First, US$800, at nice, will get you about 200 @ 120V when you incorporate a grid-tie inverter and do all of the work yourself - AND - use low cost chinese language fabric and/or orphan panels (bankrupt enterprise or leftovers). Two panels 300 watts @ 24V = $500 One 1KW grid-tie inverter = $250 Miscellaneous elements and fabric, racking etc = $250. 300 watts @ 24V = 12.5A. 600 watts @ 24V = 25A 600 watts @120V = 5A. About sufficient to run a few lights, potentially a laptop, in all probability a small (very small) electrical kettle in full solar. And there you are. In case you read the grid-eraser standards cautiously, it tells you that their Maximus (at $5,000) gives you about four hundred watts of vigour. You might do better your self. What is "1,000 watts" is the inverter. The entire relaxation of them aren't any better, some are so much worse. Unless you are willing to spend within the mid $20,000s to about $40,000 you're going to no longer be competent to aid any style of principal appliance, much much less electric heating elements, have the vital storage for darkish days or the resilience you want. Count the minimum quantity of watts you ought to function your household on a steady groundwork (traditional load). Investigate the highest amount of energy you're going to need at a given point (maximum load). Most often, you're going to have got to be ready to generate 2 x the highest load from the modules (solar panels) or at the least 3 x the usual load in 24 hours. You will need to be in a position to store at least 2 x your natural load. These 'rules-of-thumb' enable you to manage some dark days, snow, rain, and no longer wreck you batteries, and also account for the truth that peak PV generation occurs for handiest about 2 hours per day except you utilize monitoring racks - so they can prolong that to about four hours per day. There is a enormous amount of dangerous expertise out there on PV (photograph-voltaic) new release systems. Utility-grade (and measurement) installations run about US$2/watt or so. Residential systems run anyplace from $four to $9/watt relying on the sophistication and capacity. (All costs without subsidies). And the normal US family with fuel-fired warmness and fuel-fired scorching water and cooking needs about 40A (@ 240V), or about 10,000 watts to run normal services together with a refrigerator, washer, lights, laptop, tv, electrical lovers etc. But not AC items, electrical heat, electrical scorching water, electrical dryer, range, hair-dryer or much of some thing else - good, possibly one (1) significant thing at at time.