Submetering: Evolution,
Technologies, Applications
© 2011 QLC
Outline

What is Electric Submetering?

What are Smart Meters?

Why Submeter?

What to Submeter?

Available Technology
What is submetering?
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
Why Not Direct Utility Metering?
Electric Usage

Construction Costs vs Meter Costs

Loss of Flexibility

No Integration of Non-Utility Energy (Generator, Solar,
Wind, etc)

Little Added Value to Tenants
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.
Reasons to Submeter:

Tenant billing:
Transfer Energy
Costs
Tenant Submetering:
Integrating renewables (vs direct
metering)
Reasons to Submeter:
Building Management:
Control of Building Systems,
Moment to Moment.
Reasons to Submeter:
Energy Management:
Understanding Trends Over Time.
Acting on Data to Reduce Energy
Use.
Energy Management:
Conservation programs
Energy management:
Load shedding, curtailment,
demand response
Submetering applications
AIRPORTS
RESIDENTIAL
COMMERCIAL
New construction | Gut rehab | Retrofit
MIXED USE
Available technology:
Individual meters
Available technology:
High density meters
Available Technology:
Communications


Wired

Proprietary

BMS interface (Modbus,
BACnet, LONworks, etc)

Ethernet
Wireless

Radio

WiFi

ZigBee

Power Line Carrier

Hybrid
Available technology:
Software

Proprietary

Controls / BMS / BAS

Third-party

Energy management
firms

Energy consultants

Reading and billing
firms
Comments
© 2011 QLC