Invenergy Solar Development - Membership Directory Go back to directory. Invenergy Solar Development Invenergy Solar Development Business One South Wacker, Suite 1800 Chicago Illinois 60606 work Business Phone: 312-429-2528work Website: Invenergy Related by Category R Energy 618-382-7313work Geo. N. Mitchell Drlg. Co., Inc. 618-382-2343work [email protected]INTERNET Illinois Petroleum Resources Board Eastern Services 618-382-3511work Dillman Services Inc 618-382-4720work United Energy 618-382-2280work Campbell Energy 618-382-3939work [email protected]INTERNET