☀️🔋PV Calculator – Free Tool to Design Solar PV with Battery Storage | Zero Export, Net‑billing, ROI
Are you planning a solar PV system with battery storage, but none of the free online calculators meet your needs?
👉 https://pvsim.pl/
🌞 PVsim – The PV calculator that thinks hourly!
What can it do?
✅ Hourly simulation – not yearly averages, but every hour with real PVGIS satellite data.
✅ Battery storage – see when your battery charges, discharges, or runs empty.
✅ System optimization – get recommendations for panel count and battery size.
✅🆕 Heat pump simulation – hourly COP and costs using real PVGIS temperature data.
✅ 20‑year ROI – includes degradation, price increase, inverter consumption.
✅ PDF export – one-click report with charts and tables.
🔌 Recommended inverters (affiliate links)
If you’re looking for reliable and cost‑effective inverters for your solar system, here are a few models I personally recommend:
👉 EASUN 6.2KW Hybrid Solar Inverter
https://fas.st/hXbQMH
👉ANENJI 4kw Hybrid Solar Inverter Off Grid
https://fas.st/kedX4
👉PowMr 10.2KW 6.2KW 4.2KW 3KW 1.6KW 1.5KW 1KW Hybrid
https://fas.st/3R7YHU
👉SANDISOLAR 6.2KW 11KW Parallel Hybrid
https://fas.st/LTCgTz
In this video, I’ll walk you through PV Calculator – a tool I built myself because I couldn’t find an existing solution that combines everything:
📍 interactive map for precise location,
🏠 two‑plane roof modeling,
🔋 battery simulation with Zero Export and Net‑billing modes,
💰 20‑year ROI analysis (degradation, inflation, inverter self‑consumption),
📄 one‑click PDF export of your entire project.
What you’ll learn in this video:
Step‑by‑step walkthrough of all features
How to set azimuth, panel tilt, dimensions, and row spacing
How to fetch real PVGIS satellite data for your location
How to configure battery storage and see its impact on savings
How to generate a PDF report to share with your installer
Who is this tool for?
Homeowners planning a solar + battery system
Installers looking for a quick way to test scenarios
Anyone who wants to understand how PV with storage really performs
This is an early version – if you find a bug or have an idea for a new feature, please leave a comment. Your feedback will help me improve the tool.
👍 If you found this helpful, hit the like button and subscribe – it really motivates me to keep building!
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