#indianpowersector

When both transformers there tripped on 3 July, the protection scheme dropped about 102 MW in five seconds. It wasn't close — the surviving transformer hit 212% of its rating and failed six seconds later. The scheme did its job and still came up roughly 200 MW short.

That is the North-East in one night: last-resort defences covering for a network that can't carry its own load.

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So which is it — a power shortage or a power glut? This week, somehow, both. IEX day-ahead prices hit a weekly high for 17 July at Rs 7,284 a MWh, nearly triple last Sunday's rate, with night blocks pinned to the Rs 10,000 ceiling. Yet on 16 July the grid backed generation down by a net 4,565 MWh, left four gas stations scheduled at zero, and spilled 8.85 million units of Gujarat renewables. The catch is the clock: the market only really cleared between 19:30 and 23:00, after solar set. Sky-high evenings, oversupplied days.

The price is the least interesting number in POWERGRID's Rs 289.16 crore reactor award. The utility handed CG Power a single package of 27 three-phase 420 kV shunt reactors, plus design, manufacture, testing, erection supervision, commissioning and lifecycle QA. That is not an equipment sale; it is a multi-year execution commitment with the risk sitting on the supplier. Bundling this many EHV units at once quietly narrows the field to OEMs who have done it before. The money books once. The obligations run for years.

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India's grid had two completely different problems on 14 July, twelve hours apart. At midday it was drowning in power: Gujarat curtailed about 9 MU of wind and solar, and the day-ahead price fell to Rs 1.09/kWh in the 1 pm solar hour. After dark it flipped, with the 20:00 peak of 251,139 MW met but still running 1,057 MW short and evening prices striking the Rs 10 ceiling. Frequency was outside its tight band 18.8% of the day, leaning to surplus. Looks like deep solar then a steep evening ramp, though that is inference, and one day is just one day.

It imported 326.9 million units, mostly from the West, and ran the Champa-Kurukshetra HVDC link at 4,027 MW. Yet it finished the evening peak 318 MW short, with load shedding in UP and curtailment in Haryana and Uttarakhand. The reason wasn't a lack of power - it was corridors already breaching their limits, Haryana's transfer capability by nearly 10%. Sometimes the problem isn't how much you can import. It's whether the wires can carry it the last mile.

Wires first, for a change.

PFC has set up a special-purpose vehicle — Satara Power Transmission Ltd — to build a Western-Region line sized to evacuate up to 4,500 MW of pumped-storage potential near Satara, Maharashtra. The point is the order of operations: transmission usually lags generation, leaving plants waiting for wires. Building the corridor before the storage flips that. (4,500 MW is potential, not committed — and the SPV is years from energisation.)

The IEX day-ahead price for 14 July delivery landed at ₹6.33 a unit — up from ₹2.49 on 12 July. The tell was in the bids: buyers wanted more power (523,267 MWh) than sellers offered (462,625 MWh), which is what a supply squeeze looks like on an exchange. Demand near 250 GW, thermal units dropping off on boiler-tube leaks, and the evening got expensive fast. Soft two days earlier, though — a tightening, not a trend.

An R-phase current transformer failed at POWERGRID's Fatehgarh-III substation in Rajasthan on 13 July — and cascaded. It took out a 1,500 MVA transformer, seven more ICTs, four 220 kV buses and about a dozen renewable-evacuation feeders at one of the desert's key wind-and-solar hubs. Not a shortage, not a demand spike — a protection fault unpicking an export corridor. (From the outage register, so root cause is still open.)