The map was constructed using Google Maps API version 2 with data from the EPA EGRID 2006 database. Data from the EPA is extracted via XML and used to build the map markers.
Data for this map was taken from the EPA EGRID 2006 database which presents generation and emissions information on all electric generating facilities in the United States. EGRID is made available to the public and can be found here. According to the EPA, data presented in the database is current as of fiscal year 2004.
Most likely this is due to the fact that your query returned a lot of results and the map needs more time to process your request. In most cases the best thing to do is to be patient. If the map does not appear with markers after 30 seconds then this means your query did not return any results.
GreenFuel Technologies Corp. in no way assumes the responsibility for the accuracy or representation of the data being presented on the map. All data used is available to the public via the United States Environmental Protection Data website. Please consult the EPA for more information as to the proper use of this information.