Integrated Efficiency Solutions (IES) combines the strengths of multiple market leaders in the energy & water efficiency solutions space to better serve our local and national customers.

The IES team has unsurpassed geographic reach and a deep bench of talented team members ranging from engineers and landscape designers through operations leaders and measurement and verification experts.

The team includes the most experienced leaders in the industry; LRI, RTS & Enlight have completed thousands of projects since the early 1990’s.

Our goal is to provide the most robust solutions offering of any service provider in the ESPC & UESC market. This merger will give our customers benefits through far greater purchasing power, leveraging team members geographically closer to projects, operational options for insourced professionals and proven teaming partners with substantially larger financial & bonding capabilities.

This merger brings together the market leaders in both federal & MUSH (municipalities, universities, schools, and hospitals) to better serve our diverse client base. Each company is a wholly owned subsidiary of IES, and as a team we strive to bring far greater value to our ESCO and utility clients:

Design Build Services

  • Lighting & lighting controls
  • Water efficiency (advanced)
  • Utility metering (AMI/AMR)
  • Building envelope
  • And more, all from one source...

In House Capabilities

  • Engineering savings analysis
  • Advanced water treatment
  • Energy and water use studies (EISA)
  • Project designs with living as built and savings models for easy adjustment during final design/negotiations
  • Measurement and verification (M&V)
  • Remote monitoring
  • Quality control (QA/QC)
  • Safety (OSHA & EM 385)
  • Operations & maintenance services
Lighting Efficiency
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Lighting Efficiency • Water Efficiency • Utility Metering • Building Envelope Solutions


Click through to each company above or contact IES directly at 800-929-5834 or admin@lr-inc.com.