Why Today Matters

The daily production number drives every energy decision. It determines whether the battery charges from the sun, whether the car gets a free charge, or whether the household buys from the grid.

These thresholds turn a raw kWh number into an actionable decision:

Day Category Daily Production Label
Too low < 20 kWh Red
House only 20+ kWh Orange
House plus 40+ kWh Blue
Charge car 60+ kWh Green
Full charge 100+ kWh Yellow

Today

The main goal of the Today section is to decide which bucket the current day is heading toward and what that means operationally.

The Tesla app only shows today’s generated kWh:

Tesla app showing total generated kilowatt-hours for the current day

The SMA inverter app goes further and shows a forecast for the next hours and days, but the forecast data does not update throughout the day:

SMA inverter app showing solar production forecast for upcoming hours and days

PowerBeat should treat forecast uncertainty more explicitly. A better visualization is a range between best-case and worst-case production:

PowerBeat today view showing production range between best-case and worst-case forecast

Next: Devices, turning energy strategy into device-level actions.