Inter-state transmission system (ISTS) open access (OA) renewable market is growing strongly on the back of multiple drivers including a waiver from ISTS charges together with decarbonisation pressure on corporates and streamlined transmission connectivity approval process. However, the ISTS route savings are viable only for projects commissioned by June 2026 (at least 75% ISTS charge waiver). Other challenges include lack of banking facility and inadequate transmission infrastructure.
Figure: Landed cost of power for industrial consumers, INR/ kWh
Source: BRIDGE TO INDIA research
Note: Landed cost is shown inclusive of applicable grid charges for a State Transmission Utility (STU)-connected consumer procuring hybrid renewable power under group captive model.
This report provides an overview of the ISTS OA renewable market, landed cost analysis under alternate project configurations, drivers, challenges, approval process and overall market outlook.