Technical Resources
Energy saving calculator
Enter your existing luminaires and the products you are considering. Figures update as you type. Every row is one like-for-like replacement, so quantity, running hours and days carry across to the proposed column.
1 Luminaire schedule
| # | Existing | Proposed | Actions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| # | Area / type | Qty | Watts each | Hours / day | Days / year | Product | Watts each | Saving / year | Remove |
| Totals | — | ||||||||
2 Costs and assumptions
3 Your estimate
| Existing energy use | — |
|---|---|
| Proposed energy use | — |
| Existing energy cost | — |
| Proposed energy cost | — |
| Maintenance saving | — |
| Total annual saving | — |
| Year | Saving | Cumulative | Net of project cost |
|---|
4 Take it away
Keep this calculator on your phone
Add it to your home screen and it opens like an app, on site or off.
Please read: This calculation is an indicative estimate only, produced from the figures entered above. It is not a lighting design, an electrical survey, or a guarantee of performance or savings. Actual results will vary with site conditions, control strategy, occupancy, tariff changes and installation quality. These figures must be reviewed and verified by a qualified lighting specifier or competent electrical engineer before being relied on for specification, procurement or financial decisions.
