Contact Mr. Solar®

If you need assistance selecting the right product or have questions, you are welcome to contact us using the form below.  Our friendly staff can offer you expert advice and assist you with whatever questions you might have.  If you prefer, we can also assist you by phone toll-free at 888.680.2427 during regular business hours in both the Eastern and Pacific Time Zones.

Corporate Address

mrsolar-logo-3.pngONLINE SOLAR, LLC
9600 Pulaski Park Dr. Ste 107
Middle River, MD, 21220

TEL: 888.680.2427
FAX: 410.528.9445


Business Hours (ET/PT)

  • Monday-Friday: 8am to 5pm
  • Saturday: Closed
  • Sunday: Closed

Who are we?

Online Solar, LLC and are a family-owned and operated business based in Baltimore, MD, USA, that provides solar and wind energy products to customers across North America.

  • A+ Rating at Better Business Bureau
  • Solar energy equipment experts
  • Project engineering available
  • Request Quote