Light replacement calculator
Enter tariff from your power bill and up to 5 light replacement scenarios including old and new wattage (after replacement), number of globes and daily usage in hours/day. Press Calculate button to show results.
You can add or change the data and recalculate to see the difference.
This light replacement calculator is indicative only, and should not be solely relied upon as a complete calculation tool for any rebates or savings. Homelab accepts no responsibility for errors or miscalculations of this calculator. The results may not be accurate as some input data depends on correct estimation.
The table below shows typical light replacement options, with before and after wattages. The wattages are quoted on like-for-like basis, that is, the new light should produce same or marginally higher light output.