RENEWABLE ENERGY INTEGRATION

1. At a Glance

Renewable Energy (RE) Integration = building the transmission backbone, storage and grid management needed to evacuate and absorb variable RE (solar/wind) generation into the national grid [S1][S2].
Anchored on Green Energy Corridors (GEC-I & II) and expansion of the Inter-State Transmission System (ISTS), aligned to India's 500 GW non-fossil capacity by 2030 target (Panchamrit/COP-26) [S1][S3].
Examinable for GS-III (Infrastructure-Energy, Environment) — links India's NDC, ISA, and electricity sector reforms.

PIB release (Ministry of Power, 09 Mar 2026) stated that GEC + ISTS expansion will integrate >500 GW of non-fossil capacity by 2030 and >600 GW by 2032 [S1].
National Electricity Plan (NEP) Vol-II (Transmission) notified by Central Electricity Authority (CEA) projects transmission expansion to 6.48 lakh ckm and 2,345 GVA by 2031-32 [S1][S2].

2010: GEC concept conceived to evacuate RE from resource-rich states.
2015-16: GEC-I (Intra-State) sanctioned in 8 RE-rich states for ~24 GW evacuation.
Jan 2022: Cabinet (CCEA) approved InSTS GEC-II for Gujarat, HP, Karnataka, Kerala, Rajasthan, TN, UP — ~20 GW RE evacuation, completion targeted by 2026 [S3].
Oct 2023: CCEA approved GEC-II ISTS for 13 GW Ladakh RE Project, cost ₹20,773.70 crore, CFA @ 40% = ₹8,309.48 crore, COD FY2029-30 [S3].
2023: CEA notified NEP 2022-32 [S2].

Nodal Ministry: Ministry of Power (transmission) + MNRE (RE generation) [S1].
Implementing/CTU: Power Grid Corporation of India Ltd (PGCIL) for ISTS; State Transmission Utilities for InSTS.
Planner: Central Electricity Authority (CEA) — statutory body under Electricity Act, 2003 (Sec 73).
Targets:
500 GW non-fossil installed capacity by 2030 (COP-26 Panchamrit) [S1].
>600 GW non-fossil by 2032 [S1].
Transmission network (≥220 kV): 6.48 lakh ckm & 2,345 GVA by 2031-32 [S1][S2].
1,91,000 ckm + 1,270 GVA added over 2022-23 to 2031-32 [S2].
Inter-regional capacity: 120 GW (Feb 2026) → 168 GW by 2032 [S1][S2].
Likely installed capacity 2031-32: 9,00,422 MW = 3,04,147 MW conventional + 5,96,275 MW RE-based [S2].
Storage planned: 47 GW Battery Energy Storage Systems (BESS) + 31 GW Pumped Storage Plants (PSP) [S2].

Economic: Ladakh GEC-II alone ₹20,773 crore; 40% CFA reduces tariff burden on DISCOMs [S3]; transmission charge waiver on ISTS for solar/wind incentivises investment.
Environmental: Enables substitution of coal generation, advancing India's NDC of 50% cumulative non-fossil installed capacity by 2030 and net-zero by 2070 [S1].
Technological: Requires HVDC links (e.g., Ladakh-Kaithal HVDC), grid-forming inverters, BESS, PSPs, dynamic compensators (STATCOMs) for variable RE [S2].
Federal / Administrative: ISTS = Centre (CTU/PGCIL); InSTS = States (STUs) → coordination via National Committee on Transmission (NCT) and Regional Power Committees.
Strategic: Ladakh corridor has dual energy-security + border-area development value [S3].

09 Mar 2026: PIB release reiterating 500/600 GW integration roadmap & NEP-II numbers [S1].
Feb 2026: Inter-regional transmission capacity = 120 GW; targeted 143 GW by 2027, 168 GW by 2032 [S2].
2025: Termed "highest-ever RE expansion year" in India's transition (PIB) [S2].
Oct 2023: CCEA clearance for 13 GW Ladakh GEC-II ISTS [S3].

500 GW non-fossil target year = 2030; 600 GW target year = 2032 [S1].
Transmission network target 6.48 lakh ckm & 2,345 GVA by 2031-32 [S1].
Inter-regional capacity target by 2032 = 168 GW (from 120 GW in Feb 2026) [S2].
NEP prepared by Central Electricity Authority (CEA) — NOT MNRE [S2].
BESS planned by 2031-32 = 47 GW; PSP = 31 GW [S2].
GEC-II ISTS Ladakh capacity = 13 GW, cost ₹20,773.70 cr, CFA 40% [S3].
InSTS GEC-II covers 7 states: Gujarat, HP, Karnataka, Kerala, Rajasthan, TN, UP — ~20 GW [S3].
Electricity Act, 2003 is the enabling statute; CEA under Sec 73 [Static].
Likely RE installed capacity by 2031-32 = 5,96,275 MW; conventional = 3,04,147 MW [S2].
Panchamrit announced at COP-26 Glasgow (2021) [S1].

GS-III: Infrastructure — Energy; Environment & Climate Change.
Syllabus heading: "Infrastructure: Energy, Ports, Roads…"; "Conservation, environmental pollution and degradation".
Probable stems: 1. "Transmission, not generation, is the binding constraint on India's 500 GW renewable target." Critically examine. 2. Discuss the role of Green Energy Corridors and energy storage in integrating variable renewable energy into the Indian grid. 3. Evaluate India's National Electricity Plan (2022-32) in the context of its NDC commitments.

Panchamrit & India's NDC — sets the 500 GW target.
PM-KUSUM, PLI for solar modules, SIGHT (Green Hydrogen Mission) — generation-side complements.
Electricity Act 2003 & Amendment Bills — statutory base for transmission/DISCOMs.
International Solar Alliance (ISA) & One Sun One World One Grid (OSOWOG) — external dimension.
Pumped Storage Plants & BESS policy (MoP 2023) — storage leg of integration.
CERC/SERC, NLDC/RLDC — regulation & dispatch.
Carbon Credit Trading Scheme (CCTS), 2023 — market signal.
Just Transition & coal phase-down — socio-economic angle.

GEC nodal ministry is Ministry of Power, not MNRE (MNRE handles generation/PLI).
NEP is by CEA, not NITI Aayog or MoP directly.
ISTS (inter-state, PGCIL) vs InSTS (intra-state, STUs) — frequently confused.
The 500 GW target is non-fossil installed capacity (includes large hydro & nuclear), NOT "renewable" in the narrow MNRE sense.
600 GW figure is for 2032, not 2030.

[S1] Renewable Energy Integration — Ministry of Power, PIB, 09 Mar 2026 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2236994 — (tier 1)
[S2] Strengthening Transmission Infrastructure for Integration of Renewable Energy / NEP 2022-32, PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2243993 ; https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=1928750 — (tier 1)
[S3] Cabinet approves GEC Phase-II ISTS for 13 GW Ladakh RE Project, PIB — https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=1968732 ; InSTS GEC-II — https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=1788011 — (tier 1)