Key Performance Indicators

Transcription

1 Key Performance Indicators Identifying Design, Operation, and Tenant Feedback for Building Energy Performance Dan Harris, NBI

2 Thanks Cathy Higgins et al.- NBI David Weightman - California Energy Commission PIER Contract Manager CAMP Advisors Wes Sullens - Stop Waste.org Lia Webster et al.- PECI Integral Group, Ecotope, Northwrite

3 Evidence-Based Design PIER Project Sensitivity Analysis First View and Remote Analysis 22 Site Visits CAMP Advisors System Level Analysis Projects

4 Key Performance Indicators (KPI) Briefing Overview Context of KPI Work NBI s KPI approach KPIs Oakland Office Market and Program Intersections

5 CONTEXT

6 Different Players Affect Building Performance Tenants Computers and Equipment Schedule Habits Staffing Controls Maintenance Commissioning Operation Design Layout Integration Installation Components and Features

7 Net Zero Buildings

8 Whole Building Annual Indicators

9

10 DESIGNER One-Time/ Annual OPERATOR Regular TENANTS Frequent

11 Codes are Moving to More Detail ASHRAE 90.1 in Monitoring IECC IgCC Title 24 No Requirements Whole Building System Specific Equipment

12 KPI Approach Shorthand metrics that reveal how things are doing in complex systems or organizations or building energy use. Topic 1 Building Characteristics Metrics of Meter Data KPIs are most commonly defined in a way that is understandable, meaningful, and measurable. and consistent!

13 KPI Approach Metrics and Characteristics Aiding Comparisons Metrics Comparisons Characteristics EUI Avg. kw/ton Average plug load power density per SF on weekdays Lighting off hours Ratio Model Like-type Building or System Historical Data Proxy Size Shape Use type # of people on the day shift HVAC type Ventilation Type Data Center? etc.

14 KPI Approach Answer business questions! Designer: What part of my design did not save energy? Was is just the tenants? Operator/Owner: My building got a portfolio manager score of 67. What now? Tenant: Is my company s office space energy efficient? Specifications

15 KPI Building Levels

16 KPI Building Levels

17 All Buildings Some Buildings New Construction and Deep RCx KPIs I Programmatic Requirements I II I II III Detailed Findings EMIS and Additional Meters BUILDING LEVEL

18 KPI Audiences and Needs

19 NBI KPI Website

20 Oakland Office Example

21 NBI Building Characteristics

22 Building Characteristics Portfolio Manager NBI Additional Characteristics Characteristic Use-Type Oakland Office Zip Code GSF 14,000 Conditioned % 100 Weekly Operating Hours Number of Workers on the Day Shift Number of Personal Computers

23 LEVEL 0 Data and KPIs

24 Designer: How did the building do? zepi

25 Designer/Operator: My score was what? Where are the big areas of concern? KPI VALUE

26 LEVEL I Data and KPI

27 Designer/Operator: What schedule did the building have? 11 hours

28 Retroficiency FirstFuel SCIenergy SENSEI Pulse Noesis Wegowise SRS Compass Energy Ai FirstView LEVEL I EMIS Options Classification MEM EIS EAD Type Web-Based Local Remote Free Offerings? Weather Normalization Other Normalization Diagnostics Real-Time Threshold Alerts End Use Disaggregation EnergyStar Integration Event Tracking Portfolio Assessment Target Market Commercial Industrial Residential/Multi-Family

29 LEVEL II Data Requirements

30 LEVEL II - KPI

31 Designer or Operator: What schedule did the tenants have? 9 hours

32 Designer/Operator: Were the tenants big energy users? High NBI Benchmark Data

33 Designer: Did Occupancy Change in the Year? Moderately Stable

34 Designer: Were my plug load assumptions correct?

35 LEVEL III Data Requirements

36 Designer: What system influenced the EUI and was it schedule driven? [HART et al 2004] Hart, R., Mangan, S., Price, W., Who Left the Lights on? Typical Load Profiles in the 21st Century. Proceedings of the 2004 ACEEE Summer Study on Energy Efficiency in Buildings.

37 Designer/Operator: Does the lighting system respond to daylight? Excellent

38 Tenant: How does my (our) usage and what impact are my actions having? Tenant Feedback Month 1 Month 2 Month 3 Month 4 Month 5 Month 6 Month 7 Occupied Power Density Peak Power Density Off Hours Ratio 64% 64% 64% 65% 66% 69% 71% Weekend Ratio 71% 71% 70% 71% 75% 74% 73% kwh/sf/yr ASSESSMENT HIGH HIGH HIGH HIGH HIGH HIGH MEDIAN

39 Level III Designer KPIs KPI Oakland Vancouver Whole Building Schedule 11 hrs./day 8 hrs./day Tenant Schedule 9 hrs./day 7 hrs./day Tenant Stability Moderately Stable Stable Tenant Usage High Very Low Design and Operations vs. Tenants Median Very High Daylight Effectiveness Excellent Poor Overall Lighting Performance Median Median Plug Load Design Equivalence n/a n/a Lighting Design Equivalence n/a n/a HVAC and Net Electric Baseload 0.28 W/SF 0.08 W/SF Operational Consistency Erratic Stable

40 KPI Technical Notes KPI approach has potential for expanding and transferring knowledge Lots of coordination required Existing buildings will be tough: Level II: Tenant plug load system Systems must likely change with building types

41 Market Intersection Notes Owner and design guidance Specifications; Sensitivity Analysis Design and retrofit program requirements Leverage opportunities for knowledge: Additional building characteristics Standard KPIs of available metered data Water, CO 2 important

42 Key Performance Indicators Thank you Dan Harris, NBI