#interstatetransmissionsystem

Inter State Transmission System performance is under sharper scrutiny after a series of frequency events, voltage instability episodes, and project execution delays. The latest data shows a 0 percent peak deficit on paper, but that did not prevent frequency from falling to 49.62 Hz. This suggests that reported adequacy is not fully capturing operational stress developing within the network.

A key signal comes from the 16.5 GW load drop event. The disturbance involved HVDC tripping, renewable volatility, frequency spikes, voltage surges, and tripping of 18 EHV lines. At the same time, the northern grid continued to face persistent overvoltage even after shutdown interventions. Rajasthan renewable zones were also flagged for low system strength and oscillatory behaviour. These developments indicate that the Inter State Transmission System is facing both dynamic stability stress and reactive power management challenges.

The document also points to control and coordination gaps. SCADA failure at NTPC Gandhar reduced real-time visibility. Audit and funding delays are slowing protection upgrades in the North East. Communication outage proposals remain irregular. On the project front, Transmission infrastructure reports from the Central Electricity Authority show progress tracking, but also underline delays linked to bay readiness, approvals, and repeated outage extensions.For EnergylineIndia.com, this Inter State Transmission System update matters because it combines system operation risk with implementation bottlenecks. When frequency stress, voltage instability and delayed transmission works appear together, the Inter State Transmission System becomes more vulnerable to disruption than headline numbers suggest.

The Inter State Transmission System in Assam records a consolidated EPC tender as AEGCL packages a 220/132kv, 2x160 mva AIS substation with associated transmission lines under P-II-E. The integrated structure centralises yard and line execution under one contractor.

For the Inter State Transmission System, this bundling compresses interface risk but heightens single-point liability. Transformer procurement cycles, gantry erection and conductor stringing must align to avoid commissioning delays. The 2x160 mva sizing signals calibrated capacity planning rather than incremental expansion.

From a News on power sector lens, integrated EPC packaging is increasingly standard for state utilities seeking streamlined contract management. However, it narrows participation to firms with in-house line divisions or proven consortium depth. Balance-sheet strength and 220kv credentials become decisive filters.

The AIS configuration reflects capex prudence while requiring careful land and flood-resilience planning. Under the Inter State Transmission System, right-of-way and statutory clearances are no longer separable risks; delay in tower erection can hold up yard energisation.EnergylineIndia.com notes that such Inter State Transmission System structuring influences competitive dynamics. Larger EPC players gain structural advantage, while smaller specialists may need alliances to remain relevant in Assam’s transmission expansion cycle, AEGCL, Grid Expansion, Inter State Transmission System, Indian Power News.

The Inter State Transmission System in Maharashtra sees a focused budgetary offer stage for a 220 kv mc monopole near 132 kv Shirwal s/s. MSETCL’s tender ref 1772019990 marks early price discovery for the proposed 220 kv Lonand – Shirwal line.

This Inter State Transmission System structure is not a routine lattice tower. A monopole adjacent to a live substation yard introduces interface risk, outage coordination and clearance compliance challenges. Foundation design and heavy-lift erection sequencing can materially influence cost curves at this single node.

By isolating this structure under the Inter State Transmission System, MSETCL tests market appetite before locking DPR cost assumptions. No EMD, PBG or qualification filters are disclosed at this stage, reinforcing its non-binding nature. The upload and listing dates of 25–26 February 2026 set the commercial clock for responses.

From a News on power sector perspective, this mirrors cautious capital validation seen across state transmission utilities. Budgetary pricing exercises sharpen estimate defensibility prior to board approval. However, early anchoring of lean numbers may compress margin elasticity during the formal EPC stage.EnergylineIndia.com highlights that the Inter State Transmission System lesson is strategic pricing discipline. Contractors should treat budgetary submissions as indicative yet realistic, particularly where specialised monopole fabrication and live-yard integration risks dominate, Inter State Transmission System, Indian Power News,  MSETCL, Transmission Infra.

The Inter State Transmission System in Rajasthan records a notable bifurcated award as RRVPN finalises the Hathi Bhata 132/33 kV GIS substation contract at Rs 155.72 crore. Supply and services were separated, generating measurable savings but increasing coordination exposure.

Within this Inter State Transmission System tender, Rajesh Power Services won supply at Rs 134.70 crore, quoting 4.9% below L2. R S Infraprojects-AK Das JV secured erection and commissioning at Rs 17.72 crore, 18.6% below L2. Universal Cables presented superior technical losses of 13.12 kW/km but was edged out by price competitiveness.

Project scope covers 2x50 MVA transformers, 145 kV SF6 GIS modules, feeder bays, bus coupler, 36 kV switchboard, and XLPE cable networks. Approved OEM lists include ABB, Siemens, Hitachi, Hyosung for GIS and Atlanta, ECE, TAL for transformers. Unlike some Smart grid linked frameworks, digital twin or IIoT specifications were not indicated.

For the Inter State Transmission System, lifecycle cost weighting appears secondary to capex compression. The loss variation band of 13.12–14.29 kW/km reflects tolerance without penalty adjustment.EnergylineIndia.com tracks this as part of broader Indian Power news consolidation trends, where three-bidder participation replaces earlier multi-player competition. The Inter State Transmission System strategy delivers savings but may shift risk to execution timelines and warranty demarcation between vendors, Inter State Transmission System, Indian Power News, RRVPN, GIS Substation, News On Power Sector.

RECPDCL’s 10th amendment to the Shongtong–Tidong evacuation RFP marks a subtle but decisive hardening of technical requirements in INTER STATE TRANSMISSION SYSTEM projects. The amendment replaces a generic firewall reference with a detailed, CEA-compliant cyber security architecture that the transmission service provider must design, supply and commission.

The change directly affects the 400/220 kV GIS pooling station at Jhangi, where all SCADA, PMU and IEC-61850 traffic must now pass through redundant OT-grade next-generation firewalls. By embedding these requirements into the RFP, RECPDCL has transformed cyber security into a regulated deliverable within the INTER STATE TRANSMISSION SYSTEM asset base.

For bidders, this raises both technical and commercial stakes. Certification thresholds such as EAL4+ and IEC 62443 compliance limit OEM choices, while integration responsibility sits entirely with the TSP. In a fixed-tariff INTER STATE TRANSMISSION SYSTEM, mispricing cyber scope could erode margins or delay COD.

From a governance lens, the amendment reflects lessons from earlier ISTS projects where cyber controls were layered post-commissioning, often triggering audit observations. Front-loading requirements now reduces downstream disputes but increases bid complexity.As transmission corridors increasingly support large hydro and renewable capacity, regulators are treating the INTER STATE TRANSMISSION SYSTEM as critical digital infrastructure. The Shongtong–Tidong amendment is likely to influence future RFPs, setting a baseline where cyber resilience is inseparable from physical grid reliability, Inter State Transmission System, ISTS cyber security, Shongtong Tidong RFP, RECPDCL amendment, transmission firewall.

Powergrid’s commissioning of the Khavda II-B corridor marks a decisive upgrade to India’s INTER STATE TRANSMISSION SYSTEM, enabling evacuation of 4.5 GW of renewable energy from Gujarat’s Khavda renewable hub. Achieving commercial operation on 13 December 2025, the project strengthens western India’s ability to integrate large-scale solar and wind generation into the national grid.

The Khavda II-B link is part of a wider Phase-II transmission plan designed to support more than 20 GW of renewable capacity planned in the Kutch region. Built through a Powergrid subsidiary under the TBCB framework, the project deploys high-capacity 765 kV infrastructure, a backbone technology of the INTER STATE TRANSMISSION SYSTEM.

For system operators, the timing is crucial. Renewable generation has been outpacing corridor expansion, pushing the INTER STATE TRANSMISSION SYSTEM toward congestion and curtailment during peak generation hours. The new link directly addresses this imbalance by increasing transfer capability and improving operational resilience.

The project also reflects a broader shift in India’s energy transition narrative. As renewable capacity scales up, the reliability of the INTER STATE TRANSMISSION SYSTEM has become the determining factor in whether clean power can be delivered where it is needed. Transmission execution, not generation announcements, is now the binding constraint.

From an investment perspective, the commissioning adds another regulated asset to Powergrid’s portfolio, generating predictable cash flows under CERC oversight. In the evolving power sector, leadership increasingly rests with entities capable of executing complex INTER STATE TRANSMISSION SYSTEM projects at scale and on schedule, Inter State Transmission System, Power Sector Reforms, TBCB, Electricity Policy.

Kerala has formally embedded competitive bidding into its transmission procurement regime after the regulator approved a Rs 250-crore threshold for tariff-based competitive bidding. Though applicable to intra-state projects, the framework closely reflects INTER STATE TRANSMISSION SYSTEM procurement practices, reinforcing standardisation across India’s transmission landscape.

The decision enables Kerala to meet a key reform condition prescribed by the Ministry of Finance for accessing additional borrowing headroom linked to power-sector reforms. All transmission schemes exceeding Rs 250 crore will now be developed through TBCB, with tariffs adopted under Section 63 of the Electricity Act.

The policy was driven by a government direction issued under Section 108, signalling that transmission procurement has become a matter of fiscal and public interest. Similar to the INTER STATE TRANSMISSION SYSTEM, the emphasis is on transparent price discovery, competitive execution, and reduced cost overruns.

For KSEB Ltd., the reform alters its institutional role. Large projects will increasingly be executed by competitively selected developers, while the utility focuses on system planning and grid operations. This mirrors the functional separation seen in the INTER STATE TRANSMISSION SYSTEM between planners and transmission service providers.

Regulatory checks remain robust, as developers must obtain licences and tariff approval from KSERC. Analysts note that Kerala’s move demonstrates how state transmission policy is now being shaped by national fiscal incentives, with INTER STATE TRANSMISSION SYSTEM principles serving as the reference template, Inter State Transmission System, Kerala Transmission, Power Sector Reforms, TBCB, Electricity Policy.

CERC’s 755/TL/2025 order has advanced one of India’s most significant Inter State Transmission System projects — the Bornagar substation and line complex in Assam.

Developed by NERTEL (Resonia Ltd), the project will form the region’s second grid entry point and future connection to the Bornagar–Bangladesh–Katihar 765 kV corridor.

 Approved under the TBCB framework and supported by CTUIL, the project marks a major reliability enhancement within the national Inter State Transmission System. No objections were received after public notice, confirming stakeholder support.

This development strengthens the North-Eastern Region’s grid resilience and reflects India’s growing investment in strategic Inter State Transmission System assets, Inter-State Transmission System, CERC, Energyline India, Bornagar Substation, Resonia, Sterlite Power, NERES XXV, Assam Power, Grid Expansion.

Full verified summary available on EnergylineIndia.com.