Interesting I see what I missed by leasing. SolarCity is doing in large scale what you are doing selling the credits. Today looks like a really good day. Maybe 22 KW-Hours. Our system uses 1 dc-ac inverter which is rated to 3.5 KW I think. Occasionally, we see peaks of 4010 or 4011 but never much over 3600-3800 watts continuously. Most of the time it is less than 3000 watts. We are approaching 9300 total kw hours since installation.
The 1964 buick Wildcat had a huge 4 barrel on it and it would leave about 100 ft of rubber when you floored it in 1st gear about 20 ft of rubber when it shifted into 2nd and a loud chirp when it shiffted into 3rd at about 80. Mileage was not too good 13 to 17 on the highway. It had good brakes for drums all of the hot rodders liked the Buick drum brakes they were the best until disk brakes.