sure, ballpark math: 10c per KW hour, approx a 200W panel. assume 10 perfect hours of sun each day (unlikely), then you have 20c a day. $4 a month, $50 a year,

sure, ballpark math: 10c per KW hour, approx a 200W panel. assume 10 perfect hours of sun each day (unlikely), then you have 20c a day. $4 a month, $50 a year, so that takes you 20 years (simple math, none of the typical MBA voodo applied).. and its the weekend my brain is on holiday and no spreadsheet on the ipad, so that could be totally wrong.