PowerPlanner: Solar & Inverter

Plan a solar system, size an inverter or battery, and see exactly what your electricity costs — in one app.

PowerPlanner answers the questions every solar and inverter owner actually asks: how many panels do I need, how big should the battery be, how long will it back up my home, and how much will I really save?

★ SOLAR PANEL & SYSTEM SIZING
• Solar panel calculator — output, efficiency and tilt angle
• Solar planner — a full recommended system built from your load
• Roof panel fit — how many panels fit on your roof
• Series & parallel panel wiring output
• Charge controller sizing (PWM / MPPT)
• String sizing for your inverter's voltage window

★ BATTERY & INVERTER (IPS / UPS)
• Battery size calculator — the Ah you need for your backup hours
• Backup time calculator — how long your battery really lasts
• Battery charging time and charging current
• Battery percentage and battery life cycle estimate
• Panels needed for a battery, battery needed for panels
• What Can I Run? — see which appliances your system supports
• Load wattage calculator for your whole house

★ ELECTRICITY BILL & COST
• Electricity bill calculator by appliance, watts and hours
• Multi-appliance cost calculator
• Time-of-use peak and off-peak tariff costs
• Scan your bill with the camera instead of typing it
• Save your own tariff, unit price and currency
• Monthly savings tracker with charts

★ SAVINGS & PAYBACK
• Solar savings calculator — daily, monthly and yearly
• Return on investment and payback period
• Net metering ROI
• Grid vs generator vs solar, levelised to one cost per kWh
• Compare two scenarios side by side

★ AI ENERGY ADVISOR
• Ask anything about solar panels, batteries, inverters and bills
• Generate a complete system plan from your own numbers
• Export any plan to PDF and send it to your installer

★ TRACK & IMPROVE
• 7-day solar forecast — irradiance and expected generation
• Power outage tracker with backup coverage stats
• Maintenance schedule for cleaning, inspection, battery and inverter checks
• Goals, daily streaks and achievement badges
• Home screen widget showing today's generation and backup at a glance

★ COMMUNITY
Ask questions, post photos of your setup and compare notes with other solar and inverter owners.

★ ELECTRICAL TOOLS
Watt to amp • mAh to Ah • voltage drop and wire gauge (AWG) • fuse and breaker sizing • CO₂ emissions and CO₂ savings

WHO IT IS FOR
Homeowners planning rooftop solar. IPS and inverter users who lose power regularly. Off-grid, RV and van builders. Installers and technicians sizing jobs on site. Students and electricians learning PV design.

WORKS IN YOUR LANGUAGE
English, বাংলা, हिन्दी, اردو, العربية, မြန်မာ, Filipino and Español.

POWERPLANNER PRO
Unlimited AI plans, unlimited AI advisor chat, unlimited PDF exports and no ads. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in Google Play.

Every result is an estimate for planning only. Confirm final designs with a qualified electrician or installer.

Recent changes:
NEW TOOLS
• Scan your bill — photograph it, we read the units and amount
• My Tariff — set your real rate bands so costs match your bill
• What Can I Run? — pick appliances, see backup time instantly
• Roof Panel Fit — how many panels fit your roof
• String Sizing — safe series limits for cold mornings
• Fuse & Breaker Sizing — protect every DC run
• Grid vs Generator vs Solar — true cost per unit

ALSO
• Home screen widget with today's output
• Alerts the evening before a dull or bright day