public class Add { private static String rightJustify( String s , int newLength ) { while( s.length() < newLength ) { s =   + s ; } return s ; } private static void justifyAndPrint( String leadingText , int number , int totalLength ) { // convert the number to text String s =  + number ; System.out.println( leadingText + rightJustify( s , ...
Why Solar Energy? A typical residential solar PV panel system in the U.S. costs $3.60/watt after installation, and the solar panels typically save the customer over $20,000 (net) over the course of 20 years. Learn more about the many advantages of solar energy.
How Much Does a 10kW Solar System Cost? As of January 2017, the average cost of solar in the U.S. is $3.26 per watt ($32,600 for a 10 kilowatt system). That means that the total cost for a 10kW solar system would be $22,820 after the 30% Federal ITC discount (not factoring in any additional state rebates or incentives).