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


Monday afternoon
25 September 2023
13:00 – 17:30


The VRE tutorial will be held at the workshop venue, the Technical University of Denmark in Room S16.

Please come to the main registration desk to collect your conference badge before going to the tutorial.


Tutorial Lecturers

Debra Lew

Dr. Thomas Ackermann (Energynautics, Germany)

Nicholas Miller
(HickoryLedge, USA)

Anders Bavnhøj Hansen
(Energinet, Denmark)


Preliminary Agenda

12:30 – 13:00


13:00 – 14:00

Lecture 1 (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 &  Short Break (15 min)

14:00 – 15:00

Lecture 2 (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 &  Short Break (15 min)

15:00 – 15:30

Coffee Break

15:30 – 16:30

Lecture 3 | Virtual (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 &  Short Break (15 min)

16:30 – 17:30

Lecture 4 (45 min.)
Developing robust scenarios for strategic planning of the energy system transition
Anders Bavnhøj Hansen (Energinet, Denmark)

Energinet has for many years used energy scenarios system perspective studies for strategic planning of the system development. The scenarios has also been used to identify R&D focus areas for a robust transition of the energy system. Scenarios are found to be essential for robust planning and to identify key focus areas for R&D towards a carbon neutral energy system.

In the presentation historical experience is discussed. The last years significant change in global boundary conditions has highlighted the need for robust scenarios covering potential gamechangers. Energinet’s latest System Perspective study will be presented, also available at the website www.energinet.dk/sys2035

Discussion & Closing (15 min)


Participation Fees & Registration

  • The VRE Tutorial in not included in the general participation fee of the 22nd Wind & Solar Integration Workshop.
  • 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.
  • The following table shows both the gross prices (incl. 25% Danish V.A.T. | marked in bold) as well as the net prices (excl. V.A.T.).



Early Bird

24 Jul 2023

470.00 €
376.00 €

Mid Registration

24 Aug 2023

520.00 €
416.00 €

Late Registration

24 Sept 2022

595.00 €
476.00 €

On-site Registration

after 24 Sept 2023

645.00 €
516.00 €


360.00 €
288.00 €

Please register via the online registration platform:

Link to Registration Platform


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.

The VRE Tutorial will have an introductory level