For 100,000 LM, 12 hours a day, that would be 1000W * 12h/day * 20c/kwh = $2.4.
yes, when we did the calculation, it was something like €2 per day (for ~6-8 hours per day). Still very cheap for a depression treatment :-)
For 100,000 LM, 12 hours a day, that would be 1000W * 12h/day * 20c/kwh = $2.4.
yes, when we did the calculation, it was something like €2 per day (for ~6-8 hours per day). Still very cheap for a depression treatment :-)