To contact us:

Head Office (note new address)

Phone: (415) 233-9717 (EST / GMT-5)

Office Hours: 09:00 to 18:00 EST (GMT-5)

Email: Rafael<at>greensparkenergy.com

Midwest Regional Office

Tom Wieser P.E.

Vice President and Regional Manager

Suite 11-East
Evanston, IL 60201
Phone: (312) 451-6443 (CST) (GMT-6)

Email: Twieser<at>greensparkenergy.com