Please note, Slipstream EFS’s address in Madison has changed to 431 Catalyst Way, Madison, WI 53719. We have not moved, but a new city street has been dedicated adjacent to our property. Mail sent using our old address or PO Box will be forwarded to us for a short time, however, to ensure timely processing of your applications please utilize our new address only.
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For Homeowners

Make your home more comfortable—plus cut energy costs and improve your resale value—with an energy-efficiency upgrade. Now more affordable with financing through EFS.

For Businesses

For Businesses

Looking for ways to improve building comfort and boost your bottom line? Install an energy-efficiency or renewable energy upgrade with affordable financing through EFS.


For Contractors

Your customers know energy-efficiency and renewable energy updates mean increased comfort and big savings. Turn that interest into business with an EFS financing program.