Method for managing charging service comprising independent Installers, independent utilities, independent electric charging customers, CO2 levels, and independent energy markets, the method comprising: electronically calculating cost of service on a periodic basis based on a plurality of dynamically changing influencing parameters; electronically determining a capital cost of installation; obtaining customer's zip code to determine regional variations in installation cost; estimating customer's location from customer's IP address to determine regional variations in installation cost; Soliciting information about conditions at an installation location which may affect installation cost by soliciting customer input in response to an online questionnaire; soliciting an address of the installation location, then obtaining data comprising age of a building, size of the building and number of units from publicly available data bases, to determine installation cost.