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ENERGY MONITORINGENERGY MONITORING

&&

TARGETING SYSTEMSTARGETING SYSTEMS

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you cant manage what you dont measureyou cant manage what you dont measure

principleprinciple for monitoring helps.for monitoring helps.

You cant achieve what you dont target isYou cant achieve what you dont target is

also applicablealso applicable

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DataData

ResultResult

InformationInformation

Analyze

Action

Measure

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DEFINITION OF Energy M &TDEFINITION OF Energy M &T

A technique that uses energyA technique that uses energy

informationinformation asas aa basisbasis toto eliminateeliminate waste,waste, reducereduce

costs,costs,

andand controlcontrol currentcurrent levellevel ofof energyenergy useuse..jj ByBy monitoringmonitoring:: EstablishEstablish thethe existingexisting patternpattern ofof

energyenergy consumedconsumed

jj ByBy TargetingTargeting:: IdentifyIdentify operableoperable energyenergy

consumptionconsumption levellevel (which(which isis desirabledesirable asas aa

managementmanagement goalgoal toto workwork towardstowards energyenergy

conservation)conservation)

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MonitoringMonitoring // targetingtargeting isis aa managementmanagement techniquetechnique inin

whichwhich allall plant/buildingplant/building utilitiesutilities suchsuch asas fuel,fuel, steam,steam,

electricity,electricity, refrigeration,refrigeration, compressedcompressed--air,air, water,water, effluenteffluentareare managedmanaged asas controllablecontrollable resourcesresources (similalrly(similalrly toto thatthat

ofof RawRaw Materials,Materials, finishedfinished product,product, Manpower)Manpower)

M&TM&T forfor energyenergy involvesinvolves

D

ivisionD

ivision ofof areasareas asas costcost centerscenters MonitorMonitor utilitiesutilities usedused inin eacheach areaarea

CompareCompare energyenergy usedused withwith productionproduction volume/novolume/no../etc/etc..

occupancyoccupancy oror productproduct salessales..

SetSet targetstargets ,, observeobserve variancesvariances && initiateinitiate remedialremedialactionsactions..

TypicalTypical M&TM&T programsprograms havehave beenbeen usedused asas effectiveeffective tooltool toto

demonstratedemonstrate thethe resultsresults ofof 55--2020%% savingssavings realisedrealised..

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ELEMENTS OF M & T SystemELEMENTS OF M & T System

RecordingRecording MeasuringMeasuring andand recordingrecording

AnalysingAnalysing CorrelatingCorrelating toto outputoutput (Production(Production NosNos.. oror quantity)quantity)

ComparingComparing ComparingComparing toto standardstandard benchmarkbenchmark

SettingSetting TargetsTargetstoto reducereduce oror controlcontrol consumptionconsumption

MonitoringMonitoring--ComparingComparing withwith setset targetstargets atat regularregular intervalsintervals

ReportingReporting-- ReportingReporting resultsresults includingincluding variancesvariances fromfrom targettarget

ControllingControlling--ImplementingImplementing managementmanagement measuresmeasures

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Typical details of M & T activityTypical details of M & T activity

CheckingChecking energyenergy invoicesinvoices

EnergyEnergy AccountingAccounting

DeterminingDetermining energyenergy performance/efficiencyperformance/efficiency

RecordingRecording --OfOf projectsprojects intendedintended toto improveimprove

energyenergy efficiencyefficiency

HighlightingHighlighting -- performanceperformance problemsproblems oror successsuccess

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Data and Information AnalysisData and Information Analysis

from electricity & Fuel billsfrom electricity & Fuel bills

A typical format for monitoring plant level informationMonthMonth Fuel1Fuel1 Fuel2Fuel2 Fuel3Fuel3 TotalTotal

Rs.lakhRs.lakh

DayDay

kWhkWh

NightNight

kWhkWh

MDMD TotalTotal

Rs.lakhRs.lakh

TotalTotal

energyenergy

billbill

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Typical representation of energyTypical representation of energy

billsbills% Share of total energy cost

rnace oil

8

G

9

D

lectricity

4

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Table 8.2: Fuel Conversion Data

Energy source Supply unit Conversion Factor to Kcal

Electricity kWh 860

HSD kg 10,500Furnace Oil kg 10,200

LPG kg 12,000

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% Share of fuels based on% Share of fuels based on

consumptionconsumption--In kcalsIn kcalsEenr - Mill n k l

T tal

lectricit

%S

%

7%urnace oil

%

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Relating energy consumption &Relating energy consumption &

productionproduction-- raphing theD

ataraphing theD

ata What drives energy consumption?What drives energy consumption?

Production (or)Production (or)

Hours (or)Hours (or)

WeatherWeather Collect energy consumption, energy cost andCollect energy consumption, energy cost and

production dataproduction data

Study and analyse the data to understand whatStudy and analyse the data to understand what

is happening.is happening. raphs generally provide an effective means ofraphs generally provide an effective means of

producing energy & production relationshipsproducing energy & production relationships

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Use ofBar ChartUse ofBar Chart

Collect 2Collect 2 --months data and collate for 12months data and collate for 12months of energy billsmonths of energy bills

Most common aspect is to show energyMost common aspect is to show energy

per month for this year and last yearper month for this year and last yearWe need production data for the sameWe need production data for the same

2 /12 month period2 /12 month period

Moving nnu l tot lMoving nnu l tot l--W

ith >12 MonthsW

ith >12 Monthsd td t

Sum of the previous twelve months ofSum of the previous twelve months of

datadata

Covers full ran e of the seasonsCovers full ran e of the seasons

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EnergyEnergy--Current year and previous yearCurrent year and previous year

Energy-Current year and previous year

Jan e ar pr ay Jun Ju ug ep t ov eMonth

lakh,k

Wh

En-Consn En-Consn

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Moving annual Total for productionMoving annual Total for production

& energy consumption& energy consumptionMoving annual total of Energy and production

6

an

e

M ar

p r M ay

un

u l

ug

ep

c t

ov

e c

M o n t h s

Production

roduction

nergy

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SEC Vs ProductionSEC Vs Production

Specific Eenrgy Consumption vs. Production

n r uS

on r u

So

Month

SEC

Production-MillinoMTProduction SEC

o SE

i SEC

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Specific energySpecific energy

consumption(SEC)consumption(SEC)SEC chart alone will not give plant detailsSEC chart alone will not give plant details

A plot of production vs. SEC can reflectA plot of production vs. SEC can reflect

actual scenario of energy efficiency.actual scenario of energy efficiency.Higher the productionHigher the production----SEC is low.SEC is low.

Low production levelLow production level----SEC is high.SEC is high.

This indicates that there might be fixedThis indicates that there might be fixedenergy consumption.For moreenergy consumption.For more

understanding of performanceunderstanding of performance

measurement an XY chart is plottedmeasurement an XY chart is plotted

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From Energy Mangers DeskFrom Energy Mangers Desk--

Dear Plant Managers,Dear Plant Managers,

Thank youThank you for all the statisticsfor all the statistics

and energy reportsand energy reports