Calculate exact electricity units (kWh) and bill cost for 0.5 HP, 1 HP, 1.5 HP, and 2 HP water motors, suction pumps, and submersible borewells. See overhead tank fill expenses and prevent the 200-unit protected slab penalty.
Motor & Usage Settings2026 NEPRA Tariffs
Most common residential pump for overhead roof tank
1.0 hrs
Average household run: 45–75 mins daily for single family; 90–150 mins for multi-story.
Standard non-protected slab with fuel surcharge
Divides water motor electricity cost equally across tenants or floors.
Monthly Cost Breakdown1050W Real Draw
Estimated Monthly Electricity Bill
Rs. 1,213
Based on 31.5 kWh / month at Rs. 38.5/unit
Daily Units Consumed
1.05 kWh / day
Cost Per Tank Fill
Rs. 17
Monthly Units (kWh)
31.5 Units
Daily Motor Runtime
60 min/day
200-Unit Protected Slab Threat: MODERATE
This motor alone consumes 16% of your entire 200-unit monthly lifeline quota. If your other appliances use 160 units, this pump will push you to 192 units, instantly doubling your entire bill for 6 consecutive months!
💡 4 Proven Ways to Cut Water Motor Electricity Bills in Pakistan
1. Install Automatic Float Switch
Water tanks overflowing for just 15 minutes a day waste 300+ liters of water and 15–25 units of electricity every month. A Rs. 1,200 float sensor pays for itself in less than 45 days.
2. Avoid Peak Hours (6 PM – 10 PM)
Running a 1.5 HP motor during peak hours costs up to Rs. 52/unit under NEPRA TOU tariffs. Schedule your water filling during morning hours or afternoon to save Rs. 800–1,500/month.
3. Test Motor Starting Capacitor
A degraded 25µF or 30µF capacitor forces the motor to pull up to 40% higher amperage, causing motor overheating and rapid meter spinning. Replace weak capacitors every 18–24 months.
4. Fix Suction Pipe Air Leaks
A leaking foot valve or micro-crack in the PVC suction pipe causes the pump to lose its prime, doubling the time needed to fill your overhead tank and inflating bill units.
Frequently Asked Questions (Water Motor Units)
1 HP water pump 1 ghante me kitne unit bijli leti hai?
1 Horsepower (HP) theoretical roop se 746 Watts hota hai. Lekin induction motor ki electrical efficiency aur mechanical load ki wajah se ek standard 1 HP suction pump grid se lagbhag 1,000 se 1,100 Watts draw karta hai. Iska matlab hai ke 1 HP motor 1 ghante chalne par taqreeban 1.05 se 1.10 units (kWh) bijli kharch karti hai.
Overhead tank bharne me kitne unit bijli lagti hai?
Ek aam 1,000 liters (taqreeban 220 gallons) ka overhead tank 1 HP motor ke zariye bharne me 25 se 35 minute lagte hain. Is dauran taqreeban 0.45 se 0.65 units bijli kharch hoti hai. Agar aapka tariff Rs. 38.5/unit hai, toh ek dafa tanki bharne ka kharcha taqreeban Rs. 18 se Rs. 25 aata hai.
Kya pani ki motor chalane se 200 unit protected slab toot sakta hai?
Haan! Agar aap 1 HP ki motor rozana 1.5 ghante chalate hain, toh yeh akele mahine ke 48 se 52 units consume karti hai. Agar aapka baaqi ghar 160 units par chal raha hai, toh yeh motor aapko 210 units par le jaayegi, jis se aapka protected slab khatam ho kar agle 6 mahine ke liye bill dugna ho jayega.
Sub-meter par shared water motor ka bill kaise divide karna chahiye?
Shared water motor ke liye ek sub-meter ya digital kWh timer lagana behtareen tareeqa hai. Agar direct meter nahi hai, toh total family members ya portions ke hisaab se 50-50 ya equal proportion me units divide karke current average tariff rate se multiply karke bill receipt banayi ja sakti hai.