Technology I

Technology I

Sub-Metering 101

Proprietary Information Of Energy 2013

Submetering 101

What Federal Facility Managers Need To Know

Presented bySteve Kearney – E-Mon


Metering vs. SubmeteringMetering vs. Submetering

• What is submetering? – Defined as a metering device installed after the main

utility meterUsed for capturing facility energy data at a specific

location, panel, circuit or user.– Delivers granularity of facility energy performance data

Submeters –The critical component for accessing facility energy related data


Overview: Electro-Mechanical MeterOverview: Electro-Mechanical Meter

• The Electro-Mechanical Meters– Typical Utility type Meter

– Available in various amperages

– Power passes through meter, then to distribution panel

– Requires substantial physical space for installation

• One meter per building– Restricted ability to sell multiple meters per

customer site


Overview: Sensor-Based SubmetersOverview: Sensor-Based Submeters• Non-Socket, Current Sensor Based Technology– Limited or no Power interruption

– Lower installed cost No CT CabinetsNo Meter SocketReduced cabling and conduit

– 1/10 the time to install

– Space saving and flexibility in location• Multiple submeters per location increases revenue stream


BENEFITS OF SUBMETERINGBENEFITS OF SUBMETERING..

• Accurate energy monitoring.• Ease and flexibility of installation.• Concise energy management tool.• Promotes energy savings.• Positive environmental impact.• Automatic Meter Reading capable.• Provides T.O.U. graphs and charts.


ACCURATE ENERGY MONITORINGACCURATE ENERGY MONITORING

Electronic submetering equipment meets or exceeds *ANSI C12 national accuracy standards.

*American National Standards Institute

•


EASE AND FLEXIBILITY OF EASE AND FLEXIBILITY OF INSTALLATIONINSTALLATION

• Metering installs in practically any available space.• Any size circuit from main distribution to a single 15

amp branch can be monitored..• No changes to building wiring required..• Using split-core current sensors will allow installation

without disconnecting cables.


Energy ManagementEnergy Management

• Submetering easily ties into Building/Energy management equipment.

• Detailed energy data gives system maximum control over energy usage, etc.

• Remote monitoring by Automatic Meter Reading system acts as “watchdog” to keep an eye on performance

• Maximum control = Maximum savings


PROMOTES ENERGY SAVINGSPROMOTES ENERGY SAVINGS

(Benchmarking) Accurate knowledge of where energy is being consumed is the first step in creating a savings program.

(Continuous Commissioning) Constant monitoring allows the user to gauge the results of an energy savings program.


Positive Environmental ImpactPositive Environmental Impact

• Better efficiency delays need for new generating facilities. (costs stay lower)

• Lower pollution provides environmentally friendly image..

Each kilowatt-hour of electrical energy saved reduces pollution by:

1.37 lbs. carbon dioxide (CO2) 5.8 grams sulphur dioxide (SO2)

2.5 grams nitrous oxides (NOx)


AUTOMATIC METER READING

• Allows reading of meters at any time, day or night.• Allows meter reading in all weather conditions.• Allows reading of meters anywhere in the world

from your computer.


PROVIDES “TIME-OF-USE” GRAPHS AND CHARTSPROVIDES “TIME-OF-USE” GRAPHS AND CHARTS

• Data for “real-time” pricing of energy.

• Data for event analysis.• Data for Demand Side

Management programs.• Data for energy

program planning and performance analysis.


1

2

3

Electronic kWh Meter Installation

1. Mount meter at desired location

2. Connect voltage inputs – fuse/provide disconnect according to code

3. Install split-core current sensors

4. Power up meter


EPACT 2005 Overview

• Energy Policy Act of 2005• Signed into law by Pres. Bush 8/05• Extended to 12/31/13

• May be extended further

• Key Provisions– Required all Federal buildings to be metered or submetered

– Federal building energy-efficiency standards

– Tax deduction for energy-efficient buildings


• 500,000+ Federal buildings

• Section 102 - Sets efficiency goals for existing buildings to increase 2% per year to 20% by 2015

• Section 105 - Extends energy savings performance program to 2016

• Section 109 - New buildings must comply with ASHRAE 90.1 – 2004• Goal of 30% below 2004 standards• Apply sustainable design principles

Federal Buildings Efficiency


Leadership in Energy & Environmental Design:

• Sustainable Sites• Water Efficiency• Energy & Atmosphere• Material & Resource • Indoor Environmental Quality• Innovation & Design Process

LEED Certification Levels:

• Certified• Silver• Gold• Platinum

The LEED Rating System


Metering Credits

• Measurement & Verification – EA Credit 5– use meters for base building, tenant submetering and energy system

performance

• Building Operations & Maintenance – EA Credit 3.3– use meters and software system to educate staff, continuously track

performance and optimize systems

• Performance Measurement – EA Credit 5.1 - 5.3– enhanced metering-use electric, water and gas meters and software system

for ongoing accountability and optimization of building energy performance over time


Metering Credits (2)

• Documenting Sustainable Building Cost – EA Credit 6

– Use Submetering Software to document overall build operating costs to identify any positive impacts relative to sustainable performance improvements

• Optimize Energy Performance – EA Credit 1

– Verify that energy efficiency equipment and system are operating at peak performance and as specified in the building design

• Energy Use, Measurement & Payment Accountability – EA Credit 3

– Provide for the ongoing accountability and optimization of tenant energy and water consumption including submetering equipment to measure and record energy uses within the tenant space

– Negotiate a lease where energy costs are paid by the tenant and not included in the base rent


Hawthorne EffectMandalay Condos

Yearly usage in millions of kWh.

Submetering added in July of 1995.

Changes due to tenant awareness.

450,000 kWh saved. 675,000 lb. less CO2 in

atmosphere. 3.9

4

4.1

4.2

4.3

4.4

4.5

4.6

4.7

'92 '93 '94 '95

kWh

Yearly Consumption X 1,000,000


Changes made after submetering analysis.

Demand reduction: 720 kWEnergy Savings: 4,862,000 kWh/yearPollution Savings: 6,660,940 lbs. CO2

62,168 lbs. SO2

26,797 lbs. NOxCost Savings: $343,000

ProactiveProactiveVirginia PowerVirginia Power

Corporate Hq. & Innsbrook Tech. Ctr.


Pollution SavedPollution Saved

CO2 REDUCTION AT VIRGINIA POWER IS ENOUGH TO FILL A TRAIN OF BOXCARS ALMOST 110 MILES LONG -- BY VOLUME. (13,527 BOXCARS)

CO2 REDUCTION AT VIRGINIA POWER IS ENOUGH TO FILL A TRAIN OF BOXCARS ALMOST 110 MILES LONG -- BY VOLUME. (13,527 BOXCARS)


L.A. Air Force Base

• Identify energy saving opportunities

• Verification of savings• Energy budgeting• Comply with energy

reduction mandates


L.A. Air Force Base Hardware

• Over 50 submeters• 21 interval data

accumulators• Energy intelligence

software• Est. Cost $50k• Used to verify over $1

million in savings• Won FEMP award for

savings


SustainabilitySustainabilitySustainabilitySustainability

The practice of creating and using more resource efficient models of construction, renovation, operation, maintenance, and demolition.


Three Major Components ofThree Major Components of Energy UsageEnergy Usage

1.) HVAC2.) Lighting3.) Receptacle Loads


RED= HVACBLUE= LightingGreen= Receptacle

Three Major Components BreakdownThree Major Components Breakdown


For more information visit our booth at the Energy 2013 show or visit www.emon.com

Technology I

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