☀️ Infinity Green Energy
Solar System Calculator
Find the right system size for your home or office
Daily load 0.0 kWh · Peak 0.0 kW
Your Solar Recommendation
How our solar calculator works
This free tool turns your average monthly electricity bill into a realistic solar plan for your home in Pakistan. It converts your bill into monthly units using your city’s electricity tariff, then divides that by how much solar generates in your area — roughly 4 units per day for every 1 kW installed, or about 120 units a month per kW.
A little headroom is added for future load growth and normal panel ageing. Because generation and tariffs differ by location, the calculator uses your city’s data to give you an accurate recommendation.
Worked example: A Karachi home with a PKR 50,000 monthly bill uses roughly 800 units a month. Divide by 120 units per kW and you land near a 7–8 kW system — enough to wipe out the bulk of that bill through net metering.
What size solar system do I need in Pakistan?
Selecting the right solar capacity ensures maximum savings and eliminates high electricity bills. Below is a quick estimation guide based on your current monthly bills and power consumption trends in Pakistan.
Monthly Electricity Bill
Monthly Units Consumed
Recommended Solar Size
~300 – 550 units
3 – 5 kW
~550 – 1,000 units
5 – 8 kW
~1,000 – 1,750 units
8 – 14 kW
1,750+ units
14 kW+
How we get there...
These estimations are calculated based on standard solar panel yields in Pakistan, assuming an average of 4 to 5 peak sunlight hours daily and standard system efficiencies. Actual required sizes may vary based on your specific seasonal load variations, local solar irradiance, and the efficiency of the panels installed.
What the calculator asks you, and why
To deliver a highly personalized and accurate solar estimate, our calculator analyzes three fundamental details about your current energy usage and setup.
Your Monthly Bill
This tells us your current energy consumption baseline. Understanding how much electricity you consume allows us to size your system correctly to target a full utility offset.
Your City
Solar output depends directly on local sunshine levels. Your location details also apply the exact local utility rates, net-metering policies, and regional solar tax credits.
System Type
Whether you choose a standard grid-tied system, battery backup, or off-grid configuration, this choice dictates initial hardware costs, resilience capabilities, and total payback speed.
What changed in 2026 — net metering vs. net billing
On February 9, 2026, regulatory policy for new residential solar systems transitioned from standard net metering to a revised net billing framework. Under net metering, solar owners received a highly favorable 1-to-1 retail credit for all electricity exported back to the grid. The new net billing structure calculates export credits based on dynamic avoided-cost rates, making self-consumption and storage optimization crucial to maximizing return on investment.
What Net Billing Means for a New System Today
- Avoided-Cost Credits: Excess power sent to the grid is credited at the utility's wholesale avoided-cost rate, which is typically lower than retail pricing.
- Time-of-Use Integration: Credit values change based on grid demand, rewarding exports during peak hours and lowering them during midday surpluses.
- Accurate Real-Time Billing: Smart meters measure exports and consumption independently in real-time, replacing historical monthly offsets.
Practical Implications & Strategy
- Battery Storage is Key: Adding home battery storage ensures excess daytime solar energy is captured and used locally, bypassing low grid credit rates.
- Shift Load Profiles: High-energy tasks—like running heat pumps or charging electric vehicles—should be programmed during peak sunlight hours.
- Optimize System Size: System design focus has changed from overproducing grid energy to perfectly matching solar output to home capacity.
How much can you actually save?
Transitioning to solar power can dramatically lower your monthly utility costs. On average, homeowners experience a 50% to 90% reduction in their electricity bills immediately after activation. With rising utility rates, these savings compound year over year, turning an unavoidable monthly expense into long-term home equity.
Most residential solar systems pay for themselves within a 5 to 7 year payback period. After this milestone, the electricity generated by your panels is pure profit, securing your energy independence for the 25+ year lifespan of the system.
*Please note: Actual savings and payback periods are highly dependent on your local utility rates, sunlight exposure, and individual energy consumption. All final figures will be detailed in your custom-engineered quote.
Estimated Financial Impact
FAQs section
Have questions about transitioning to solar energy? Find clear, simple answers to the most common queries below.
How do solar panels work?
Solar panels convert sunlight into electricity using photovoltaic (PV) cells. These cells absorb solar energy and generate direct current (DC) electricity, which is then converted to alternating current (AC) by an inverter for safe home use.
Can solar panels generate electricity on cloudy days?
Yes, solar panels can still produce electricity during cloudy or overcast days, though their efficiency is reduced compared to direct sunlight. They utilize diffuse light to keep generating clean power.
How long do solar panels typically last?
Most modern solar panel systems have a lifespan of 25 to 30 years. Their power output may slightly decrease over time, but they will continue to produce clean energy long after their warranty period.
What is net metering?
Net metering is a billing mechanism that credits solar energy system owners for the electricity they add to the grid. If your panels produce more energy than you use, the excess is sent back, earning you valuable credits.
Is my roof suitable for solar installation?
A suitable roof typically has adequate sunlight exposure, minimal shading from trees or nearby structures, and is in good structural condition. South- or west-facing roofs with an angle of 15 to 40 degrees are generally ideal.
How much maintenance do solar panels require?
Solar panels require very little maintenance. Routine cleaning a few times a year to remove dust, leaves, and debris, along with occasional professional inspections, is usually sufficient to maintain optimal output.
Do solar panels work during a power outage?
Standard grid-tied solar systems will shut down during an outage for safety reasons (to prevent feedback to linesmen). To keep running during an outage, you need a hybrid system equipped with a solar battery storage solution.
What are the environmental benefits of solar energy?
Solar energy is a clean, renewable resource that reduces greenhouse gas emissions, lowers carbon footprints, and decreases dependency on fossil fuels, leading directly to cleaner air, water, and a healthier planet.