West Bengal — Energy Transition Snapshot
Generated 1 May 2026Carbon intensity (recent ~48h)
Generation mix (latest)
Peak deficit history (%)
Overview
West Bengal sits within the Eastern Regional (ER) grid, historically dominated by coal-based thermal generation given its proximity to the Damodar Valley coalfields and legacy WBPDCL stations. The state is a net importer on the exchange margin during high-demand periods but has maintained structural adequacy in recent years. The single most striking available data point is a carbon intensity of 911.0 gCO2/kWh averaged over the recent ~48h window (as of 2026-05-01), placing West Bengal among the most carbon-intensive grids in the country and directly reflecting its thermal-heavy dispatch mix. Peak deficit at the 95th percentile stands at 0.0% (as of 2026-04-23), indicating no recorded peak shortage in the measured daily series. Open-access charges at HT voltage total INR 3.71/kWh (as of 2025-04-01). Fuel-mix decomposition and real-time demand telemetry are not currently available, limiting the granularity of this snapshot.
Demand & Supply
Real-time demand telemetry (latest_demand_mw) is not available for West Bengal; the Atlas SLDC feed does not cover this state, so no MW anchor can be provided for current load. The peak deficit p95, drawn from 23 daily POSOCO PSP data points, registers at 0.0% as of 2026-04-23, indicating that peak demand has been met without recorded shortfall across the observed series. This is consistent with the state's historically adequate thermal installed capacity base. Fuel-mix payload is unavailable (0 slices in chart_hints), so RE share and thermal-vs-RE dispatch split cannot be quantified from live data. The 911.0 gCO2/kWh average carbon intensity over the recent ~48h window is circumstantially consistent with a dispatch mix dominated by coal, since a meaningful RE contribution would suppress intensity materially below this level. Multi-year demand CAGR is not computable; the Atlas aggregator exposes only ~48h real-time data, so structural demand growth trajectory cannot be characterised in this snapshot. IEX DAM prices for the ER zone are also unavailable due to an empty upstream feed, removing the short-run marginal cost signal.
RE & Transition
RE share (latest and recent ~48h window delta) cannot be quantified: the fuel-mix payload is unavailable for West Bengal. However, the average carbon intensity of 911.0 gCO2/kWh over the recent ~48h window provides a strong indirect signal. For reference, a grid drawing a substantial fraction from solar or wind would typically register intensities well below 700 gCO2/kWh; a figure at 911.0 gCO2/kWh is consistent with near-total dependence on subcritical or supercritical coal dispatch at the time of measurement. The recent ~48h window delta in RE share is also unavailable, so directional movement cannot be assessed from current data. RPO compliance data is not yet integrated (IEA-58), making it impossible to assess whether the state is meeting its renewable purchase obligations. Long-term RE trajectory cannot be assessed without the multi-year demand CAGR aggregator. Taken together, the available evidence positions West Bengal as a high-carbon-intensity grid with no quantifiable near-term RE penetration signal from live data, though the absence of fuel-mix granularity means a definitive RE share estimate is precluded.
DISCOM Health
The total open-access charge stack at HT voltage stands at INR 3.71/kWh as of 2025-04-01, comprising cross-subsidy surcharge, wheeling, transmission, and loss charges. This is a moderate-to-high OA burden relative to the national range and constrains the effective economics of captive and third-party open-access sourcing for C&I consumers. Peak deficit p95 at 0.0% (as of 2026-04-23, 23-point series) suggests reliable peak-hour supply from the DISCOM perspective, with no extreme shortage events in the observed window. AT&C loss data is not yet integrated (IEA-57); without this, DISCOM financial health—the primary driver of cross-subsidy surcharge levels and tariff trajectory—cannot be assessed. Residential tariff data is also unavailable; the Atlas tariff endpoint requires an API key not yet provisioned. IEX DAM prices are unavailable, removing the exchange-cost benchmark needed to contextualise the OA charge stack against spot procurement alternatives.
Outlook
Over a 1–3 year horizon, the most material risk visible from available data is structural carbon intensity. At 911.0 gCO2/kWh over the recent ~48h window, West Bengal's grid will face increasing headwinds from tightening national RE targets and potential carbon-linked procurement costs for large industrial consumers. The 0.0% peak deficit p95 indicates adequate near-term supply security, which reduces the urgency of emergency capacity addition but does not address the emissions profile. The INR 3.71/kWh OA charge stack constrains demand-side RE switching; until AT&C losses and residential tariff cross-subsidy structures are disclosed (both data not yet integrated), the full cost-distortion picture remains incomplete. Three priority actions are indicated by the available data: first, fuel-mix telemetry integration is a prerequisite for any quantified RE transition monitoring; second, AT&C loss disclosure (IEA-57) is needed to assess DISCOM financial sustainability and its feedback into CSS levels; third, RPO compliance data (IEA-58) is necessary to determine whether statutory obligations are being met or whether penalty exposure is accumulating. No investment or tariff-level recommendation can be responsibly calibrated without those three data streams.
Data gaps in this brief
- Transmission ATC: Atlas endpoint not yet integrated (see IEA-56).
- DISCOM AT&C losses (UDAY): Atlas endpoint not yet integrated (see IEA-57).
- RPO compliance: state RE policy dataset not yet integrated (see IEA-58).
- Subsidies / incentives: state catalogue not yet integrated (see IEA-59).
- Residential tariff: Atlas tariff endpoint requires X-API-Key not yet provisioned for tools-api.
- Multi-year demand CAGR: Atlas does not yet expose a long-term aggregator (only ~48h realtime).
- IEX DAM price: upstream IEX area-prices feed currently empty.
- Transmission ATC: Atlas endpoint not yet integrated (IEA-56).
- DISCOM AT&C losses (UDAY): Atlas endpoint not yet integrated (IEA-57).
- RPO compliance: state RE policy dataset not yet integrated (IEA-58).
- Subsidies / incentives: state catalogue not yet integrated (IEA-59).
- Residential tariff: Atlas tariff endpoint requires X-API-Key not yet provisioned.
- Multi-year demand CAGR: Atlas exposes only ~48h real-time data; long-term aggregator absent.