EPC: data collection and baseline creation

1. EPC: data collection and baseline creation

2. 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 eurocontract@berliner-e-agentur.de Main Project Contact: Alexandra Waldmann Waldmann@berliner-e-agentur.de Project Website: http://www.eurocontract.net EPC: data collection and baseline creation 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 Berliner Energieagentur GmbH

3. EPC: data collection and baseline creation • 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. discussion15 min • Material: - presentation - baseline data sheet Berliner Energieagentur GmbH

4. period X invoices for energy and water I. correction for baseline year II. baseline year fuel/heat consumption electricity consumption water consumption connection power connection power kWh heat consumpt. kWh electr. consumpt. m³ water consumpt. III. IV. prices of baseline year EPC: data collection and baseline creation I. baseline overview BASELINE Berliner Energieagentur GmbH

5. EPC: data collection and baseline creation • 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) Berliner Energieagentur GmbH

6. EPC: data collection and baseline creation • 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 Berliner Energieagentur GmbH

7. EPC: data collection and baseline creation • 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 Berliner Energieagentur GmbH

8. EPC: data collection and baseline creation • 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 Berliner Energieagentur GmbH

9. EPC: data collection and baseline creation • 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 Berliner Energieagentur GmbH

10. EPC: data collection and baseline creation • 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 Berliner Energieagentur GmbH

11. period X invoices for energy and water I. correction for cleared year II. cleared year heat consumption electricity consumption water consumption corrected energy costs climate correction III. A costs heat III. B utilisations correction Baseline savings costs electricity kWh heat consumpt. kWh electr. consumpt. m³ water consumpt. costs water V. prices of baseline year IV. EPC: data collection and baseline creation Yearly accounting of energy savings - overview Berliner Energieagentur GmbH

12. EPC: data collection and baseline creation • 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 Berliner Energieagentur GmbH

13. EPC: data collection and baseline creation STEP III B utilisations correction BASELINE ADAPTION afternoon Berliner Energieagentur GmbH

14. EPC: data collection and baseline creation • 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 Berliner Energieagentur GmbH

15. Thank you for your attention and Good luck with your BASELINES! Berliner Energieagentur GmbH