Certifications & affiliates Affiliates Our strategic partnerships allow for expert and efficient project execution. Hover over our partners to learn more. Nationwide certifications Our team holds a wealth of design, engineering and construction certifications. NAESCO Energy Efficiency Contractor (EEC) License F11 – National General Contracting (A) NABCEP Certification Certified Energy Manager Certified Measurement & Verification Professional ASHRAE Energy Auditing OSHA Compliant