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Originally Posted by oil pan 4
Has any one tried to quantity how many KwH per acre it takes to mow?
To see how doable and affordable such a rig would be.
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From someone like us who has already done some math:
Lawn Mowers I - John Saves Energy
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My ½ acre lot with ~¼ acre of lawn requires ~0.7KWH of energy from the battery and 1KWH of electricity to recharge the battery. That’s about 10 cents per week to mow my lawn. Since solar panels provide all my electricity, my lawn mower is effectively solar powered.
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So...~4kwh per acre. 6 to do his 1.5 acres. Just a rough estimate...YMMV.
That's a fair bit of juice. 60-cents per mow at our electricity rates here...but still a lot less than you'd pay in gas. You'd need roughly an 8kwh battery (as you can't drain 100% of a charge)...enough for an around-town EV!
(If i was doing it, I'd be building a multi-purpose battery)
Thinking "hybrid"...If you were generating electricity, and mowing it in an hour, you'd need an engine putting out 10hp continuously, which would chew through approximately 2.6 litres (2/3rds of a gallon) of gas an hour...at our gas rates, that's about $3.25. You guys at $2.50 or so a gallon would still be paying $1.70.
OP: How much fuel are you using to mow it at the moment?