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Would you buy or lease a car without knowing how many miles you get for each gallon of gas?  While many people consider this important information when buying a car, many businesses don't know the ENERGY STAR score of the buildings where they lease space.

Participants in the Lease for Efficiency Challenge simply commit to ask one powerful little question now and next time their company leases space in Denver:  What is the 1-100 ENERGY STAR score of the building?  Remember, 50 is the national average and a score above 75 qualifies for ENERGY STAR certification.  

Participating businesses receive recognition. Business that commit to innovation and take energy efficiency leasing steps will receive additional recognition. Participants can:

  • Save 2-14 cents per square foot in their Current Space
  • Save about 50 cents per square foot by Selecting an Energy Efficient Building
  • Save 15-60 cents per square foot by signing an Energy Efficient Lease and doing an Efficient Tenant Improvement

Thank you to these businesses for becoming savvy energy users and helping Denver do our part for the climate!  Together they lease nearly 2.5 million square feet in Denver.

Business Name




Alpine Bank


Alta Planning and Design

Planning and Design

American Pacific Mortgage

Real Estate/Finance

Anadarko Petroleum Corporation

Oil and Gas



Black and Veatch

Engineering & Construction

Brownstein Hyatt Farber Schrek LLP


car2go - Denver Office

Carsharing Services

Charles Schwab


Children's Hospital Colorado


CTA Architects Engineers


DLR Group


Emich Volkswagen


Environmental Technical Solutions

Environmental Consulting





Great Plains Moving and Storage

Distribution and Warehousing

Greenberg Traurig LLP


Guzman Energy



Engineering and Architecture

HUB International


Inflection Energy


Interstate Express Messenger Services

Courier Delivery

Janus Capital Group

Asset Managment



Kaplan Kirsch & Rockwell LLP


Leon Gallery

Art Gallery

M.E. Group

Architecture and Construction

Mercy Housing

Affordable Housing


Athletic Supplements

Otten Johnson Robinson Neff and Ragonetti PC

Law Firm

Overlay Consulting

Energy Efficiency

Parson Brinkerhoff

Engineering / Planning

Petros & White, LLC


Pilates Vita of Denver

Health and Wellness

PR Newswire



Real Estate

S.A. Miro Inc.

Consulting and Engineering

Stantec Consulting Services Inc

Consulting Engineering

Suncor Energy (USA) Inc.

Oil and Gas

The Refined Mind


Wells Fargo Bank


Xcel Energy


Zurich Insurance


Save 2-14 cents per square foot.  Make your own space energy efficient by lowering plug load, or any device that is plugged into a building’s electrical system—think computers, printers and data servers. 

Take a few easy steps right now:

·         Use the power management settings on computers and monitors.

·         Keep air vents clear of paper, files and office supplies.

·         Turn off power strips when not using equipment.

·         Turn off the lights when you leave.

·         Replace desk lamp lights with efficient bulbs.

·         Buy efficient computers, printers and servers with efficient equipment purchasing guidelines.

Download the following resources to develop a complete plan to reduce plug load:

·         Advanced Buildings: Plug Load Best Practices

·         GSA: Plug Load Reduction Checklist

·         NREL: Strategies for Controlling Plug Loads

Save 50 cents per square foot by asking the right questions when selecting a new space to lease:

  • What is the building’s 1-100 ENERGY STAR score? 
  • Does the landlord perform building commissioning or have in a place a quality control process to monitor and ensure efficient, consistent operations of base building systems?
  • What has the building owner done to improve and maintain energy efficiency?


Save 15-60 cents per square foot!

Sign an Energy Efficient Lease:  These leases promote energy efficiency by creating lease structures that equitably align the costs and benefits of efficiency investments between building owners and tenants. 

Sample lease language:

  • Submeter tenant energy usage: "Landlord shall install an electric meter/submeter to service the leased premises to measure the consumption of electricity in the leased premises. Tenant will pay for actual electricity used."
  • Pass-through clause: "Cost of any capital improvement to the building that reduces building operating costs, the costs of such improvemetns to be amortized over the minimum period acceptable for federal income tax purposes, and only the yearly amortized portion thereof shall be treated as building operation costs. In no event shall this charge for yearly amortization be more than the actual reduction in the building operation costs."
  • Efficient purchasing: "Landlord and tenant shall purchase highly energy efficient options when procuring fixtures, appliances and equipment when reasonably practical."
  • Fund tenant improvements related to energy efficiency. 

Learn more:

Do an efficient tenant improvement. Strategies for improving energy efficiency during the TI process include efficient lighting, design for increased use of daylight, reduced plug and process loads, and improved HVAC controls. Learn more:

Contact us for support with energy efficient leasing and tenant improvements. Or, if you’ve signed an energy efficient lease or have done an efficient tenant improvement project in the past, contact us for a possible case study feature at