We at RetroGreen Energy are proud to serve Minnesota by enhancing home and building performance through superior insulation. As specialists in energy efficiency and indoor comfort, we work with residential, multi-family, agricultural, industrial, and commercial clients to address high utility costs, air quality concerns, and structural issues caused by poor insulation.
Our RetroFoam wall insulation offers unparalleled benefits by filling enclosed cavities effectively, without invasive demolition or expansion damage. Installed externally, it is safe, fire-resistant, biodegradable, and hypoallergenic, making it ideal for families. In attics, we employ advanced air sealing followed by cellulose insulation, delivering maximum energy efficiency and comfort. We use environmentally friendly spray foam technology for a safe, durable result. Our goal is to ensure your property remains efficient, healthy, and comfortable in every season.
- Licensed
- Insured
- BPI-certified energy audits in St. Cloud area
- Comprehensive blower door air leakage testing
- Infrared thermography reveals hidden heat loss
- Room-by-room outdoor connection pressure analysis
- Customized testing packages with detailed reports
- Proven results backed by client testimonials
- Cash
- Debit cards
- Credit cards




Good work fellas!
From the moment Retrogreen took my first phone call, the stress was gone. The crew was great, my house is finally cozy.
From their general expertise, to the excellent customer service and fantastic work, I cannot recommend this company enough.
The consultation and installation process went very smoothly. The company took care of the available rebate paperwork which was great
The crew completing the installation was very professional and communicated well with me throughout the day. It took just over half a day to complete the work from arrival to completed cleanup. We have cedar shakes as siding, and after the installation, we could hardly tell the work had been done.
Having an older home, things were not as they should have been. Lack of insulation as well as lack of venting in the attic caused many issues. Having very little insulation in the walls as well, made for a cold house in the winter and hot in the summer!! The furnace and fireplace seemed to never shut off and the AC was the same!!
I highly recommend them as they are very easy to work with and the guys that do the work are very professional. Any question I had, they answered without any hesitation. They know their stuff!!
We are excited to see our propane bill be lower this year!!
Communication on what the job entailed and when it was to begin was well communicated before install day.