Thanks for taking the time to reply to this thread. The PVWatts Calculator lists us at 6.37 this month and going up from here to 8.09 for June and down to 5.79 for Oct. The lowest is 4.11 in Dec but this system will not be used as much by then. As for wether or not we use power in the daytime, as originally stated this is a secondary array, not the primary. My primary is a 24v system with 3000 watts in the array and a 3600AH (Surrette) battery bank. We are in the process of building the cottage up by the road and are at the point where we are spending time there more at night, but not were we are ready to move freezers and such and therefore not the main array at this point. The 7 batteries are brand new (installed 4 days ago). Once we have completely moved into the cottage, this array will be moved into the livestock area where it will be used to power the 12 security lights up there and a small water pump for watering the chickens, turkeys, goats and the cow so it will only be drawing out 1000w a day. At only 20% drain on its capacity these batteries will last far longer than a year or two. Right now my issue is getting through the next 5-6 weeks until we are ready to finalize the move up to the cottage and take the main array with us. As for the SOC under a load, this is the first time I have encountered that idea. Any clue where I might find that info? Seems as though that would be a great resource to share with my friends here in the valley as many of them are finally seeing there is more to solar than overpriced Harbor Freight "complete" (junk) systems.