VRE Tutorial: Lessons Learned from Grid Integration of Variable Renewable Energies

On Monday afternoon, 27 September 2021 (14:00 – 18:30 CEST), a tutorial will be held by international experts on “Lessons Learned from Grid Integration of VRE”.


Important Notes

The tutorial will be held virtual!
The tickets for the participation via Zoom are also available on the online registration platform.


Tutorial Lecturers

Debra Lew

Nicholas Miller
HickoryLedge, USA

Helge Urdal
Urdal Power Solutions, United Kingdom

Thomas Ackermann
Energynautics, Germany


Preliminary Agenda

14:00 – 15:00

Lecture 1 (45 min.)
Lessons learned from Grid Integration of VRE: Activities in 20 Countries
Thomas Ackermann (Energynautics, Germany)

Thomas Ackermann will share his experiences of 25 years of world-wide work in the area of grid integration of renewables and electric vehicles. The presentation will give an overview of challenges and lessons learned.

Discussion (15 min)

15:00 – 16:00

Lecture 2 (45 min.)
Lessons Learned from Grid Integration of VRE: Resource Adequacy and System Balancing
Debra Lew (ESIG, USA)

Variable renewable energy resources create challenges for utilities to meet resource adequacy requirements because VRE may not be coincident with system peak demand and VRE output during system peak periods varies inter-annually. We discuss how methods for determining resource adequacy may need to be modified to consider high penetrations of VRE. High penetrations of VRE can contribute significant variability and uncertainty to the system operators‘ responsibility of balancing the system. In this lecture, we cover many mitigation options for system balancing and considerations that each utility must undertake to determine what makes the most sense for their system.

Discussion (15 min)

16:00 – 16:30


16:30 – 17:30

Lecture 3 (45 min.)
Lessons Learned from Grid Integration of VRE:  Frequency Control and System Stability

Nicholas Miller (HickoryLedge, USA)

The dynamic performance of interconnected power systems, especially the transient response to grid disturbances, is substantially changed by the substitution of inverter-based variable renewable resources (IBVRE) for traditional synchronous generation. Ability to maintain frequency control following loss of major generation units or interconnectors is strongly influenced by reduced synchronous inertia and rapidly responding IBVRE. Transient stability, particularly first swing stability between importing and exporting systems can be radically altered by IBVRE. This lecture will explore lessons learned in large-scale integration studies, including opportunities to improve utilization of transmission infrastructure beyond levels possible today with predominantly synchronous generation.

Discussion (15 min)

17:30 – 18:30

Lecture 4 (45 min.)
Lessons Learned from Grid Integration of VRE: A Personal Perspective. GB Transmission.
Helge Urdal (Urdal Power Solutions, United Kingdom)

Helge Urdal will present a transmission perspective of desirable characteristics from power sources. He will share his own experiences related to obtaining these capabilities from 1970s up to 2020, including how in GB from a time of dominance of coal, via a first transition to gas and then how the move has been made on to relying on VRE, mainly wind. Helge will consider some of the system technical challenges in GB of the next 30 years, starting with Future Energy Scenarios, covering how new enhanced services from VRE will be in focus. Helge will also touch on choice of drivers / incentives, either mandating outcomes through Grid Codes or encouraging via Ancillary Services Markets or combinations of the two approaches.

Discussion (15 min)




  • The VRE Tutorial in not included in the general participation fee of the 20th Wind Integration Workshop.
  • In case you wish to book the tutorial without booking one of the conferences, please contact us at registration@integrationworkshops.org.
  • As the number of participants for the VRE Tutorial is limited, tickets are available on a first come, first served basis.
  • The Tutorial can be canceled if less than 7 participants register.
  • Prices for virtual participation are 260.00 € for regular participants during Early Bird Registration, 295.00 € during Mid Registration and 330.00 € during Late Registration excl. 19% VAT.  Students pay 120.00 € excl. 19% VAT. Get details on our Registration & Fees webpage.


About our Tutorials

In our tutorials, you have the opportunity to deepen your knowledge regarding crucial renewables topics in an intimate setting.

In intense presentations by specially invited experts you gain not only detailed knowledge but also a unique hands-on-experience.

Our tutorials have an introductory to intermediate level