How did the electricity blow out once you had 2 100W lamps? That’s 200W whereas a toaster or hair dryer commonly uses 1200-1500W.
Also, energy has a price and we can just measure it. At 20c/kWh, which is above average US retail electricity cost and probably enough to pay for carbon offsets too, 200W * 1h/day* 20c / kWh = 4 cents/day, cheaper than most antidepressants by an order of magnitude.
I was thinking more about price in terms of carbon cost, but this should follow from the USD calculation, assuming that this is roughly proportional to some quantity of CO2 released. My prior knowledge on wattage was lacking, so I guessed 100k lumen for ~8-12 hours per day to consume more electricity than it actually does.
How did the electricity blow out once you had 2 100W lamps? That’s 200W whereas a toaster or hair dryer commonly uses 1200-1500W.
Also, energy has a price and we can just measure it. At 20c/kWh, which is above average US retail electricity cost and probably enough to pay for carbon offsets too, 200W * 1h/day * 20c / kWh = 4 cents/day, cheaper than most antidepressants by an order of magnitude.
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 :-)
I was thinking more about price in terms of carbon cost, but this should follow from the USD calculation, assuming that this is roughly proportional to some quantity of CO2 released. My prior knowledge on wattage was lacking, so I guessed 100k lumen for ~8-12 hours per day to consume more electricity than it actually does.