Lets say your using a pair of Metal hides using a total of 3 W=KWH per day. If these lights reduce your usage to 2 KWh per day and your electric charge is 0.11 per KWH hour then you are saving 11 cents per day in electrricity. Now at a cost a 2,490 for a 4" system it will take you 62 years of energy savings to make this upgrade economical.
But if going to have to by a light fixture anyway then you might be paying $500 to $1000 for it so you would only be paying an added $1,500 for this fixture. so you would have pay it off much quicker.
Now there may be added saving an bulb replacement costs though. With the MY T-5 fisture you would be spending about $100 a year on bulbs. But for the LED's we do not know how long they will lst and what replacemments will cost.
Dennis
QUOTE]
Originally posted by kinerson
Are you sure it's 88w? I think they said it saves about 1/3 energy costs compared to a XM 20000k 250w so... [/QUOTE]