SLIDE 1
Field Study 2016: achievable autonomy in PV Storage + heat pump E3/DC GmbH, Karlstraße 5, 49074 Osnabrück
ees International Intersolar 2017 B1.151 Thursday 1th June 10:55h
SESSION: RESIDENTIAL AND COMMERCIAL STORAGE SOLUTIONS: DIFFERENTIATION AS COMPETITIVE ADVANTAGE?
SLIDE 2 Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
At a glance: E3/DC product portfolio
S10 MINI S10 MINI S10 E12 (3ph) S10 E (3ph) QuattroporteWallbox BLACKLINE BLACKLINE
2
März 2010 Ausgründung aus der Wilhelm Karmann GmbH April 2014 TOP 3 EuPD Nov 2014 PV Magazine Award Feb 2016 Top Brand PV Storage Nov 2015 Marke des Jahrhunderts Jan 2015 Top Brand PV Storage Juni 2015 TOP100 Siegel März 2015 reddot Design Award Juni 2016 Kundenzufrieden- heitssiegel (1,6) EuPD Juni 2016 TOP Stromspeicher WiWo Jan 2017 Top Brand PV Storage Jan 2017 Strong Growth Brand EuPD Okt 2016 German Design Award Okt 2016 IBESA April 2017 Plus X Award Juni 2017 Kundenzufrieden- heitssiegel (1,55) EuPD
Heat pump champions
SLIDE 3 12.000 kWh Solar
Heating
.. 10000 kWh
Waterheating
..2000 kWh Power .. 4000 kWh
9.000
Heat Pump
household Heat power
Energy Storage Ambient Energy PV System
in
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
electrical energy flow: PV-storage-heat pump
3
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Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
Volume E3/DC versus market volume (germany 2010-2017)
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240 170 120 70 40 25 35 20
50 100 150 200 250 300
Old WSVO84 WSVO95 EnEV KfW60 KfW40 3liter house passive house
kWh heating energy / m^2 / a
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
Heating energy vs building standard
living area [qm] 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 220 140
SLIDE 6
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
N = 100 Investigation: selected systems with heat pumps
76 69 73 66 65 50 69 59 61 66 65 66 67 62 61 63 63 57 66 66 60 60 61 56 56 64 62 68 55 62 56 68 53 63 48 68 57 71 60 62 66 65 70 60 59 76 62 69 62 56 59 56 61 55 53 76 68 71 71 59 58 55 72 78 57 75 54 65 62 78 69 74 56 59 56 63 74 73 70 57 56 74 65 58 62 64 68 65 66 65 74 40 45 50 55 60 65 70 75 80 85
3000 5000 7000 9000 11000 13000 15000
Autonomy grade% kWh totat annual consumption (heating + household)
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Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
lowest remaining total annual energy cost €
76 69 73 66 65 69 59 61 66 65 66 67 62 61 63 63 57 66 66 60 60 61 56 56 64 62 68 55 62 56 68 53 63 68 57 71 60 62 66 65 70 60 59 76 62 69 62 56 59 56 61 55 53 76 68 71 71 59 58 55 72 78 57 75 54 65 62 78 69 74 59 56 63 74 73 70 56 74 65 58 62 64 68 65 66 65 74
40 45 50 55 60 65 70 75 80 85
0,00 € 200,00 € 400,00 € 600,00 € 800,00 € 1.000,00 € 1.200,00 € 1.400,00 €
autonomy grade%
Building size Thermal insulation
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Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
N = 100 Investigation: selected systems with heat pumps
Winter relevant average
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Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
Good and bad installations?
76 69 73 66 65 50 69 59 61 66 65 66 67 62 61 63 63 57 66 66 60 60 61 56 56 64 62 68 55 62 56 68 53 63 48 68 57 71 60 62 66 65 70 60 59 76 62 69 62 56 59 56 61 55 53 76 68 71 71 59 58 55 72 78 57 75 54 65 62 78 69 74 56 59 56 63 74 73 70 57 56 74 65 58 62 64 68 65 66 65 74 40 45 50 55 60 65 70 75 80 85
3000 5000 7000 9000 11000 13000 15000
Autonomy grade% kWh totat annual consumption (heating + household)
Excellent Moderate
SLIDE 10 Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
Reasons for good and bad installations.
for good or bad results
- But: german south has better conditions
(higher solar yield)
- The higher the consumption, slightly
lower the autonomy seems to be
SLIDE 11 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
SLIDE 12
Performance Field Study 2016: achievable autonomy in PV coupled electrical heating
Reasons for good and bad installations.
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.
living area [qm] 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 15,8 220 140
Rule 1: 1,3*kWh|a / 1000 = kWp Rule 2: kWh storage netto > kWh|a / 1000
SLIDE 13 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
