HEI utilizes energy analysis software to perform an overall energy model of a building, identifying cost–effective measures for heating, cooling, ventilating, water usage and other energy flows. The software also identifies the most energy–saving measures for buildings and calculates energy performance and life–cycle cost of operation. This software utilizes local weather data for a specific geographic region, so HEI is able to perform energy modeling services for not only the Minneapolis/St. Paul area, but anywhere nationwide.

Energy Modeling can be performed at different levels of the design and construction process and for different purposes. HEI offers the following Energy Modeling services:

A. Conceptual Energy Modeling
Pre–Design/Schematic Design Phases
This level of energy modeling provides building owners with suggestions and options for various features for their building during the early design phases of the project. Building features that are modeled include building envelope, building orientation, insulation, daylighting, glazing, HVAC systems, etc. The end result is a simplified model of a theoretical building which the owner can use as a tool when making design decisions. The owner may use this tool when pursuing a certain Energy Use Intensity/Index (EUI) or ENERGY STAR® labeling, or in order to meet local or state energy–use requirements. An owner may also use Conceptual Energy Modeling to decide which LEED® points to pursue.

B. Adaptation Energy Modeling
Design Development/Construction Documents Phases
Once design decisions are made (like those features modeled in the Conceptual Energy Modeling process), the energy model is updated with the specifics of each option in order to provide a detailed simulation or room–by–room analysis of the building. The more detailed the information input into the energy model, the more accurate the output. If HEI has not performed Conceptual Energy Modeling, the design details will be reviewed with the client. Adaptation Energy Modeling can also be performed to satisfy the energy modeling requirements if pursuing LEED® Energy & Atmosphere Credit 1 points.

C. Model Verification
Post–Construction Phase
This modeling is performed after the building has been placed in service. The results from an Adaptation Energy Model are compared to the actual energy usage of the completed building to identify discrepancies. If the actual building is not performing as well as the theoretical model, an investigation is performed to identify the cause (i.e. a system not installed correctly, controls not programmed per the design, etc.). Model Verification can also be performed in order to earn the LEED® Measurement & Verification point. HEI also offers services to satisfy the requirements for the Commercial Building Federal Tax Deduction (IRS Notice 2008–40).

The above energy modeling services can be performed individually, paired or all three combined as one Comprehensive Energy Modeling Package. Please contact us for a quote.