Sep 26, 2017 · Stand-alone system: a stand-alone system works well for an off-grid solar system by storing electricity for nighttime or whenever the sun doesn't shine sufficiently, such as during cloudy days. The price for a stand-alone system ranges from $2,000-$12,000. The prices depend on the size of the system needed. Multiple ways of connection of the solar panels, supporting parallel, series, or a combination of the two; For off-grid or for on-grid System. Perfect for all of life’s adventures. Good Bendability :flexible design enables the solar panel to be curved to a maximum 30-degree arc, mounted on a curved roof, RV, travel trailer, marine, van, truck ... Jan 07, 2014 · is double the National average. Before my “Off Grid” Solar, My average monthly usage was 1250 Kwh and would cost me today $ 350.97 for that much usage. Today, with off grid Battery solar, my 650 kWh utility usage costs $141.99. A savings of $ 208.98 per month on a 3,000 watt set of Solar panels. That is a return