Weather, seasonal and decadal forecasts for the energy sector F.J. Doblas-Reyes ICREA, BSC and IC3, Barcelona, Spain.

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Weather, seasonal and decadal forecasts for the energy sector F.J. Doblas-Reyes ICREA, BSC and IC3, Barcelona, Spain

Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March Climate prediction Progression from initial-value problems with weather forecasting at one end and multi-decadal to century projections as a forced boundary condition problem at the other, with climate prediction (sub-seasonal, seasonal and decadal) in the middle. Prediction involves initialization and systematic comparison with a simultaneous reference. Adapted from Meehl et al. (2009) Initial-value driven Boundary-condition driven Time Weather forecasts Subseasonal to seasonal forecasts (2 weeks-18 months) Decadal forecasts (18 months-30 years) Climate-change projections

3 SPECS overall strategy Climate data is not climate information Links to EUPORIAS/NACLIM (ECOMS), but also IS-ENES2, PREFACE, EUCLEIA, CLIPC, … Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

4 EUPORIAS principles Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

The energy sector requires:  Forecasts for locations where the mean is large (wind speed above a threshold), and both variability (something to predict) and skill (something useful to say) are high  Need energy generated over a period (month, season, etc), with uncertainty estimates, at the wind farm level  Information for off-shore maintenance (~3 weeks lead time)  Also consumption in other regions to balance network Weather and climate forecasters have to deal with:  Better understanding of the impact models, and the best way to adapt them to the useful climate information available  Scarce observations  Calibration (statistical properties mimic those of the data measured at the wind turbine height) and combination  Downscaling, if necessary  Documentation (use the IPCC calibrated language), demonstration of value, outreach Services for wind energy 5 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Pre-construction decisions:  EDPR, wind farm planners: Optimising site selection to account for the medium- to long-term  Iberdrola, wind farm investors: Evaluate return on investments, maximise loan rates  National and EU policy makers: Understand changes to energy mix, impact to energy security/stability Post-construction decisions:  EDF, energy producers; RTE, grid operators: Wind resource management for improved grid operations  Marexspectron, energy traders: Wind power resource effects on financial markets  Alstom/GE, wind farm developers and operators: Optimise planning for maintenance works  GE, wind farm investors: Optimise return on investments, manage risk of low return periods Services for wind energy 6 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Difference in winter (DJF) standardised 10-metre wind speed (left) and capacity factor (right) for seasons with above normal and below normal North Atlantic Oscillation index. Daily capacity factor (%) calculated from ERAInterim 10-metre wind speed and temperature data using an idealised power curve, a log scaling law to transform the wind to hub height wind, and a Rayleigh distribution to model diurnal variability. Capacity Factor (%) Wind Speed (m/s) Resource seasonal variability 7 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Seasonal wind power prediction 8 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Newsletter Website Advancing Renewable Energy with Climate Services (ARECS) provide feedback, register your needs The service 9 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

V. Torralba (IC3) Bias correction and calibration have different effects. ECMWF S4 predictions of 10 m wind speed over the North Sea for DJF starting in November. Raw output (top), bias corrected (simple scaling, left) and ensemble calibration (right). One-year-out cross-validation. Calibration Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March

Solar power production SPECS develops decision management tools for stakeholders: 11 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Solar power production BSC and AEMET manage the WMO SDS-WAS NAMEE Regional Center ( and the Barcelona Dust Forecast Center ( This effort contributes to solar energy management preventing energy loss and helping with the location of future plants. 12 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Example of a national energy modelling system. We only addressed this part. Holistic approaches are needed. RE is just part of the story 13 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

European electricity flows for Jan-Feb (left) and June-July (right). Red nodes are the main exporters and blue the main importers. For clarity only the eight countries with the highest exchange are shown. Data from ENTSO-E ( ). The role of energy export Matteo De Felice (ENEA) 14 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Weather and climate affect exchanges via electricity demand (heating or cooling, from the customer point of view) and RE production. The role of energy export Matteo De Felice (ENEA) 15 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015

Grand Challenge on Regional Climate Information: What gaps in our scientific understanding and information, if addressed, would maximise the value content of regional climate information? Steering group: Clare Goodess (WGRC), Francisco Doblas-Reyes (WGSIP), Lisa Goddard (CLIVAR), Bruce Hewitson (WGRC), Jan Polcher (GEWEX & WGRC), supported by Roberta Boscolo (WCRP) Initial case study for the city of Maputo (Mozambique) WCRP RCI Grand Challenge 16 Private Sector Partnership Forum: Weather, seasonal and decadal forecasts for the energy sector, 23 March 2015