Current K-Electric peak hours
For Time-of-Use (ToU) residential and commercial consumers, K-Electric's standard peak window is:
- Summer (April – October): 6:30 PM to 10:30 PM
- Winter (November – March): 6:00 PM to 10:00 PM
Every other hour of the day is classified as off-peak and billed at a substantially lower per-unit rate. Always confirm the exact window printed on your latest KE bill, as NEPRA periodically revises the timings.
Why peak hours exist
Karachi's electricity demand spikes in the evening when households turn on lights, ACs, fans and televisions all at once. To keep the grid stable, K-Electric (under NEPRA's tariff structure) charges more during these high-demand hours and rewards consumers who use heavy appliances earlier or later in the day.
How much more do peak hours cost?
On a ToU tariff, peak units typically cost 40–60% more than off-peak units. For a household consuming 600 units a month with even a third of that consumption in peak hours, simply shifting heavy appliances off-peak can save Rs. 1,500–3,000 every month.
Smart ways to use less during peak hours
- Run washing machines, dishwashers and clothes irons before 6 PM or after 11 PM.
- Pre-cool rooms with AC at 5 PM, then raise the thermostat 1–2°C during the peak window.
- Charge electric vehicles, laptops and power banks overnight on off-peak rates.
- Switch to inverter-based ACs and refrigerators — they smooth out demand spikes.
- Use LED bulbs everywhere; lighting load matters most during evening peak.
Am I on a Time-of-Use tariff?
Most domestic consumers using above 700 units a month, and almost all commercial / industrial connections, are billed on ToU. Check the "Tariff" field on your KE bill — if it reads A-1(b) ToU, A-2 ToU or similar, peak hours apply to you. If you're on a flat tariff, peak timings do not change your per-unit rate but reducing peak load still helps the city's grid.
Hour-by-hour cost guide for Karachi households
A 1.5-ton inverter AC consumes roughly 1.2–1.6 units per hour. Running it for the full 4-hour peak window adds about 5–6 units at the highest slab rate plus the ToU premium — that is Rs. 250–350 per day or Rs. 7,500–10,500 per month from a single appliance. The same 4 hours of AC usage between 11 PM and 5 AM costs roughly half. Electric geysers (1.5 kW), water motors (0.75–1 kW) and clothes irons (1 kW) all behave the same way: their cost is mostly decided by when you switch them on, not how long.
Off-peak vs peak — a worked example
A typical 4-bedroom Karachi household with two ACs, a refrigerator, water motor, washing machine and lights consumes about 900 units a month. Of that, around 350 units fall in the evening peak. At an A-1(b) ToU peak rate of roughly Rs. 56/unit vs an off-peak rate of Rs. 31/unit, shifting just 150 of those peak units to off-peak (by pre-cooling, scheduling washing and using timers on geysers) saves about Rs. 3,750 every month — without buying new appliances.
Solar net-metering and peak hours
K-Electric net-metering credits exported solar units at the same time-of-use rate that applies when the export happens. Because solar generation peaks at midday (off-peak) and demand peaks in the evening (peak), most rooftop systems in Karachi pair best with a small battery to time-shift exports into the peak window. Without storage, the export credit is at the lower off-peak rate while you pay the higher peak rate at night — a structural inefficiency worth modelling before you size your system.
Weekend and holiday rules
Time-of-use peak rates apply on weekends and public holidays as well — there is no weekend exemption in the K-Electric domestic ToU schedule. Plan family laundry, ironing and dishwashing for Saturday and Sunday mornings or after 11 PM to keep the savings consistent across the week.
Common myths about KE peak hours
- "My old meter doesn't track peak hours." ToU billing requires a smart/digital meter. If you have a traditional electromechanical meter you are billed on the flat tariff; peak hours don't change your rate but still affect city load.
- "Turning off the AC saves more than raising the thermostat." Restarting a hot room costs more energy than letting the compressor cycle at 26°C. Raise the setpoint, don't switch off.
- "Peak hours are the same all year." Summer and winter windows differ by 30 minutes — check the timing printed on your latest bill each season.
- "FPA reduces during off-peak hours." FPA is a flat per-unit adjustment for the month; it does not vary by time of day. Only the base energy rate is time-sensitive.
Quick answer
K-Electric peak hours in 2026 are 6:30 PM to 10:30 PM in summer and 6:00 PM to 10:00 PM in winter. During these four hours, ToU consumers pay the highest per-unit rate. Shift heavy appliance usage outside this window to cut your monthly bill by 15–25%.