Energy Efficiency
Domestic / commercial - Lighting schemes
| 500w halogen outside light 4 hours per day 0.5 Kwh @ 0.15p = 0.30p per day 365 days per year |
30w LED outside light 4 hours per day 0.03 Kwh @ 0.15p =0.018p per day 365 days per year |
|
| £109.50 | £6.57 |
Saving £ 102.93 per year
| 50w gu10 halogen downlighter 8 hours per day 0.05 Kwh @ 0.15 = 0.006 per day 365 days per year |
5w gu10 LED downlighter 8 hours per day 0.005 Kwh @ 0.15 = 0.006 per day 365 days per year |
|
| £21.90 | £2.19 |
This is based on a single fitting on average there are 6-10 fittings per room
Saving £ 19.71 per year
Industrial - Standard option
11 QTY 400W HQI LOW BAY = 465 WATTS EACH INCLUDING BALLAST LOSSES
11 X 465 WATTS = 5.12 KWH X 10 HOURS A DAY
51.20 KWH X 6 DAYS A WEEK = 307.20 KWH PER WEEK
307.20 KWH PER WEEK X 0.15 PENCE PER KWH UNIT = £46.08 PER WEEK
£46.08 PER WEEK X 51 WEEKS PER YEAR = £2350.08
LED option
11 QTY LED LOW BAY 115 WATTS INCLUDING BALLAST LOSSES = 11 X 115 = 1.27 KWH
1.27 KWH = 1.27 KWH X 10 HOURS A DAY = 12.7 KWH PER DAY
12.7 KWH X 6 DAYS A WEEK = 76.20 KWH PER WEEK
76.20 KWH PER WEEK X .15 PENCE PER KWH UNIT = £11.43 PER WEEK
£11.43 PER WEEK X 51 WEEKS A YEAR = £582.93
Saving £ 1767.15 per year
Based on average size industrial unit
Day light dimming is also available on these units that could save up to an extra 40% more energy saving