| Thanks to the Lighting Energy Controller (LEC), the Swiss subsidiary of the American multinational saves 12,200 francs a year on its lighting costs for a capital investment of 23,000 francs. The return on investment (ROI) is less than 2 years.
|
The equipped building
The CCB Bolligen warehouse is located in a ground floor area that has no natural light. It is lit by 600 x 58 Watt fluorescent lamps for 18 hours on working days at an annual electricity cost in the region of 50,000 francs.
Result
Current consumption was reduced by 19.85%, which was even more impressive because 45% of the existing fluorescent lamps were already fitted with an electronic ballast (which is supposed to fulfil the same function as the LEC).
|
Annual electricity consumption
for lighting a 70-vehicle bus depot |
CHF
30 351 |
| Total annual savings |
CHF
6 889 |
| on electricity |
19.66% |
CHF
5 967 |
| on lamp replacement |
CHF
922 |
| Capital expenditure excluding VAT |
CHF
12 200 |
| Return on investment |
Year
1.77 |
|
