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About Task 25

The ultimate objective of Task 25 is to provide information to facilitate the highest economically feasible wind energy penetration within electricity power systems worldwide. This task supports this goal by analyzing and further developing the methodology to assess the impact of wind power on power systems

Task 25 analyzes and develops methodologies that assess the impact of variable generation on power and energy systems. This information facilitates economically feasible wind energy penetration in electricity systems worldwide. Task 25 summarizes results from participating countries and formulates best practice recommendations for system impact and integration studies.

Task 25 started in 2006 and is now in its sixth term (2021-2024). As the work has evolved from wind integration studies to cover both wind and solar energy, and both electricity and energy systems, the name of Task 25 was changed from Design and Operation of Power Systems with Large Amounts of Wind Power to Design and Operation of Energy Systems with Large Amounts of Variable Generationin 2018.

The international forum has been formed or exchange of experience gained and studies conducted. The case studies address different aspects of power system operation and design:

  1. Impacts of variability and uncertainty on cycling losses of generators, balancing and reserve requirements
  2. Capacity value of wind power
  3. Efficient use of existing transmission capacity and requirements for new network investments
  4. System stability issues
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Task 25 Roadmap

2006-2008

Phase l

State-of-the art Comparison of studies

2009-2011

Phase ll

Best practice of Methodology and Experience

2012-2014

Phase lll

Recommended Practices RP16
Fact sheets
Hourly time series, smoothing impact
Higher share studies

2015-2017

Phase lV

Wind/PV
RP Ed.2
Energy System Coupling

2018-2020

Phase V

Instant 100% wind&solar challenges in Energy Systems

2021-2024

Phase Vl

100% wind&solar events with Smart Energy Integration

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