If your football team stops over after your winning game then the iStore can respond with manual overrides. If you have your unit setup to sip the power from your PV system during the day only but have unexpected high demand you can simply unlock the screen(press and hold the power button for 8 seconds) then wake it up to run immediately(press the power button for one second). Call us and we can discuss intermittent high demands and how best to handle them.