Sol-Ark 15k, Generator with micro-CHP Redneck version

‪@noddysyacht‬
Got the propane geny working, Well George at Sol-ark did - thanks
1/ I would like that the geny could charge the battery say at 3KW while at the same time sell to the grid at 3Kw. That would allow me to make KW credits at the same time as I extract ever BTU to heat my place.
2/ It would appear that when off grid the Sol-Ark does not use the battery as primary source with the generator just charging the battery as needed. I was expecting with 25KW of battery I would have 12Kw of power even with a 5Kw geny, As long as my 12 hour average load did not exceed the 5Kw geny.