epc: data collection and baseline creation. berliner energieagentur gmbh coordination berlin energy...

EPC: data collection and baseline creation

Berliner Energieagentur GmbH

Coordination Berlin Energy Agency

Französische Str. 23

D-10117 Berlin

Germany

Fon: +49 (30) 29 33 30 – 0

Fax: +49 (30) 29 33 30 – 99

[email protected]

Main Project Contact:Alexandra Waldmann

[email protected]

Project Website: http://www.eurocontract.net

Project Partners: Austria: Grazer Energy Agency,

Austrian Energy Agency

UK: MidWales Energy Agency,

Sweden: Swedish Energy Agency

Norway: Norwegian Energy Efficiency Inc.

Finland: Motiva Oy,

France: ADEME,

Italy: Regional Energy Agency of Liguria Italian Federation for the Rational Use of Energy

Greece: Centre for Renewable Energy Sources




Background:

Dipl.-Ing. Susanne Berger, Berliner Energieagentur GmbH

project management and monitoring of existing EPC,

focus Energiesparpartnerschaft Berlin

Outline:

1. introduction: step-by-step instructions 20 min

2. baseline-training 25 min

3. discussion 15 min

Material:

- presentation

- baseline data sheet


baseline year

fuel/heat consumption

electricityconsumption

waterconsumption

m³ water consumpt.

kWhelectr. consumpt.

kWhheat consumpt.

connectionpower

connectionpower


I. baseline overview

period X

invoices for energy and water

correction for baseline year

prices of baseline year

BASELINE

I.

II.

III. IV.



STEP I collection and list of invoices

collect all energy bills for each building with consumption in the baseline year

baseline year = last finished year with complete metering and billing

list meter by meter, building by building into one data sheet

note extra information (provider, metering number, factors, date of fitting, extra meters..)

compare to own meter readings of building management

DONT:

use of automatic estimations from energy invoices

list of extra meters for suppliers, that will not be affected by energy saving measures (example: caretakers flat, storage buildings, ...)

list of fuel amount ( litres of fuel oil, m³ of gas ) – instead use kWh (if necessary calculate by caloric values)



STEP II correction for baseline year

calculated in the data sheet

from bills counting time/consumption before/after baseline year, baseline consumption has to be excised

ELECTRICITY / WATER

consumption is corrected by number of days:

example:

kWh Baseline =

kWh bill x 60/100



STEP II correction for baseline year

HEAT

everydays consumption is not constant, but depending on outsides temperatures

consumption is corrected by median temperature of days

example:

kWh Baseline = kWh bill x ∑ (median temperatures) 60 days

/ ∑ (median temperatures) 100 days



STEP III prices correction

prices of the baseline year are reference prices for the hole EPC period

constant calculation basis for the invests

each building / meter may have different prices / mix prices just if necessary

list in data sheet:

prices for consumption

fix prices (connection power, metering, ...)

tax parts of prices

further information (changes in price system)

tax parts of prices are not fixed for the EPC period

share of risks

DONT:

use prices per litres oil or m³ gas – always calculate per kWh (fuel switch)

use gross prices – calculation is done in net, also baseline is net



STEP IV baseline calculation

costs baseline: calculation based on reference price and baseline consumption

formula:

baseline calculated net – exclusive of VAT, VAT is just rated per each yearly accounting

verification /check for representativeness

comparison with other years

comparison to benchmarks

check for special events /changements in the baseline year

waterwater

yelectricitperkWyelectricityelectricityelectricit

heatperkWheatheatheat

price

price

Fixpriceprice*m³

Fixprice*kWprice*kWh

Fixprice*kWprice*kWhstsBaselineco



STEP IV baseline documentation

part of the baseline documentation, beside its calculation, are:

information about work time (opening hours for public buildings, work schedule, class schedule in schools)

scheme of yearly events

information about facilities and technical equipment (large-scale consumers of power, IT-equipment, lightning)

number of employees, pupil, students in each building

further special utilisations

all equipment and activities in baseline year should be documented

baseline documentation should be part of the contract



Yearly accounting of energy savings - overview

corrected energy costs

costs water

costs electricity

costs heat

Bas

elin

e

sav

ing

s

period X

invoices for energy and water

correction for cleared year

prices of baseline year

cleared year

heat consumption

electricityconsumption

waterconsumption

m³ water consumpt.

kWhelectr. consumpt.

kWhheat consumpt.

climate correction

utilisations correction

I.

II.

III. A

IV. V.

III. B



STEP III A climate correction

yearly heat consumption is depending on climate (years may be colder/warmer than baseline year)

to calculate the savings in comparison to the baseline, a neutralisation of climate influences has to be done

useful is official statistical climate data

Germany: Gt15

if day colder than 15°C , than Gt15 = 15- median temperature of the day, else 0

heat consumption for hot water generation is not climate depending

formula (example):

regulations for climate correction are part of the EPC-contract

ar)baselineyeyearheat GT/GT(*kWh*0,8kWh*2,0kWh heatheat



STEP III B utilisations correction

BASELINE ADAPTION afternoon



Summary

baseline calculation is done based on energy bills

calculation method should be part of the EPC contract

changements in utilisation influencing consumption are very common – a method to their calculation / neutralisation should be agreed

for climate correction a calculation method based on official climate data should be fixed in the contract


Thank you for your attention

and

Good luck with your BASELINES!

epc: data collection and baseline creation. berliner energieagentur gmbh coordination berlin energy...

Documents

baseline year baseline

baseline consumption

kwh baseline

baseline creation step

baseline creation background

data collection

energy bills

midwales energy agency