"India's renewable energy bottleneck has shifted from generation to transmission and storage." Discuss this in the context of the Green Energy Corridor Phase-III.

Solar and wind make up 37% of India's installed capacity but only 13% of its generation [4]. That gap shows the main constraint is no longer building panels and turbines. It is now getting their power into the grid and storing it. The Union Cabinet's approval of Green Energy Corridor (GEC) Phase-III in 2026 largely accepts this view [1].

Why the bottleneck has shifted

• Time mismatch: solar parks come up in one to two years, but transmission lines take longer. Only 58% of targeted transmission lines were added in 2024-25 [4].
• Curtailment: when lines are congested, grid operators cut renewable output to keep the grid stable. Power that has already been generated is wasted [1].
• Intermittency: solar output falls away at sunset. Without storage, the evening peak falls back on thermal power [4].
• Past delivery gaps: by December 2020, GEC Phase-I had built 7,365 of its 9,700 ckm target for lines and 9,976 of its 22,600 MVA target for substations [3].

How GEC Phase-III responds

• Scale: the outlay is above ₹1.86 lakh crore, about 15 times Phase-II's ₹12,031.33 crore [1][2].
• Intra-state networks: ₹1.36 lakh crore goes to integrating up to 135 GW of renewable energy by FY 2032-33 [1].
• Storage, for the first time: ₹50,000 crore goes to 50 GWh of battery energy storage (BESS). It will absorb surplus power and shift it to peak hours [1].
• Wider reach: it covers States and UTs broadly, against seven RE-rich States in Phase-II [1][2].

Limits of the statement

• Money is not delivery: the Standing Committee on Energy blamed the Phase-I shortfall on weak MNRE monitoring and a "lack of priority" [3].
• State finances: Phase-II gave 33% Central Financial Assistance [2]. Phase-III's central share has not been reported [1]. Loss-making DISCOMs also limit how much States can borrow [4].
• Storage scale: 50 GWh can supply 12.5 GW for four hours. That smooths evening peaks but cannot cover long cloudy or windless spells.
• Generation still matters: the 450 GW by 2030 target still needs new capacity [2]. The bottleneck has widened more than it has moved.

The statement largely holds: India's energy transition now depends as much on wires and batteries as on panels. GEC-III answers this with scale and its first storage component. It will succeed only with State-wise public tracking of physical progress, an early and clear central share, and concessional finance. Delivered this way, it can advance SDG 7 and India's climate commitments.