# Solar Estimator > Size your solar system & calculate cost, ROI, and payback instantly. Canonical page: [https://chrome-stats.com/d/com.ahsapps.solarcalculator](https://chrome-stats.com/d/com.ahsapps.solarcalculator) ## Overview - **ID:** `com.ahsapps.solarcalculator` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** DevByDesign - **Category:** TOOLS - **Downloads:** 65 - **Version:** 1.3 - **Last updated:** 2026-03-26 - **First published:** 2026-03-25 - **Publisher country:** PK - **Size:** 18 MB - **Data as of:** 2026-09-12 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.ahsapps.solarcalculator) - **Privacy policy:** [https://github.com/appdeveloper22306-ai/solar-system-estimator-privacy-policy/blob/main/privacy-policy.md](https://github.com/appdeveloper22306-ai/solar-system-estimator-privacy-policy/blob/main/privacy-policy.md) ## Description Tired of overpaying for electricity? Take control with Solar System Cost Calculator — a powerful offline solar sizing tool built specifically for Pakistan.

Simply enter your monthly electricity usage (kWh), required backup hours, and your current electricity rate. The app instantly calculates and prices a complete solar system tailored to your needs.

☀️ SOLAR PANELS

Choose from a pre-loaded catalogue of real solar panels from leading manufacturers:

• LONGi Solar
• Jinko Solar
• JA Solar
• Trina Solar
• Canadian Solar
• Astro Energy

The app supports P-type and N-type modules from 540W to 610W.

Panel quantity is calculated using:

• Your daily energy demand
• 5.5 peak sun hours
• 15% real-world system loss correction

🔋 BATTERY BANK

Select from high-quality LiFePO4 batteries from:

• Inverex
• Pylontech
• Narada
• Crown
• Exide

Available battery configurations include:

• 25.6V
• 48V
• 51.2V

Battery quantity is calculated using:

• Backup hour requirement
• Battery voltage
• Depth of discharge
• Charge efficiency

⚡ INVERTER SELECTION

Browse hybrid and on-grid inverters from trusted brands:

• Inverex
• Knox
• Growatt
• Fronus
• Huawei
• Solis

Supported inverter sizes:

• Single-phase and three-phase models
• Capacity from 3 kW to 12 kW

The app automatically warns you if the selected inverter is undersized for your system.

💰 FULL COST BREAKDOWN

Get a complete financial overview including:

• Itemised cost for panels
• Battery bank cost
• Inverter cost
• Earthing and installation estimate

Includes a visual pie chart showing percentage cost distribution.

All pricing is displayed in Pakistani Rupees (PKR).

📈 ROI & PAYBACK ANALYSIS

Understand the financial return of your solar investment:

• Estimated annual energy generation
• Annual savings based on your electricity rate
• Payback period in years
• Return on investment (ROI %)

🌱 WHY THIS APP?

✅ Works 100% offline — no internet required
✅ Pre-loaded with real market prices in PKR
✅ Covers the most popular solar brands in Pakistan
✅ Uses engineering-grade solar formulas
✅ No account required
✅ No ads, no tracking, no data collection
✅ Completely free to use ## Rankings - #2,173,974 — Overall ## Permissions and access ### Permissions - `com.ahsapps.solarcalculator.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `com.android.vending.CHECK_LICENSE` ## Similar extensions and apps - [Solar Calculator Pakistan](https://chrome-stats.com/d/com.solarpk.calculator) — 8 users - [SolarPrice.pk - Mehran Solar](https://chrome-stats.com/d/com.localsoft.solarprice) — 4 users - [SolarDost - Latest Solar Rates](https://chrome-stats.com/d/com.solarcalculate) — 1,151 users - [Solar Load Calculator Estimate](https://chrome-stats.com/d/com.ibrahim.solarcalculator.solarcalc) — 324 users - [Solar PV Calculator](https://chrome-stats.com/d/io.kodular.naeemshady123.SolarCalculator) — 9,992 users - [Solar Cost Calculator](https://chrome-stats.com/d/com.tungnguyenads.solar) — 263 users - [Solar PV System Calculator](https://chrome-stats.com/d/com.prasunbarua.solarpvsystemcalculator) — 615 users - [Solar Calculator - PV Planner](https://chrome-stats.com/d/com.ilyas.ilyasapps.solarenergytools) — 2,957 users - [Solar Calculator Pro](https://chrome-stats.com/d/com.me.solarplanner) - [Solar Panel Calculator](https://chrome-stats.com/d/com.solarpanelcalculator) — 1,082 users - [SolarMap](https://chrome-stats.com/d/com.pnpmicrosystem.solarmap) — 7 users - [SolarQuantt](https://chrome-stats.com/d/com.ebosoten.solarquantt) — 32 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.ahsapps.solarcalculator)