If i can generate 900w an hr into energy reserves for an normal house that uses 0 gas is that good

Question

like electric stove and wood heat no air conditioning electric hot water heater and water pump

Answer 1

you'll need a nominal 2kW system or a 1.5 kW system with a sun tracking system.  Yes the sun may be up for 9 hours but the angle kills a panels ability to use the energy..

Answer 2

That's great, It will save you about 10 cents/ hr or per day whichever you meant.

That is about the average household cost per 1000 watt hrs.