Providing temporary use of online non-downloadable software in the field of energy information for calculating energy usage and efficiency; providing a website featuring online non-downloadable software for providing energy efficiency and energy cost information and product information; providing temporary use of online non-downloadable embeddable web software applications for calculating energy usage and efficiency in the all of the foregoing fields for inclusion in third-party web pages; providing temporary use of online non-downloadable software tools for others to design and create embeddable website applications; hosting interactive web sites of others that allow users to read articles and post content regarding energy efficiency and energy cost information, purchasing, procurement and transportation