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What kind of light were you using? I currently use 5w LED grow lights for garden vegetable hydroponics. They are very cost effective. At about 12p/kwh, make it
by thisone 9y ago
What kind of light were you using?
I currently use 5w LED grow lights for garden vegetable hydroponics. They are very cost effective. At about 12p/kwh, make it easy and say lights on for 10 hours a day, that would be 1 kwh every 20 days per light, so 12p per 20 days per light.
From what I understand from people who need to also provide heat to their crops, what they save in electricity cost with LEDs, they end up spending in heating costs. So in some cases it can be a bit of a wash
- jrapdx3 9y agoAt the time I was using metal halide/HP sodium lamps. Not as efficient as LED to be sure (LED gives >1.5 times the output per watt) but at scale, even with LED, the energy input required remains substantial. LED does have advantages, e.g., easier to supply illumination at plant level, but indoor growing is still not a cheap or easy thing to accomplish.