SolarGIS: solar and meteo data and online applications for PV planning and performance assessment Marcel Š úri http://solargis.info Tomá š Cebecauer Artur Skoczek GeoModel Solar s.r.o Bratislava, Slovakia - 1 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
About GeoModel Solar Expert consultancy: • Solar resource assessment and meteo databases • PV yield assessment and performance modeling Development and operation of SolarGIS meteo database and real-time data services for: • Site selection and prefeasibility • Planning and project design • Monitoring and forecasting of solar power 20 years on geoinformatics, 11 years in solar energy and PV More info at http://geomodelsolar.eu - 2 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
International collaboration International Energy Agency , Solar Heating and Cooling Program: • Task 36 Solar Resource Knowledge Management • Task 46 Solar Resource Assessment and Forecasting • EU COST Action Weather Intelligence for Renewable Energies • EU project Management and Exploitation of Solar Resource Knowledge (finished) • NREL (US) • SUNY (US) • DLR (DE) • Fraunhofer ISE (DE) • Stellenbosch University (ZA) • University of Geneva (CH) • EC JRC (IT) • SUPSI DACD ISAAC (CH) • CENER (ES) - 3 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
Timeline 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 PVGIS SolarGIS Research and demonstration project Commercial database, Promotion of PV Professional software Public awareness in Europe Industrial applications by European Commission, by GeoModel Solar Joint Research Centre - 4 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
SolarGIS solar radiation meteo data ancillary data technology parameters Solar and PV simulation models Web interface real-time data historical data + nowcasting + forecasting Support of long-term power plant operation preliminary site project monitoring & management analysis optimisation
DATA SolarGIS solar radiation meteo data ancillary data technology parameters Solar and PV simulation models Web interface real-time data historical data nowcasting forecasting Support of long-term power plant operation preliminary site project monitoring & management analysis optimisation
Solar resource data and services: user requirements • Global coverage, harmonized and validated • Available at any location, fast access • High accuracy, low (quantified) uncertainty • Long-climate record, no gaps • High detail (temporal, spatial) • Modern data products (time series, aggregated statistics, TMYs) • Real-time supply (operational services): • Historical data All this is possible! • Nowcasting • Operational processing of satellite • Forecasting and meteorological data + Meteo and other geodata • High performance computing and storage for energy modeling • Supported by high-quality ground measurements • Web technology
Solar database – inputs (real-time) Multispectral satellite data SolarGIS geographical extent in 09/2011 Meteosat MSG and MFG resolution: 15/30 min., 3 km Implementation of data from other satellites Daily Aerosol Optical Depth (AOD) Daily Water vapour 125 km 35 km) High-resolution terrain 90 metres - 8 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
Solar database – SolarGIS Breakthrough in solar radiation modelling Innovation • Improved cloud detection and albedo modelling • Improved snow/ice/fog detection • High positional and temporal stability • Implemented daily dynamics of atmospheric data • High resolution elevation and horizon (up to 90 metre) • Large territories covered a thigh resolution • Quantified uncertainty Cebecauer et al. 2010; Š úri et al. 2010; Cebecauer and Š úri 2010; Ruiz-Arias et al. 2010; Cebecauer 2011; Cebecauer et. al 2011a,b,c http://geomodelsolar.eu/publications
Solar radiation model - SolarGIS ADVANTAGES LIMITATIONS Spatial and temporal consistency Lower instantaneous accuracy for the point estimate High radiometric stability (when compared to high quality measurements) Availability ~99.5% High frequency and spatial resolution History of 17/12 years Real-time data Continuous global geographical and temporal coverage Resolution of the input data used in the SolarGIS model: AOD: Atmospheric Optical Depth WV: Water Vapour MFG/MSG: Meteosat First/Second Generation
Air temperature, wind and humidity Derived from ECMWF, NOAA/NCEP GFS and CFSR models § Data available from 01/1991 up to present § Original resolution of 6-hours is interpolated to hourly or 15-minute values § Original grid cell resolution of 0.25 arc-degrees is post-processed to 1 km DNI Validation § Validated on 60+ sites § Low bias and Root Mean Square Deviation § Probability distribution Air temperature - 11 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
SolaGIS: solar radiation accuracy Measures: Bias, RMSD, distribution function (histogram) “Good” (natural) bias for any specific site - achievable globally: • ±2% to ±3% for GHI (up to 7% in high mountains) • ±5% to ±7% for DNI (up to 15% in extreme regions) Bias is higher in temperate climate, complex terrain and in regions with high aerosols “Good” (natural) hourly RMSD for any site: • for GHI hourly: 9% to 25% (up to 40% in high mountains) • for DNI hourly: 20% to 45% (up to 60% in high mountains) RMSD is higher in higher latitudes, in complex terrain, cloudy regions and in regions with high variability of aerosols - 12 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
! University of Geneva (IEA SHC Task 36): SolarGIS is the best performing solar database on the market Independent comparison of solar databases Data BSRN Carpentras 2006 Source Pierre Ineichen, 2011: Five satellite products deriving beam and global irradiance validation on data from 23 ground stattions. University of Geneva, International Energy Agency, SHC Task 36 - 13 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
SolarGIS solar radiation meteo data ancillary data technology PV MODELS parameters Solar and PV simulation models Web interface real-time data historical data nowcasting forecasting Support of long-term power plant operation preliminary site project monitoring & management analysis optimisation
Performance under STC (Standard Test Conditions): 1429 kWh/kWp Global irradiation Air temperature SolarGIS (module surface) PV simulation models Shading by terrain -0.0% Angular reflection -3.1% Performance outside -8.5% STC DC losses -6.5% ±2.5% -2.5% ±0.5% Inverters -1.0% ±0.5% AC and transformers -10.0% ±2.5% Availability -0.5% ±0.5% DC losses: mismatch, cabling, dirt, dust, snow, icing, self-shading, Output: 1141 kWh/kWp Simulations for a variety of PV modules (c-Si, CdTe, CIS/CIGS, a-Si, … ) Simulations for fixed and tracking systems
SolarGIS – new data model – high accuracy simulations Functionality • Simulation of a-Si, c-Si, CdTe and CIS/CIGS module technologies • Fixed mounting • Suntracking (1-axis, 2 axis) Innovation • Based on high resolution irradiance and temperature data - time series (offline) and aggregated statistics (online) • New data model (Cebecauer et al. 2011 EUPVSEC) • Improved models for a-Si and c-Si (Huld et al. 2011; Skoczek et al. 2011 EUPVSEC) • Modes for trackers ( Huld et al. 2010 ) • High resolution elevation & horizon (Ruiz-Arias et al. 2010) • Module selfshading (Fraunhofer ISE 2010) • Improved uncertainty
Simulation of c-Si and a-Si modules Energy yield and performance ratio Effectiveness Triple junction roof-integrated PR a-Si modules mounted horizontally Air temperature Free-standing c-Si modules mounted horizontally Air temprature and PR: Red: measured data (SUPSI) Black: simulated data (SolarGIS ) In collaboration with SUPSI DAADC ISAAC Canobbio, Switzerland More in Skoczek et al. 2011 (EUPVSEC) !
SolarGIS solar radiation meteo data ancillary data technology parameters Solar and PV simulation models APPLICATIONS Web interface nowcasting historical data real-time data forecasting Support of long-term power plant operation preliminary site project monitoring & management analysis optimisation
SolarGIS: online system for PV and solar energy • Access to SolarGIS historical and real-time data (automatic and interactive) • Maps and prospecting tools • PV planning and optimization • PV monitoring & performance assessment • PV forecasting http://solargis.info - 19 - 26th European Photovoltaics Solar Energy Conference and Exhibition, 5-9 September 2011, Hamburg
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