PowerPlanner: Solar & Inverter

How many panels do I need? How big a battery? How long will it back me up — and what is it all actually saving me? PowerPlanner answers those questions in seconds, then keeps score for you month after month. SIZE YOUR SYSTEM Work out panel output, the battery Ah you need, real backup time, charge controller size, string voltage, roof fit, and series or parallel wiring. Forty-plus calculators, each one built around a single question and a plain-language answer. KNOW WHAT POWER COSTS Enter an appliance or a whole house and see the bill. Add peak and off-peak rates for time-of-use pricing. Photograph your paper bill and the app reads the numbers off it. Save your own tariff and currency once, and every calculation uses it. SEE THE SAVINGS ADD UP Log a bill each month and watch the savings and CO₂ chart grow. Get payback period, return on investment and net metering ROI. Compare grid, generator and solar levelised to one cost per kWh, or run two scenarios side by side. ASK THE AI ADVISOR Describe your setup and get an answer about panels, batteries, inverters or your bill. Generate a full system plan from your own numbers, then export it to PDF and send it to your installer. STAY AHEAD OF IT A 7-day solar forecast for your exact panel. An outage log that shows how much of the blackout your backup actually covered. A maintenance schedule for cleaning, inspection and battery checks. Goals, streaks and badges. A home screen widget with today's generation and backup. ASK OTHER OWNERS Communities where you can post photos of your setup, ask questions and compare notes with other solar and inverter owners. BUILT FOR Homeowners planning rooftop solar. Inverter, IPS and UPS users who lose power regularly. Off-grid, RV and van builds. Installers sizing jobs on site. Students and electricians learning PV design. EIGHT LANGUAGES English, বাংলা, हिन्दी, اردو, العربية, Burmese, Filipino and Español, with full right-to-left support. POWERPLANNER PRO Unlimited AI plans, unlimited advisor chat, unlimited PDF exports and no ads. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period, and your account is charged for renewal within 24 hours of the end of the current period. Manage subscriptions and turn off auto-renew in Account Settings after purchase. Every result is an estimate for planning only. Confirm final designs with a qualified electrician or installer. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/