What Makes Us Experts

With over 30 years in the energy efficiency industry, and over 15 local and national accreditations, 15 lightyears provides the knowledge and expertise to get your homes and building performing as they should.


Nearly all of our technicians, auditors, and managers have received one or more of the following nationally recognized accreditations.

  • Energy STAR Partner and Service Partner 

  • RESNET Home Energy Rater

  • Certified Energy Manager (CEM)

  • Certified Commissioning Authority (CxA)

  • BPI Home Energy Professional Energy Auditor

  • DOE Zero Energy Ready Home Advisor

  • LEED Accredited Professional (LEED AP)

  • LEED Green Associate (LEED GA)

  • Sustainability Professional Certificate

  • Green Globes Professional (GGP)

  • OUC Preferred Contractor

  • Duke Energy Approved Contractor

  • RESNET Approved Contractor

  • Orange County Public Schools (OCPS) Green Schools Program Advisor 

Certifying agents for:


  • Florida Water Star

  • Florida Green Building Coalition (FGBC)

  • NAHB National Green Building Standard (NGBS)