University of Hawaii at Manoa Campus / Building Energy Use Initial Review Discussion January 6, 2014 Note: Hawaii Energy appreciates the offering of data and assistance from various sources at U.H., please note that this data has not all been verified for accuracy and this first review in this presentation is to be used for the demonstration of the analysis and review methods that could be implemented to manage Energy Use Jared Ganigan Michael Chang Joe Simpkins

Roadmap for Today Introduction and Overview Roadmap Introductions Goal of Review Roadmap Review of UH System Energy Use Data Campus Cooling Loops Review Buildings Energy Use / Weatherization Heavy vs. Low Use Lab Use Buildings EUI Usage History Reporting / Source Review Tell audience to keep in mind that two sets of data were used in order to capture the overall picture of the UH System and the individual buildings within UH Manoa HECO data from SQL and Individual meter readings provided through a zip file

UH Colleges Energy Use UH Manoa consumes 80% of the electrical usage by UH campuses it has the lowest per kWh blended cost.

UH Colleges Energy Use UH Manoa has the Highest Overall Energy Use Index (EUI) of all UH campuses.

Johnson Controls 2010 Report UH Colleges Energy Use Actual Usage 2014 EUIs can be used to predict potential for energy savings and verify performance. Top table has the same data as previous slide but cropped some things to emphasize the relationship between projected energy use to our analyzed energy use Johnson Controls 2010 Report

UH Colleges Load Factor Overall Demand Density of the campuses in aggregate are below average of Honolulu Office Buildings. Notice location of new West Oahu Campus renovated CC. EUIs for these sites too low. Data needs to be reviewed and corrected

UH Colleges Student Costs

UH Colleges Energy Cost Constructed by taking total amount billed in a year and divided by annual energy consumption NOT done by HECO rates.

UH Manoa Cooling Loops

Cooling Loop Buildings * Incomplete energy data

* Does not include buildings with incomplete data Cooling Loop Roles * Does not include buildings with incomplete data

UH Manoa Energy Use The black-tipped bars represent the buildings that are the source of a chilled water loop

UH Manoa Energy Use The black-tipped bars represent the buildings that are the source of a chilled water loop

UH Manoa Energy Use The black-tipped bars represent the buildings that are the source of a chilled water loop

UH Manoa Energy Use The black-tipped bars represent the buildings that are the source of a chilled water loop

Year to Year Variance Using EUI Spring & Fall 14 Increase Usage Appears to be from hotter days with similar 14-15 kWh/CDD relationship as the prior year

UH Manoa Lab Use Impact Benchmarking Analysis of 24 University Buildings in California [Mills and Matthew, 2009]

UH Manoa Colleges

UH Manoa Building Types * Higher Education Building Energy Benchmarking Study done in 2004

UH Manoa Energy Use Red boxes – new constructed buildings in respective years Yellow boxes – notable events Green boxes – UH Manoa Sustainability Efforts

UH Manoa Energy Use

Mahalo