1. © 2011 QLC Submetering: Evolution, Technologies, Applications

2. Outline  What is Electric Submetering?  What are Smart Meters?  Why Submeter?  What to Submeter?  Available Technology

3. What is submetering?

4. Submetering Alternatives  Master Metering  One utility meter for the entire building  Direct Utility Metering  The Utility Installs Meters and Manages Accounts for each Tenant  Building Owner Loads have a Separate Utility Meter and Account

5. Why Not Direct Utility Metering?  Construction Costs vs Meter Costs  Loss of Flexibility  No Integration of Non-Utility Energy (Generator, Solar, Wind, etc)  Little Added Value to Tenants

6. What are “Smart Meters?”  Tells You When Power is used, How Fast it is Consumed  Remote Access to Data  Most Smart Meters Provide Added Data that Details the Efficiency of the Particular Circuit. vs.

7. Reasons to Submeter:  Tenant billing: Transfer Energy Costs

8. Tenant Submetering: Integrating renewables (vs direct metering)

9. Reasons to Submeter: Building Management: Control of Building Systems, Moment to Moment.

10. Reasons to Submeter: Energy Management: Understanding Trends Over Time. Acting on Data to Reduce Energy Use.

11. Energy Management: Conservation programs

12. Energy management: Load shedding, curtailment, demand response

13. Submetering applications New construction | Gut rehab | Retrofit AIRPORTS RESIDENTIALCOMMERCIALMIXED USE

14. Available technology: Individual meters

15. Available technology: High density meters

16. Available Technology: Communications  Wired  Proprietary  BMS interface (Modbus, BACnet, LONworks, etc)  Ethernet  Wireless  Radio  WiFi  ZigBee  Power Line Carrier  Hybrid

17. Available technology: Software  Proprietary  Controls / BMS / BAS  Third-party  Energy management firms  Energy consultants  Reading and billing firms

18. © 2011 QLC Comments