Maximizing production by charging near the point of production

Dark green is the guerrilla system of ~50 panels which starts shutting down during periods of high production.  Today, I charged a car at 15 amps (3.6-3.8kw) from about 11 am until about 5pm.  The charge demand was from a point near the panels so the power the Curb associates with the guerrilla system was reduced by the 3.6-3.8kw. That demand lowered the voltage enough that I had few to no high voltage shutdowns.  The upper light green presents production of the roof top system which pegs out at about 5kw for near 5 hours.

The car received about 22 kwh of energy.  In the absence of that demand, some of that energy would have been lost to inverter high voltage shutdown.

South Field PV project update 3/24/19

https://photos.app.goo.gl/y5cUoFRRBPo5umUk7

About 50 panels are fed from the "new garage" through a ~200' run of aluminum wire that was intended, 30 years ago, to carry 50 amps.   I'm seeing up to about 7kw from those panels.  At those peaks, the voltage rises to 260+v and causes some inverters to shut down.  Apparently due to insufficient capacity of that aluminum wire as well, perhaps, due to insufficiency of the supply to my main breaker panel.  The 50 panels should be capable of producing about 10kw which should match the 50 amp capacity I expected.  As it is, I start having trouble below 7kw or about 30 amps.

I am exploring the possibility of adding another 100 amp wire to the new garage.  Maybe a total of about 30kw.

Update 3/27/19:
A BlueBonnet guy came by today to discuss service upgrade.  He confirmed my suspicion that, ~30 years ago when I upgraded from 100 amp to 200 amp service, the transformer and supply wire was not likely upgraded.  He said my service wire looked like 4 ga.  That size aluminum will handle only about 55 amps at reasonable temperatures.  He said in a month or so that they would set another pole at my chain link fence to hold a new transformer and support heavier wire.  The current transformer is likely 15kva; a new one will probably be 25kva.  New aluminum supply will be 2/0 or 4/0; I don't recall which he said.  2/0 should do about 110 amps and 4/0 about 150 amps.  In addition, the wire run from the transformer to the service entrance will be only about half what it is now.
Bottom line: most of my trouble IS likely due to insufficient service and the problems will almost certainly disappear when BlueBonnet does the upgrade in a month or two.
If I can only push ~50-60 amps into the grid, that is only  ~12kw.  VERY close to where I encounter trouble.  After upgrade, I hope to do 50+ kw!

I asked about a lower voltage supply but he was non-committal.  Lower voltage, say 235-240 v, would give me more head room before inverters shut down.  Current static voltage is about 245.

Update 4/2/19
BlueBonnet contractor came out and cut trees to clear a path for the new supply line.  I hope the upgrade is only a week or so away.

I've recently added 12 more panels to the South Field.  They are near useless to me until the upgrade happens.
https://photos.app.goo.gl/hUcmfanF8G9Lw7DMA

Junction Museum Opening 3/23/19

https://photos.app.goo.gl/C7geDqsSSYFrLzQT9

I met my great uncle Frank only once when I was about 10 and we were passing through Junction returning from a family vacation in Colorado.  That would have been about 1953.  Though I lacked appreciation at the time, Frank was a well known law man having served as Texas Ranger, possibly Arizona Ranger, Game Warden, and Sheriff of Kimble County.  At the time I met him he was retired and doing gun smithing out of his garage.  He had a notable gun collection which included a pistol that, as a youth, he was given by John Wesley Hardin.  My aunt Alice lived in Junction with her aunt and uncle during the Depression when her family had difficulty maintaining the entire family.  Aunt Alice graduated from Junction High School about 1938.  My aunt Alice was named for her blood aunt who was married to Frank.  The Museum's recognition of him is in photo #9.
Google things like "Frank Patterson Texas Ranger" to learn more of him.  I've recently learned that he may have been involved in the Porvenir Massacre in 1918.

Jean and I first visited the Museum in an old location about 1980 (+/-).  Head honch at the museum, Frederica Wyatt, displayed a clipping file  on uncle Frank and pointed us to the graves of Frank and Alice.  Over the years, I've dropped in the museum whenever passing through Junction.  With the SuperCharger a  couple of years ago, Junction has become even more attractive to me.

Since 2016, Ms Wyatt and The Museum have been working on refurbishing the old hospital as the new museum building; today was the grand opening.  Ms Wyatt now spends most of her time in a wheel chair.  She is in photo #7; in blue with a walker.