Welcome to the Energy Underground!PECO is pleased to provide the Energy Underground® website as a FREE service to increase understanding of natural gas safety, how natural gas is produced and how it improves the world around us. Teachers, order FREE materials!Register here to order these FREE materials for your classroom! These programs educate students on the importance of natural gas safety. CLICK HERE TO ORDER Watch movies featuring Sniffy®!Watch movies on natural gas safety featuring Sniffy® and Professor See! WATCH MOVIES Play Games!Enjoy games featuring natural gas safety. CLICK HERE TO PLAY GAMES