The Energy Experts for Builders in Texas
Your Trusted Energy Testing Partner in Texas
At Lone Star Energy Efficiency, we help builders, developers, and homeowners meet energy codes. Backed by over a decade of experience, we provide reliable testing, clear communication, and tailored energy efficiency support for your project's success.
Built on purpose. Driven by precision.
With 15+ years of hands-on experience in the energy efficiency space, Lone Star was founded in 2021 to bring builders the reliable, responsive service they were missing. We approach every project with the same level of focus and respect- because your timelines, budgets, and outcomes matter.
From blower door testing and duct leakage testing to Building Enclosure Commissioning, our team delivers hands-on support with deep technical knowledge and a personal touch.
We partner with Texas builders and developers to meet today’s energy codes and prepare for tomorrow’s performance standards. From single-family, to large multifamily and commercial projects, we simplify the path to building smarter, more efficient, and energy smart spaces projects.
Meet Our Team
Brittany Paul
President & CoFounder
Brittany Paul is the CoFounder and President of Lone Star Energy Efficiency, where she oversees operations, business development, and energy code compliance across residential, multifamily and commercial projects throughout Texas. With a strong focus on system development, client experience, and regulatory alignment, Brittany brings a dynamic blend of leadership, operational insight, and industry knowledge to every project. She also holds the Construction Document Technologist (CDT) certification, reflecting her commitment to ongoing professional excellence.
Before founding Lone Star, Brittany built and led a successful brand photography business and held instructional leadership roles within public education. Her diverse background has sharpened her ability to lead teams, manage complex projects, and build trusted relationships. Whether collaborating with builders or guiding strategic growth initiatives, Brittany is known for her clarity, drive, and dedication to helping others succeed.
Clay Paul
Lead Rater, Operations Director & Building Enclosure Commissioning Authority
Clay Paul is an experienced leader in the energy efficiency industry with over a decade of work in building performance testing, program management, and residential energy compliance. As Lead Rater and Operations Director at Lone Star Energy Efficiency, he oversees quality assurance, field operations, and code compliance for single-family, multifamily and commercial projects across Texas. Clay is known for his technical precision, deep understanding of building science, and commitment to delivering reliable, code-compliant results.
Prior to joining Lone Star, Clay directed residential energy programs for a major municipal utility, led field operations across multiple service areas, and conducted diagnostic testing for Department of Energy weatherization initiatives. He holds advanced credentials including BPI Building Analyst (ID# 5057719), RESNET HERS Rater (Rater# 7567340), an Air Barrier Inspector Certification from ABAA, an EIFS Inspector certification from AWIS, and is a credentialed commissioning authority (CxA+BE, BECxP). Dedicated to raising industry standards and mentoring others in the field, Clay continues to invest in ongoing training and actively contributes to the advancement of energy-efficient building practices.
Real-World Experience You Can Rely On
Our team has audited over 1,200 single-family homes and more than 3,000 multifamily units across Texas. We’ve worked alongside eight government agencies, managed efficiency programs for major utilities, and trained under the Department of Energy. We understand the challenges you face- and we know how to help you succeed.
Real-World Experience You Can Rely On
Our team has audited over 1,200 single-family homes and more than 3,000 multifamily units across Texas. We’ve worked alongside eight government agencies, managed efficiency programs for major utilities, and trained under the Department of Energy. We understand the challenges you face- and we know how to help you succeed.
What It's Like to Work With Us
With over a decade of experience, we guide builders, developers, and homeowners through a clear, streamlined process to meet energy codes and save money—so you can build confidently from start to finish.
Project Portfolio
Looking for a place where your work makes a difference? At Lone Star, we believe in building an energy efficient Texas- and supporting each other along the way. If you’re passionate about energy efficiency and great service, we’d love to hear from you.