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.
So what is the current cost of residential solar power? As of early 2015, itâs approximately $3.00 per installed watt. The average sized solar panel system is 5,000 watts, so this brings the total cost to $15,000. That 15k figure is just an average amount.Systems can cost more or less mostly depending upon a homeownerâs energy usage. That $3.00 per watt is, if anything, on the very low side. Pricing can vary due to specific brand of panels used, inverter brand, and regional pricing differences.hat 15k figure is just an average amount. Systems can cost more or less mostly depending upon a homeownerâs energy usage. That $3.00 per watt is, if anything, on the very low side. Pricing can vary due to specific brand of panels used, inverter brand, and regional pricing differences.