As to the life expectancy of the system, I am guessing about ten years before we see a need to replace or repair some of the electronics.

As to the break even point, we will have to wait until the full system is up and running and see what a full month of utility savings turns out to be.

The inverter, battery pack and generator have been in use for about three years and has saved our fish on several occasions already as we have had some long term power outages. One charge controller has been mounted on the wall for that time as well and was only powered up for the first time last week. The other one is still in the box and should be mounted and fired up next week, if all goes well.

Oliver