Solar System & Electricity Bill Calculator
Estimate your required solar capacity, panel count, roof space, and battery storage based on active NEPRA progressive tariffs.
Electricity Usage
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Rooftop Structure Type
Grid Meter Phase
Night AC Battery Storage
Run inverter AC during night loadshedding
Recommended System Architecture
Calibrated for Tier-1 580W N-Type Bifacial TOPCon Modules
Optimal for continuous AC loads. 4,000+ deep cycle lifespan (approx. 10 years).
Financial Returns & Net-Billing Payback
2026 NEPRA MODELIf hybrid storage exceeds your upfront budget, install a smaller daytime system without night batteries:
*Skips expensive batteries. Runs your household and ACs on solar during the day, dropping your grid consumption below 200 units to qualify for base tariff slabs.
Contractor Quotation Validator
Have a quote from a local installer? Verify if you're being overcharged.
Independent Solar Engineering Audit for Pakistani Homes & Commercial Plazas
With electricity tariffs in Pakistan crossing Rs. 60 per unit in upper progressive slabs, solar energy has transitioned from an elective amenity to a vital financial safeguard. SOLARAUDIT.ONLINE was engineered to provide transparent, un-gated mathematical audits free from contractor sales bias.
Regional Grid Utility Calculations & Dedicated DISCO Audits
Every distribution company in Pakistan operates under distinct solar insolation profiles and local load constraints. Audit your exact utility tariff:
Explore Solar Sizing Guides & Cost Breakdowns (Pakistan 2026)
Detailed engineering specs, monthly unit yields, 580W panel counts, and turnkey cost breakdowns by system capacity:
5–6 Marla homes running fans, lights, fridge, & 1 inverter AC. ~350–420 units/mo.
10 Marla homes running 2 Inverter ACs + household load. ~600–750 units/mo.
1 Kanal residences with 3–4 ACs & net-metering. ~1,250–1,500 units/mo.
Commercial plazas, schools, clinics, & large joint families. ~2,000–3,000+ units/mo.
Frequently Asked Questions (Solar Sizing & NEPRA Tariffs)
How many units does 1 kW solar produce per day in Pakistan?
Across major Pakistani urban centers (Karachi, Lahore, Islamabad, Multan), 1 kW of installed solar capacity yields approximately 3.8 to 4.2 usable kilowatt-hours (units) per day after applying a realistic 0.78 system derating factor for high summer temperatures and airborne dust deposition.
Can I install solar net-metering on a single-phase electricity meter in Pakistan?
No. NEPRA distributed generation regulations strictly require a 3-phase bidirectional green meter for net-metering. Single-phase consumers must apply to their local DISCO (such as K-Electric, LESCO, IESCO, or MEPCO) for a Phase Conversion and Sanctioned Load Extension before their net-metering application can be processed.
What is a fair price per watt for residential solar systems in Pakistan in 2026?
Based on current wholesale hardware benchmarks, turnkey on-grid residential solar installations typically range between Rs. 75 and Rs. 95 per watt. Turnkey hybrid installations (including 48V LiFePO4 battery storage) range between Rs. 105 and Rs. 135 per watt. Quotes exceeding Rs. 150/W indicate excessive contractor markup, while quotes under Rs. 95/W for hybrid systems indicate compromised hardware quality.
How does the 2026 NEPRA Net-Billing policy affect solar payback periods?
Under NEPRA's Net-Billing regime, exported units are credited at the National Average Energy Purchase Price (NAEPP), while imported units are billed at progressive retail slab tariffs. Because approximately 70% to 75% of residential solar generation is consumed directly during daylight hours (avoiding high peak retail tariffs), typical payback periods remain robust at 2.0 to 2.5 years.
Which battery is recommended for running an inverter AC overnight on solar?
A 48V Lithium Iron Phosphate (LiFePO4) battery bank (minimum 100Ah to 200Ah usable capacity) is strongly recommended. Deep-cycle lead-acid tubular batteries only offer 50% usable depth of discharge and quickly degrade under inductive AC compressor loads within 12 to 18 months, whereas LiFePO4 cells deliver 4,000+ charge cycles at 85% depth of discharge.