Design Tools
Sponsored by Idaho Power
In our work we often find recurring time barriers to achieving energy savings in buildings. Sometimes we are successful in securing funding to create tools that will help to remove these barriers. The energy efficiency design tools available here provide design teams with information to support improved decision making in early design stages.
As of June 2026 if a link to a design tool does not work it has not been posted yet or is currently under maintenance and will be available soon.
Disclaimer
While the calculations presented in this tool have been reviewed for technical accuracy and are believed to be reasonably accurate, the findings are estimates and actual results may vary. As a result, University of Idaho, Integrated Design Lab is not liable if projected estimated savings or economics are not actually achieved. All savings and cost estimates in the report are for informational purposes, and are not to be construed as design documents or as guarantees.
The user shall independently evaluate any advice or direction provided in this tool. In no event will University of Idaho, Integrated Design Lab be liable for the failure of the customer to achieve a specified amount of energy savings, the operation of customer's facilities, or any incidental or consequential damages of any kind in connection with this report or the installation of recommended measures.
2012 CBECS Data Visualization Infographics
UI-IDL Climate Design Resources - 1st & 2nd Generation Tool sets
Daylight Pattern Guide
The Climate Responsive Design Web Tool
Infiltration Equations & Conversions
A key factor in building heat gain and loss may be the infiltration rate, or the rate at which outdoor air is exchanged with conditioned interior air through the envelope. This spreadsheet tool outlines a set of simplified equations aimed at converting typical, real world infiltration measurements into metrics that can be input into EnergyPlus.
EnergyPlus Fan Energy Calculator
This spreadsheet was created in order to aid with determining the fan inputs into EnergyPlus via equations from ASHRARE 90.1 Appendix G (for baseline systems) and fan specifications (for proposed systems).
Construction Insulation Value Calculator
Build a wall, roof, or floor one layer at a time and watch its R-value, U-factor, and whole-wall thermal performance update as you go — then export the assembly straight to EnergyPlus. A schematic-design tool for studying envelope choices before detailed simulation.
Weather Normalization
This spread sheet was created in order to aid with the processing and analysis of building energy usage. In order to operate this spread sheet you will need the following bills for each month in the period you wish to analyze
Thermal Energy Savings Tabulator (TEST)
This tool aims to provide designers, engineers, and manufacturers a quick and easy way to calculate energy savings from the application of different heat pump HVAC technologies early in the design process.
Cost and Efficiency of IAQ Devices
LM-83-12 Three-phase Daylight Simulation Script
Idaho Power Company Meter Analysis Template
This spreadsheet is designed to handle meter data provided in the Idaho Power format. IPC provides hourly kW data in a table where each row is a day and each column is an hour.
2018 CBECS Data Visualization Infographics
MIT - Sustainable Design Lab
2018 CBECS Micro Master
LBNL - Building Performance Database
SBW - Energy Charting & Metrics (ECAM)
2018 CBECS Education Data Visualization Infographics
2018 CBECS Additional Data Visualization Infographics
High-Efficiency Lighting & IECC Optimization (HELIOS)
HELIOS — High-Efficiency Lighting & IECC Optimization System. A guided sequence of design-phase tools — from establishing the lighting power allowance through daylight zones, the fenestration envelope, and the final interior and exterior compliance checks. for IECC 2018 C405.
Climate-Oriented Design Explorer (CODEX)
This suite recovers the graphic climate-analysis methods from Sun, Wind & Light: Architectural Design Strategies (Brown & DeKay, 3rd ed.) and rebuilds them as fast, self-contained web tools. These methods were never abandoned for lack of accuracy — they were abandoned because they were slow to draw by hand. Automating them returns them to the schematic phase, where they have the greatest design leverage.
School Optimization of Lighting, Incentives, & Savings (SOLIS)
SOLIS is a self-contained, field-to-report audit tool for K–12 lighting retrofits under Idaho Power’s Commercial incentive programs. Survey the existing system, model the LED retrofit, compare every incentive path, and generate the verification report — entirely in your browser, online or off.
Lighting, Useful-daylight & Multipliers Education Navigator (LUMEN)
LUMEN is a design-education resource for architects, engineers, and building professionals who want to move beyond simply putting glass in a wall. It focuses on the strategies that multiply the daylight already entering a building — orientation and sun-path analysis, window refinement, light shelves, clerestories, skylights, and shading — so spaces are lit more deeply, more evenly, and with less reliance on electric lighting.