Contact Us

Contact Us
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For 24-hour EMERGENCY service (e.g., gas leak, nearly out or out of gas), please contact us at 1-800-236-3276. 

For non-emergency energy inquiries, please email energyinfo@landmark.coop

Fax employment verifications to 608-492-0421. 

Email: info@landmark.coop
Phone: 608-251-9010 or 800-236-3276
Fax: 608-839-5144

Corporate Office Address:
1401 Landmark Drive
Cottage Grove, WI 53527
8:00am – 4:30pm Mon-Fr