Home Battery Planner

Size your home battery

Upload your ESB or Electric Ireland half-hourly CSV and get a battery recommendation tailored to a planned solar PV install — based on your real consumption, not a guess.

  • Two recommended sizes: one to maximise solar self-consumption, one to stay off the grid during expensive hours.
  • Payback estimate with smart-tariff arbitrage, plus a matching inverter suggestion.
  • No signup. Your CSV is processed in memory; reports are encrypted at rest and your MPRN is never stored in plaintext.
Meter data
Export your half-hourly data from ESB Networks or your Electric Ireland account. How do I get this file?
Solar setup
Details of your planned PV installation
Battery settings
Optional — adjust the assumptions used to size your battery
What's already in your data?
Tick anything you already have — your CSV already reflects this usage, so we won't ask you to add it again later.

Your data is kept private and encrypted. We hold onto it so you can come back and tweak future-usage settings — it's never shared or sold.

By uploading you agree to the Terms and Privacy Policy.