1. Presentation of services for the
Commercial Mission to Japan. 05/2012

2. IrSOLaV company profile
 Spin-off from CIEMAT. Initially formed by
researchers with broad experience in Solar
Energy and solar radiation knowledge.
 Methodology for solar radiation derived from
satellite information.
 Solar radiation data provider for most of the
main promoters of solar energy projects in
Spain and in the Mediterranean area.
 Consulting services on ground measurement,
quality check and solar resource
characterization.
 Close contact to several relevant R&D
initiatives: Task 36 of IEA/SHC, COST action
on solar radiation and wind forecast.
Solar resource consulting services and data provider

3. IrSOLaV Products for India: 1) Solar Radiation
 Time series of solar irradiance (GHI and DNI)
from 1994-2012 generated from Meteosat
satellite information.
 Solar resource analysis reports with statistical
study for the long term.
 Typical Meteorological Year (TMY) of solar
radiation components and temperature.
 Consulting services on measuring solar
radiation and quality reports of solar radiation
ground stations and data quality checks.
Solar resource consulting services and data provider

4. IrSOLaV Products for India: 2) Plant performance
 Analyis of energy production of the plant
using SAM, TRSYS (STEC-library), etc..
 Report on energy generation with long term
analysis (probabilities P50, P70, P90)
Solar resource consulting services and data provider

5. Solar Radiation extinction basis
Top of Atmosphere radiation
Ozone.……….….... Absorption ( 1%)
Air molecules..…… Rayleigh scattering ( 15%)
Aerosols…….………..…...…… Scattering and absorption (15% - 100%)
Reflection, scattering, absorption (max. 100%)
Clouds………….………..
Absorption ( 15%)
Water vapor…….……...………
Atmosphere attenuants affect considerably to the DNI on surface
Solar resource consulting services and data provider

6. Determination of cloud index
Imagen original A. Referencia 09/04/94
Brillancia
09/04/94 Actualizado mediante
slot 21= 10 a 10:30 Filtro adaptativo
( ρ n , a ,σ ρ ref )
Albedo x 100
A. aparente
Albedo x 100
09/04/94
slot 21= 10 a 10:30
C. de nubosidad x 100 ρ ap − ρ ref
C. nubosidad
09/04/94 n=
slot 21= 10 a 10:30 ρ nub − ρ ref
Solar resource consulting services and data provider
10

7. Calculation of hourly
clearness index
Utilizando los datos medidos en tierra C. nubosidad
simultáneamente a los tres años de imágenes de 09/04/94 slot 21
C. de nubosidad x 100
satélite, se entrena una expresión en la que se
añaden a la nubosidad variables explicativas como:
la declinación, y seis variables cualitativas binarias,
fruto de la combinación de seis situaciones posibles:
Latitud:
sur (<38º), centro (38º<centro<42º) o norte (>42º).
Hora del día:
I. Claridad
mañana (slot = 21) o tarde (slot = 25 o 27) 09/04/94 slot 21
I. de claridad x 100
K Gh = 0,060 ⋅ δ − 0,8073 ⋅ n +
(0,7153 ⋅ SM + 0,7136 ⋅ CM + 0,7050 ⋅ NM
+ 0,7690 ⋅ ST + 0,7438 ⋅ CT + 0,7473 ⋅ NT )
Solar resource consulting services and data provider
11

8. Linke turbidity old Meteotest database
worldwide
Solar resource consulting services and data provider

9. Linke turbidity old Meteotest database
worldwide
Solar resource consulting services and data provider

10. Linke turbidity new Meteotest database
worldwide
Aerosol Optical Depth Linke turbidity factor
Higher values in the new database of Meteotest
Solar resource consulting services and data provider

11. Linke turbidity new Meteotest database
worldwide
Solar resource consulting services and data provider

12. Sensitivity of DNI to Linke turbidity on clear
sky conditions
Dia juliano=200, z=500, Lat=37º N Long=-2º E TL=4, dia juliano=200, Lat=37º N Long=-2º E
1200 1000
TL=2 z=0 m
TL=4 900 z=500 m
1000 TL=6 z=1000 m
800
700
800
600
DNI (Wh m -2 )
DNI (Wh m -2 )
600 500
400
400
300
200
200
100
0 0
0 2 4 6 8 10 12 14 16 18 20 22 24 0 5 10 15 20 25
Hora Hora
−δ R mTL
DNI = I SC ε e
Solar resource consulting services and data provider

13. Satellite estimations compared with ground data
Daily global irradiation in Nagpur estimated from satellite images
for
year 2007 compared to ground data available from World
Radiation
data Centre
Solar resource consulting services and data provider

14. GHI in Ahmadabad
Solar resource consulting services and data provider

15. Some GHI and DNI comparisons in Gujarat
Global horizontal Direct normal
Solar resource consulting services and data provider

16. Some results for monthly means
Monthly means of DNI (1999-2009) estimated from satellite
information for several Indian sites.
Solar resource consulting services and data provider

17. Time series of high temporal resolution: 10-minute data from
hourly is needed for simulating system response to transient
Solar resource consulting services and data provider

18. Solar radiation forecast
Solar resource consulting services and data provider

19. Solar radiation forecast: short term horizon
 Predictions of hourly solar radiation with a
temporal horizon of 72 hours.
 Predictions are done 4 times per day at:
 00:00 UTC
 06:00 UTC
 12:00 UTC
 18:00 UTC
 Delivered by FTP, mail or accesable in our
web portal www.solarexplorer.info
Solar resource consulting services and data provider

20. Solar radiation forecast: based on satellite images
 Predictions of 15-60 minutes solar radiation
with a temporal horizon of 6 hours.
 Predictions are done every hour.
 Delivered by FTP, mail or accesable in our
web portal www.solarexplorer.info
Solar resource consulting services and data provider

21. Solar radiation forecast: based on sky imagers
 Predictions of 10-60 minutes solar radiation
with a temporal horizon of 3 hours.
 Predictions are done x minutes.
Solar resource consulting services and data provider

22. Application to solar plants with
storage
Solar resource consulting services and data provider

23. Solar radiation maps: India
Solar resource consulting services and data provider

24. Solar radiation maps: Chile - region of ARICA
Solar resource consulting services and data provider

25. www.solarexplorer.info
Solar resource consulting services and data provider

26. www.solarexplorer.info
Solar resource consulting services and data provider

27. Partners
 Global Forecasters: spin-off from CIEMAT. Wind energy
services.
 STA: spin-off from CIEMAT. Expert in Concentrated
Solar thermal power plants. (CSP) Design, simulation of
CSP plants, research,….
 Instituto de Energia solar: PV expert. Simulation of PV
plants. Design of PV plants and auditory of the plants.
 Geonica: provision and installation of meteorological
stations to measure solar radiation.
Solar resource consulting services and data provider

28. For more detailed information please referred to:
IrSOLaV, S.L. c/ Santiago Grisolía, 22
IrSOLaV, S.L. c/ Santiago Grisolía,
Parque Científico de Madrid
Parque Científico de Madrid
28760 Tres Cantos, Madrid
28760 Tres Cantos, Madrid
Tfno. +34 (91) 1263612
Tfno. +34 (91) 1263612
Web: www.irsolav.com
Web: www.irsolav.com
E-mail: info@irsolav.com
E-mail: info@irsolav.com
Solar resource consulting services and data provider