The following website (because blatant hotlinking isn't nice) contains various implementation and measurement tools. They are largely in the form of spreadsheets: 

• http://www.ghgprotocol.org/calculation-tools/all-tools

SolarCity provides a "Saving calculator" for how much money one can save using their Solar panel system versus traditional PG&E methods:

• http://www.solarcity.com/default.aspx

After running through the data for 500 Pinoleville Rd, Ukiah, CA 95482-7121 I arrived at the following savings calculation as seen in the attachment.