Running Costs: Watts, Hours, kWh and the Monthly Bill
This lesson is part of the course
In this lesson
You turn the watts and hours of the tank's devices into kWh per month and a monthly electricity cost, then price an LED upgrade by its yearly saving and payback time.
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Lessons in this course
- Tank Volume: Shapes, Litres, Gallons and Net Water Locked
- Water Changes: Dilution, Repeated Changes and the Steady State Locked
- Change Schedules: Keeping the Peak Under a Limit Locked
- Dosing by the Label: Water Conditioner and Fertiliser (C₁V₁ = C₂V₂) Locked
- Heater Watts and Filter Turnover Locked
- Stocking: Adult Size, a Fictional Rule and the Current Load Locked
- Running Costs: Watts, Hours, kWh and the Monthly Bill Locked
- Water Test Log: Rolling Averages, Out-of-Range Counts and a Trend Chart Locked