The day runs in eight 3-hour blocks, midnight to midnight. The number on each sky tile is the energy the sun gives then. The battery holds 12, and sun it can’t hold goes to waste.

Tap a block in a job’s row to put the job there, and tap it again to take it off. Tap a card under the board for that job’s full rules.

Jobs warm the house. From −3 to 0 it’s comfortable and free (green). Above 0 the A/C spends 1 energy a point (red), and below −3 the heater does (blue). Time hot jobs for cool hours, or for cold days.

The kiln, the car charger, the dryer and the welder share the garage’s one 240-volt outlet, so only one of them runs at a time. The outlet row shows who has it, and a plug marks blocks where it’s taken.

A job pays only when it’s finished: every block it needs, inside its hours. Charge left at midnight is worth $2 a unit. You see the money only after you run the day.

The battery can’t run dry. If a plan would empty it, Run the day stays off until you fix it.

Wattsworth

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