Public and free website providing
real-time hourly solar irradiation data
all over Europe
Loreto González-Bonilla
Instituto de Energía Solar – Universidad Politécnica de Madrid (IES-UPM), Spain
WebPV, Madrid, Spain
EUREC Awards, October 2014, Brussels, Belgium
Solar power applications require
good solar irradiation data
Is my system
working fine?
PR=
Solar Irradiation
()
()
Limited spatial area
Accuracy
Acquisition costs
System Losses
Energy production
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
2
High density of photovoltaic systems in buildings
Neighbor,
Could you tell me my
solar irradiation?
Domestic installations monitored by Rtone in
the South of Belgium. In this region, the density
of these installations is very high.
Source: EPIA, Global Market Outlook for
Photovoltaics 2014-2018, June 2014
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
3
Novelty!
Neighboring installations as irradiation sensors
1. Irradiation=f(Energy production)
2. Irradiation from one
plane to the other
Gh 
(Decomposition and
translation model)
1
f TEMP  f PER F

Eh
PP
G
*
Irradiation?
z2
d1
d2
z1
3. Kriging procedure
Client
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
4
Accuracy of the results
validated against ground measurements
Hourly PV energy estimated [Wh]
6000
5000
y = 0.9864x - 0.472
R² = 0.9923
4000
3000
2000
1000
0
0
1000
2000
3000
4000
5000
6000
Hourly PV energy measured [Wh]
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
5
And if there are no neighboring installations….
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
6
Global Tilted Irradiation from weather conditions
1. Irradiation under
clear-sky conditions
(Perez-Ineichen)
Aerosol information
Cloud cover
information
2. Irradiation under real state of
the sky (including cloud cover)
(Myers model at NREL)
3. Global Tilted Irradiation
(Hay model)
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
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User interface:
SOWEDA
(Solar Web Data)
• Free public website
(www.soweda.eu)
• Hourly global horizontal
or tilted solar irradiation
• Solar irradiation from
weather conditions
• Data for the whole
European territory
• One hour to five days
backwards
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
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Other data provided as premium service
• Solar irradiation from
neighboring PV installations
• Web services
• PV energy output data
• Forecasting up to 10 days
ahead
• Data for the whole world
Real case: Kualalumpur, Malaysia
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
9
Thank you for your attention
Loreto González-Bonilla
PERSONAL CONTACT
Email
[email protected]
Skype
loreto.gbonilla
LinkedIn
www.linkedin.com/in/loretogbonilla
WEBSITES
Soweda
WebPV
PVCROPS
www.soweda.eu
www.webpv.net
www.pvcrops.eu
PUBLICATION
Jonathan Leloux, Luis Narvarte, Loreto González-Bonilla,
A free real-time hourly tilted solar irradiation data Website for Europe,
29th European Photovoltaic Solar Energy Conference and Exhibition,
Amsterdam, 2014
Loreto González-Bonilla. EUREC Awards, October 2014, Brussels, Belgium
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Generación de datos de radiación solar a partir de datos