Tessie posted an update: 1 year, 9 months ago · View
I would like to build a system that uses no or very little electricity. My apartment complex does not include electricity and I would like to keep the bill down. I also have the challenge of owning a plant-eating cat. Any suggestions?
The simple 3 level window farm unit using a 4 watt air pump that I have will take 0.096KWH per day (4/1000*24) or 35KWH per year. On average, I pay $0.08 per KWH so that’s $2.80 per year. This assumes the pump runs 24hours a day everyday. I run mine 6 hours out of the day so that’s $0.70 per year. Most people waste way more than that every year on misc stuff left plugged in around the house. If you add bigger pumps, lights or fans it goes up from there of course, but the math is the same if you know the watts.
The simple 3 level window farm unit using a 4 watt air pump that I have will take 0.096KWH per day (4/1000*24) or 35KWH per year. On average, I pay $0.08 per KWH so that’s $2.80 per year. This assumes the pump runs 24hours a day everyday. I run mine 6 hours out of the day so that’s $0.70 per year. Most people waste way more than that every year on misc stuff left plugged in around the house. If you add bigger pumps, lights or fans it goes up from there of course, but the math is the same if you know the watts.