Hidden Price Island: 1,000 MW of Gas Power at a Quarter of LNG Tariffs
There’s a quiet anomaly in India’s power system a patch of generation that defies national economics. A “hidden price island” where gas-fired electricity is four times cheaper than the rest of the country’s gas fleet.
And it’s not a data trick. It’s right there in official dispatch sheets.
⚙️ The Numbers Don’t Lie
Take NEEPCO’s Assam Gas Based Power Station (Kathalguri), listed in the NERPC’s AS-3 filing for November 2025.
Variable Cost: ₹4.70/kWh
Fixed Cost: ₹2.96/kWh
A month earlier? Virtually unchanged. That consistency comes from regulated domestic gas pricing a policy relic of the Northeast that keeps costs low because:
The fuel is not LNG-linked,
It’s partly subsidized, and
There’s no competing demand pushing prices upward.
🛢️ The West’s Expensive Reality
Now, jump to Rajasthan’s Merit Order Dispatch for mid-November 2025. Here, LNG-fired stations like NTPC’s Dadri, Anta, and Auraiya paint a different picture:
Dadri LNG: ₹12.42/kWh
Anta LNG: ₹13.25/kWh
Auraiya LNG: ₹13.69/kWh
And on the liquid-fuel side, it’s worse between ₹18 and ₹25/kWh.
That’s four to five times the variable cost of Kathalguri. Same turbines. Same technology. But vastly different molecules and vastly different outcomes.
🌍 The 1,000-MW “Price Island”
Assam’s 1,000-MW zone of economic gas power includes:
291 MW from Kathalguri (NEEPCO)
750 MW from NTPC’s Bongaigaon TPP (coal)
Together, they form a generation ecosystem where fuel economics still make sense. Coal’s variable cost here hovers around ₹3.4–₹3.5/kWh modest compared to the ₹12–₹25/kWh gas generation costs in western India.
But the real anomaly the “hidden island” lies in gas.
🔍 The Answer Is Simple: It’s the Gas
Strip away everything else heat rates, ramping behavior, technology age and the cost divergence boils down to one variable:
The price of gas.
Assam burns regulated domestic gas.
The rest of India burns imported LNG.
Fixed costs? Comparable. Operational factors? Minor. Fuel cost? A structural gulf.
⚡ The Last Frontier of Viable Gas Power
Across most of India, gas-based capacity now sits idle — revived only for peaking or emergencies. But in Assam, gas still plays baseload duty. Not because the plants are exceptional, but because the fuel remains affordable.
In a power system increasingly divided between coal dominance and renewable ambition, Assam’s 1,000-MW pocket stands out as a living remnant of a time when gas was a mainstream, dependable part of India’s grid.
It’s not nostalgia it’s economics. And for now, this hidden price island remains the last place in India where gas still makes sense.
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