coolate wrote:So I am looking to use a 300w panel to charge my car. I am only expecting it to charge a few miles a day, but I am trying to figure out how best to do this. First I thought I could use a battery and an inverter to charge at 200 watts or so, but it sounds like that would not even cover the charging overhead? Maybe I can charge the battery and use a bigger inverter to charge closer to 1200 watts? Thoughts? Thanks for all the number crunching and sharing! It's been a big help!
. You can walk few miles a day. If you really want to be green.
You will have a system that costs at least 1000$ and it will give you less than 10 cents per day!
You need 10 000 days, or 27 years to somehow make it reasonable. Just buy grid electricity.
In some places you can opt to buy ONLY green power.
If you really want to do any reasonable amount of Leaf charging with solar (offline
you need at least 20x250W panels with buffering pack (at least one Powerwall). This would give you
at least half of the battery on a good day. Without battery you have to keep your car home during mid-day.
It will not help if you go from one 300W panel to two, four, or even 10. It just doesn't work efficiently.
You could run your PC and speakers on 300W panel though. But with at least two big car batteries as a buffer.