HydropowerThe hydropower sector uses hydro-meteorological predictions to guarantee people safety and dam security, and to optimise energy production and the economic value of water resources.

Accurate and reliable weather forecasts are needed over a wide range of space and time scales:

  • Short-term streamflow forecasts (2-3 days ahead) for flood protection and the security of installations.
  • Medium-range forecasts (7-15 days ahead) for the optimisation of production.
  • Long-term (months ahead) predictions for water resources management and environment protection during drought periods.
  • Hydrological trends and outlooks under future climate conditions for anticipating the effects of expected changes in runoff volume, extremes and seasonability, which directly affect hydropower generation.

Hydropower has the advantage of being a renewable source of energy that can be stored and reallocated in space and time. Storage allows handling the natural variability of hydro-meteorological hazards and extremes.

Hydropower water storage reservoirs, however, operate often for multiple purposes (e.g. domestic/agricultural water supply, environment protection, tourism, flood protection, etc.) and conflicts of use may arise when resources are scarce. Available forecast information, optimisation tools and adaptive strategies help to inform operational decision-making.

In this sectoral survey, we will evaluate the impacts of improved predictability of hydro-meteorological events on the hydropower sector at different temporal scales.

Four sites in Europe, covering different hydro-climatic and socio-economic contexts, are included to capture the diversity of conditions encountered in hydropower management:

  • South-East French catchments;
  • The Lake Como in Italy, a typical snow-dominated Alpine basin;
  • The Jucar River basin in Spain, a typical south Mediterranean basin with an important share of water for irrigated agriculture (80%) and conflicts on water allocation in a multi-reservoir system; and
  • The upper part of the River Umeälven in Sweden, a typical north European catchment.



Take a survey on weather and climate services for hydropower 

The IMPREX team has designed a survey with the aim of collecting your viewpoint on the need for and the value of weather and climate services for the hydropower sector in Europe and internationally. The purpose is to help us to improve current forecast products and enhance their usefulness.

Filling in the questionnaire will only take about 10 minutes of your time but will be extremely valuable for the IMPREX project.

All answers will be treated confidentially and anonymously.

Thank you in advance,
The IMPREX WP 8 group

To participate in the survey please contact Andrea Castelletti andrea.castelletti@polimi.it