ees International Intersolar 2017 B1.151 Thursday 1th June 10:55h SESSION: RESIDENTIAL AND COMMERCIAL STORAGE SOLUTIONS: DIFFERENTIATION AS COMPETITIVE ADVANTAGE? Field Study 2016 : achievable autonomy in PV Storage + heat pump E3/DC GmbH, Karlstraße 5, 49074 Osnabrück
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating At a glance: E3/DC product portfolio Heat pump champions S10 MINI S10 MINI S10 E12 (3ph) S10 E (3ph) QuattroporteWallbox BLACKLINE BLACKLINE April 2014 Nov 2014 Jan 2015 März 2015 Juni 2015 Nov 2015 Feb 2016 Juni 2016 Jan 2017 April 2017 Okt 2016 TOP 3 EuPD PV Magazine Top Brand reddot Design TOP100 Siegel Marke des Top Brand TOP German Top Brand Plus X Award PV Storage Award Jahrhunderts PV Storage Stromspeicher Design PV Storage Award WiWo Award März 2010 Ausgründung aus der Wilhelm Karmann GmbH Okt 2016 Jan 2017 IBESA Strong Growth Juni 2017 Brand Juni 2016 Kundenzufrieden- EuPD Kundenzufrieden- heitssiegel heitssiegel (1,55) EuPD (1,6) EuPD 2
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating electrical energy flow: PV-storage-heat pump PV System kWh Storage in Ambient out Energy Solar 9.000 Heat power Heat Pump 12.000 household Power Heating Waterheating Energy .. 10000 kWh ..2000 kWh .. 4000 kWh 3
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating Volume E3/DC versus market volume (germany 2010-2017) 4
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating Heating energy vs building standard living area [qm] 140 220 type of building KfW40+ KfW55 KfW70 EnEV2002 KfW40+ KfW55 KfW70 EnEV2002 heating energy [kWh] 3500 4900 6300 9800 5500 7700 9900 15400 COP average of heat pump 3 3 3 3 3 3 3 3 electrical energy heat [kWh] 1167 1633 2100 3267 1833 2567 3300 5133 Water heating [kWh] 1200 1200 1200 1200 1600 1600 1600 1600 household consumption [kWh] 3000 3000 3000 3000 4000 4000 4000 4000 sum [kWh] 5367 5833 6300 7467 7433 8167 8900 10733 300 kWh heating energy / m^2 / a 250 240 200 170 150 120 100 70 40 50 35 25 20 0 Old WSVO84 WSVO95 EnEV KfW60 KfW40 3liter house passive house
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating N = 100 Investigation: selected systems with heat pumps 85 80 78 78 76 76 76 75 75 74 74 74 74 73 73 72 71 71 71 Autonomy grade% 70 70 70 69 69 69 69 68 68 68 68 68 67 66 66 66 66 66 66 66 65 65 65 65 65 65 65 65 64 64 63 63 63 62 62 63 62 62 62 62 62 62 61 61 61 61 60 60 60 60 59 60 59 59 59 59 58 58 57 57 57 57 56 56 56 56 56 56 56 56 55 55 55 55 54 53 53 50 50 48 45 40 3000 5000 7000 9000 11000 13000 15000 kWh totat annual consumption (heating + household)
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating lowest remaining total annual energy cost € Building size Thermal insulation 85 80 78 78 76 76 76 75 75 74 74 74 74 73 73 72 71 71 71 70 70 70 69 autonomy grade% 69 69 68 69 68 68 68 68 66 67 66 66 66 66 66 66 65 65 65 65 65 65 65 65 64 64 63 63 63 63 62 62 62 62 62 62 62 62 61 61 61 61 60 60 60 60 60 59 59 59 59 59 58 58 57 57 57 56 56 56 56 56 56 56 55 55 55 55 54 53 53 50 45 40 0,00 € 200,00 € 400,00 € 600,00 € 800,00 € 1.000,00 € 1.200,00 € 1.400,00 €
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating N = 100 Investigation: selected systems with heat pumps Winter relevant average
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating Good and bad installations? 85 80 Excellent 78 78 76 76 76 75 75 74 74 74 74 73 73 72 71 71 71 Autonomy grade% 70 70 70 69 69 69 69 68 68 68 68 68 67 66 66 66 66 66 66 66 65 65 65 65 65 65 65 65 64 64 63 63 63 62 62 63 62 62 62 62 62 62 61 61 61 61 60 60 60 60 59 60 59 59 59 59 58 58 57 57 57 57 56 56 56 56 56 56 56 56 55 55 55 55 54 53 53 50 50 48 Moderate 45 40 3000 5000 7000 9000 11000 13000 15000 kWh totat annual consumption (heating + household)
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating Reasons for good and bad installations. Location is no reason • The higher the consumption, slightly • for good or bad results lower the autonomy seems to be • But: german south has better conditions (higher solar yield)
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating Reasons for good and bad installations. 10-20% losses due to undersized solar system • • 10kWp limit is the reason, why many customers get too small system
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating Reasons for good and bad installations. Rule 1: 1,3*kWh|a / 1000 = kWp Rule 2: kWh storage netto > kWh|a / 1000 living area [qm] 140 220 type of building KfW40+ KfW55 KfW70 EnEV2002 KfW40+ KfW55 KfW70 EnEV2002 heating energy [kWh] 3500 4900 6300 9800 5500 7700 9900 15400 COP average of heat pump 3 3 3 3 3 3 3 3 electrical energy heat [kWh] 1167 1633 2100 3267 1833 2567 3300 5133 Water heating [kWh] 1200 1200 1200 1200 1600 1600 1600 1600 household consumption [kWh] 3000 3000 3000 3000 4000 4000 4000 4000 sum [kWh] 5367 5833 6300 7467 7433 8167 8900 10733 Solar power [kWp] 7,0 7,6 8,2 9,7 9,7 10,6 11,6 14,0 Storage capacity [kWh] 9,2 9,2 10,6 10,6 9,2 10,6 13,8 15,8 In many cases (electrical consumption >8000kWh) the <10kWp installation is nonsense. Golden rule: if you get >10% more autonomy, you can accept 40%*7€cent EEG = 2,8€cent/kWh.
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating summary Autonomy of PV storage coupled with heat pump‘s strongly depends on Solar overpowering (recommendation: kWp = >=1,3*consumption / 1000 [kWh] • Storage size (recommendation: kWh = 1,2*consumption / 1000 [kWh] • • Neglecting the 10kWp limit (when necessary) The sectorial coupling (heat pump & household) was proven using N=100 systems (2016 complete data) using E3/DC 3ph DC S10E system. The EnEV 2016 goal to motivate customers towards PV+storage+heat pump is beginning to work (2017: stronger demand). Excellent autonomy was achieved between 60-70% in whole consumption range between 4000-11000kWh, because • 2016 and future years will follow moderate climate and provide 50% average self consumption even in winter SG Ready interface is increasing demand/reponse behaviour • 3ph DC efficiency / high power+storage can cover the range up to >10000kWh / a •
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