Calculate Your System Efficiency, Savings & Return on Investment

Energy ROI & Payback Calculator

Ideal for retailers, installers, and project planners. Enter basic system values to estimate solar production, savings, and overall payback period.

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Thank You !
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GS Energy Systems

How much can you
save with solar?

Answer 4 quick questions — get your personalised savings estimate.

Step 1 of 4
What's your electricity bill?
Enter your most recent bill amount
Rs
Rs 5,000Rs 200,000
Step 2 of 4
Which month was that bill for?
Used to estimate your full-year usage from one bill
Step 3 of 4
What's your plot size?
Most homes in Karachi fall in 120, 240, 500, or 1000 yard sizes. Pick whichever range fits yours.
Plot bigger than 1000 yards or commercial? Talk to us directly →
Step 4 of 4
Which system type?
Choose what suits your situation best
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On-Grid
✓ Cheapest upfront cost
✓ Sells excess via net metering
✗ Goes off when grid goes off
Best for: Reliable supply areas
Recommended
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Hybrid
✓ Battery backup included
✓ Works during load-shedding
✓ Stores daytime solar for night
Best for: Most Pakistani homes
You could save
over 25 years vs paying K-Electric at current rates
Recommended System
Estimated Cost
installed, all-inclusive
Payback Period
then pure savings
Annual Savings
Year 1 estimate
Your bill — before vs after solar
Month-by-month comparison based on seasonal usage
Without solar / year
With solar / year
You save / year
System Breakdown
What you'll get installed
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Solar Panels
🔌
Inverter
📋
Net Metering
Included
🏗️
Install Time
5–10 days
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Total Capacity
Share your savings
Show your family what solar could save them too
Get a custom proposal on WhatsApp
Our engineer will design your system and send a PDF proposal within 48 hours when you share your recent bills and exact location.
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For the 48-hour proposal, please have ready on WhatsApp:
• Your last 3 K-Electric / DISCO bills (photo or PDF)
• Exact location (Google Maps pin or address)
Without these we can still send a generic estimate, but custom proposals take 5–7 days.
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Got it!

Someone from our team will reach out within 1 business day.

I'll send them later, just contact me first
Calculated Your Savings?

Let Us Help You Choose the Right Products

Our specialists can match your calculated system size with compatible hybrid inverters, lithium batteries, and accessories from our catalog.

Get Product Match