Using EMIS to Streamline RCx Projects. Lia Webster, P.E.

Transcription

1 Using EMIS to Streamline RCx Projects Lia Webster, P.E.

2 AIA Quality Assurance The Building Commissioning Association is a Registered Provider with The American Institute of Architects Continuing Education Systems (AIA/CES). Credit(s) earned on completion of this program will be reported to AIA/CES for AIA members. Certificates of the Completion for both AIA members and non-aia members are available upon request. This program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. 2

3 Learning Objectives At the end of this session participants will be able to: 1. Discuss the basic features in different types of EMIS systems. 2. Understand how EMIS systems can be used in EBCx projects 3. Discuss the key benefits and pitfalls of using EMIS tools in EBCx projects 4. Relate how EMIS tools fit with traditional utility sponsored EBCX programs 3

4 Presentation overview Overview and intent of pilot programs EMIS based RCx Process data-driven targeting remote assessment investigation implementation verification persistence monitoring Preliminary results Lessons learned 4

5 Utility Program Goals Identify highpotential sites Compel owners Improve program reach EMIS Low-Cost Remote Audits Remote identification of measures Monitor for persistence 5

6 Two Programs, three approaches Small Sites: Avg 75,000 sq ft Target Markets K-12 Schools Municipalities State / Commercial Savings Goals 6,000,000 kwh 90,000 therms Image: Google 6

7 Analytics Software Partners Schools Partner: Municipals Partner: State / Commercial Partners: Image: Agalis Image: Retroficiency 7

8 Analytics Process Data-Driven Targeting Remote Assessment Investigation Implementation Verification Persistence Monitoring 8

9 2014: State / Commercial 138,582 unique service points 287 Virtual Energy Assessments (VEAs) 22 buildings enrolled Copyright 2014 CLEAResult. All rights reserved. 9 investigations 5 Installed Lessons learned: Value of NAICS codes. Do not underestimate data issues. 9

10 Screening / Ranking Comparisons at a portfolio level very valuable Portfolio managers Ranking and potential for RCx & retrofit savings: Sites with high usage, high unoccupied usage and strong weather correlation Tools: FirstFuel Retroficiency R SAS Lesson learned: Analytics are very effective at screening for overall potential 10

11 Remote assessment Weather, occupancy, loads, end-use Indicates potential ID s opportunities Engages customers Images: Retroficiency Lesson learned: Analytic software are powerful engagement tools 11

12 Investigation Approaches CxA on-site Pre-site visit interviews Remote access to BAS Use of trusted controls contractor Funded by incentives Focus on identified measures Working directly with site staff Lesson learned: Analytics-identified ECMs beyond scheduling require on-site 12 investigation

13 Implementation & Verification Find and Fix Customer driven implementation Trade allies Customer self-install Limited on-site verification Savings based on: Deemed measures Engineering calculations Whole building data analysis Lesson learned: Implementation by owner difficult to 13 drive

14 Whole building verification Weekday Load Profiles Night base loads reduced from 50 kw to 25 kw Lesson learned: Use interval data to streamline the 14 calculation process

15 Whole Building Verification Image: Agalis Next slide 15

16 Whole building savings Weekend load profiles Weekday load profiles TMY Weather Data Annual Savings Images: Agalis Next slide 16

17 Persistence Monitoring Image: Pulse Energy Lesson learned: Persistence monitoring tools are powerful to an engaged owner 17

18 Results Schools / Municipal Gov ts 25 bundled projects installed Average bundled project involves 5 buildings 150,000 kwh Project cost < $10,000 Average building: 30,000 kwh savings 50,000 SQ FT Total buildings: ~ % savings from customer self-install 50% savings from trade ally 18

19 Results State and Commercial 9 projects, 72,500 square ft average Average savings: 227,000 kwh, 5,000 Therms Installation costs: $45,000 19

20 Previous Program Results California Savings per square foot Average savings for top 25% of projects: 3.41 kwh per sq.ft AERCx: 3.1 kwh per sq.ft 0.6 kwh per sq.ft Average 1.3 kwh per sq.ft Average savings for all projects: 1.46 kwh per sq.ft

21 Using data analytics - Lessons learned Value of NAISC codes different issues and approach for different sectors Do not underestimate data issues! Storage, downloads, cleaning, ownership Customer engagement is essential Analytics are very effective at screening Analytics are powerful engagement tools Focus on leveraging portfolios / similar buildings Supplement software vendor tools with in-house analytics, and sector expertise CxA boots on the ground results in deeper savings 21

22 Analytics in Utility Program - Lessons learned Do not underestimate data issues! Well labeled meters, square footage, contact info Allow for multiple project approaches Remote investigations + direct install Detailed on-site investigations Allow for whole-building verification Bundling of measures and incentives Allow for Find & Fix Detailed documentation and savings calculations reduce cost effectiveness Include retrofits to leverage customer engagement 22

23 Thank you! Lia Webster, P.E. Sr. Engineer CLEAResult Clearesult.com We change the way people use energy