IEA RECaBS Interactive REcalculator
"The REcalculator allows you to include the economic values of various externalities - air emissions, system integration, security of supply, employment - in your calculations. It provides the basis for developing recommendations for international and national policies that could level the playing field for renewables by including externalities in energy prices."
"The REcalculator was conceived as an interactive web-based calculation tool. As such, you can do your own comparative analyses of renewable energy technologies and conventional electricity generating technologies. You can also insert your own key parameters to replace the default values." 
- "IEA RECaBS Interactive REcalculator"
- [http://recabs.iea-retd.org/home/upload_filename=Usersguide REcalculator user guide]