 GW of renewable-energy capacity and 6 GWh of energy storage by 2030, backed by a ₹1.38 lakh crore power investment pipeline,  an ambition that, if realised, would mean building out roughly 34 times its entire current renewable base within this decade alone.
The intent shows up in early execution, not just targets. On rooftop solar, Bihar has committed ₹1,512 crore to a first-phase rollout covering 2.5 lakh Kutir Jyoti beneficiary households, part of a wider plan to bring 25 lakh households under the PM Surya Ghar Muft Bijli Yojana by November 2027.
On utility-scale and storage, the tendering pipeline has gone from a standing start to real activity: a 75 MW solar project with SJVN in 2026, and a 125 MW/500 MWh battery storage award at ₹4.44 lakh/MW/month.
The state’s storage ambitions trace back further than they might appear.  BSPGCL first sought developers for a 185 MW solar project paired with a 254 MWh BESS around 2024, followed by a standalone BESS procurement in March 2025. Taken together, these are the first signs of a state moving from isolated projects toward an actual renewable-energy strategy: utility-scale solar, rooftop and storage advancing together rather than in isolation.
Karnataka isn’t standing still while Bihar finds its footing. The state is now preparing a ten-year roadmap to take total installed power capacity from over 39 GW to 66 GW by 2030, with clean energy expansion central to that growth rather than incidental to it. That builds on the Karnataka Renewable Energy Policy 2022–2027, which targets 10 GW of additional renewable capacity over its five-year window and at least 1 GW of dedicated rooftop solar capacity by 2027. A deliberate push to give distributed generation a larger role alongside the state’s large-scale solar parks and hydro base.
The 2026-27 state budget reinforced that direction, with Chief Minister Siddaramaiah extending a ₹48,000 crore electricity subsidy to 36 lakh farmers alongside continued emphasis on decentralised energy systems and rural power sustainability. It’s a signal that Karnataka’s next phase isn’t only about adding gigawatts at Pavagada scale — it’s about spreading renewable and clean power more evenly across the state’s rural and agricultural base, even as the larger 66 GW roadmap takes shape.
Put side by side, these aren’t two versions of the same story — they’re two different clocks running on India’s renewable-energy transition. Karnataka’s has been ticking for a decade and is now accelerating into its next phase, from an already-massive base, with policy, rural distribution and a fresh 66 GW roadmap all reinforcing each other. Bihar’s clock effectively didn’t start until the last two years, and it now has to compress what Karnataka did over ten years into the back half of this decade — 24 GW of renewables and 6 GWh of storage from a base of well under a gigawatt. Taken along with Bengal, Assam  and Odisha plsns in East India, the East has finally woken up, many would say. Opening a whole new, and much needed demand centre for India’s solar manufacturers as well.
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