The average solar energy system size in the U.S is approximately 5 kilowatts (kW). Based on the average price of $3.36/watt, a 5kW system would cost $11,760 after tax credits. Below are some average 2015 quotes for other solar energy systems by size: 6kW solar energy system cost: $15,000. 8kW solar energy system cost: $20,000.
Pros: 1  Economical option. Homeowners appreciate the sleek appearance of an asphalt-paved driveway at a lower cost than concrete or paver surfaces. 2  Flexible in extreme climate conditions. Asphalt driveways typically cost $2 - $5 per sq foot to install - more than gravel, but much less than many other options. 3  Long lifespan.
Expect to pay about $2.25 per square foot for basic driveway resurfacing. So a typical residential driveway of 750 square feet would cost about $1,687. If you want patterns or colors, you need to pay more, around $4 to $8 per square foot, or $3,000 to $6,000 for a 750-square-foot driveway.