Peak & off-peak hours — every Pakistani DISCO

Windows above match the standard NEPRA-notified TOU periods for FY 2025–26. Confirm the exact window on your latest DISCO tariff notification before scheduling large recurring loads.

Under the current tariff schedule, off-peak energy for industrial B-2 / B-3 consumers is priced roughly Rs. 12–15 per unit lower than peak. For commercial A-2 customers the gap is smaller — around Rs. 6–9 per unit — but still material on a 3,000-unit monthly bill.

Domestic TOU consumers (mostly larger, 3-phase houses on tariff A-1 TOU) see a gap of about Rs. 4–6 per unit between peak and off-peak.

A welding workshop draws 25 kW for two hours a day. On peak that is 50 units at ~Rs. 45/unit = Rs. 2,250/day. Off-peak the same 50 units cost ~Rs. 32/unit = Rs. 1,600/day. Over 26 working days, moving the shift saves Rs. 16,900 a month — before FPA, QTA and taxes, which scale with energy charges too.

Even for a household with a large AC load, running the washing machine and dishwasher after 10 pm rather than at 8 pm knocks a few hundred rupees off a TOU-metered summer bill.

• Heavy motors — pumps, welders, air compressors, mills. Big kW, easy to schedule.
• EV charging — set the charger timer to start after 10 pm.
• Water heating — geysers and electric boilers run overnight for morning use.
• Laundry and dishwashing — schedule for late night, not evening.
• Cold storage top-up cooling — pull temperatures down in the small hours.
• AC pre-cooling — cool a well-insulated room before peak starts, then run the AC at higher setpoints during peak.

Kitchen cooking, TV, lights and small refrigerators together rarely add up to more than 2 kW in a household — the peak-vs-off-peak saving on those loads is a few tens of rupees, not worth changing routine over. Focus on the top three loads that dominate your bill; solar and inverter batteries are a stronger lever for those than schedule changes.