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Solar happenings
- Thread starter vfx
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- Energy Environment Policy
SByer
'08 #383
With a 12/12 pitch roof, even today (with 3 years of improved reliability) micro-inverters wouldn't be an answer for us. A different roof, a different answer. (We ended up with 2 fan-less Xantrex inverters on a shady part of the house).
sp4rk
Banned
Great idea ... but I can see myself being SUED by my Homeowners Association for installing this on my deck.
And my deck faces south! And is right above my garage. Would be perfect to trickle charge the car.
And my deck faces south! And is right above my garage. Would be perfect to trickle charge the car.
sp4rk
Banned
I am SO confused by charging.
My EV life starts, allegedly, first week of June ... with a Leaf. For it, I placed a 220V level 2 charger on my garage wall.
I am guessing this kind of solar panel will not provide 220, 30 amp circuit for the level 2? Only 110.
So, if the Homeowners Assn approve it (now found Ill. House Bill 5429, which seems to protect me) I would use this solution for 110v charging only?
Then, when my Model S arrives next year, my existing level 2 is not compatible (without an adapter)? CHAdeMO is not compatible.
But I can use the 110v solar panel ... but wait about 2 weeks for a full charge for the 85kw battery?
My EV life starts, allegedly, first week of June ... with a Leaf. For it, I placed a 220V level 2 charger on my garage wall.
I am guessing this kind of solar panel will not provide 220, 30 amp circuit for the level 2? Only 110.
So, if the Homeowners Assn approve it (now found Ill. House Bill 5429, which seems to protect me) I would use this solution for 110v charging only?
Then, when my Model S arrives next year, my existing level 2 is not compatible (without an adapter)? CHAdeMO is not compatible.
But I can use the 110v solar panel ... but wait about 2 weeks for a full charge for the 85kw battery?
From the article linked above:
So this panel "plugs in" to an outdoor electrical outlet, but feeds power INTO that outlet. It will reduce your total household energy usage (on that one side of the house 220v feed). But it can't be used to directly charge an EV.
You plug your panels into the grid. They reduce the amount (or put back) electricity purchased. This way the power is 100% utilized. You can use your 30A Level 2 charge (it is not CHAdeMO, it is SAE J1772) for the Model S with an adapter that comes with the car (it is quite small).
Norbert
TSLA will win
It was a really good day on May 25th.
Screenshot from the SMA online portal: PV electricity produced in Germany
mostly red=80% of nominal output. Solar power >1GW from 6:30AM to 8:15PM. During noon, some 6GW were exported to neighbor countries. They have troubles cooling their thermal power plants in the heat of the noon :frown:
Screenshot from the SMA online portal: PV electricity produced in Germany
mostly red=80% of nominal output. Solar power >1GW from 6:30AM to 8:15PM. During noon, some 6GW were exported to neighbor countries. They have troubles cooling their thermal power plants in the heat of the noon :frown:
Good for solar, but I'd be interested in talking to the Germany utilities' system operators. With this much power flowing from unpredictable generation sources, they were probably sweating bullets that a fluffy cloud might float over a large solar array and have a serious impact. PV without storage is operationally very scary.
Norbert
TSLA will win
That's a bit of PV FUD right there. With the amount of PV Germany has distributed over the entire country, it would take a storm front quickly sweeping over a significant portion of the country in the middle of the day to cause issues - and even then that would be easily forecasted so they would have their thermal plants ready to spin up as it occurred. Many studies have confirmed that distributed generation offsets most of the intermittency issues that can plague a single large plant.
VolkerD's link above has a link to actual production data from SMA which is the major inverter supplier for Germany (and much of the world). Can you find any days where a significant portion of PV output simply drops?
I don't disagree that storage would be a benefit - but primarily this would be useful to extend power towards the evening hours right after the evening hours when demand typically remains strong.
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