The volume of a prism is the product of the area of the base and the distance between the two base faces, or the height (in the case of a non-right prism, note that this means the perpendicular distance).
In 2017, most homeowners are paying between $2.87 and $3.85 per watt to install solar, and the average gross cost of solar panels before tax credits is $16,800. Using the U.S, average for system size at 5 kW (5000 watts), solar panel cost will range from $10,045 to $13,475 (after tax credits). Thatâs nine percent lower than it was a year ago, and solar panel system costs are continuing to fall.
Tile Roof Average Costs. Ceramic roof tile costs starts at approximately $5 to $15 per square foot but could cost as much as $15 to $30 per square foot or more. For a 2,000 square foot roof, this amounts to a total cost of around $10,000 to $60,000. Concrete roof tile costs are generally around $5 to $10 per square foot, or $10,000 to $20,000 for a 2,000 square foot roof. Tile is a heavy material, and it is sometimes necessary to upgrade a home's structural support to accommodate the added weight of a tile roof.