14Solar PV in the 100% RES Power System

Operating agents


The main goal of Task 14 is to promote the use of grid-connected PV as an important source in electric power systems at the higher penetration levels that may require additional efforts to integrate dispersed generators. The aim of these efforts is to reduce the technical barriers to achieving high penetration levels of distributed renewable systems.


Task 14 will focus on electricity grid configurations with a high penetration of RES, where PV constitutes the main RES. Although up to now no common definition of “high-penetration PV scenarios” exists, there is consensus amongst the parties developing this Task that a high penetration situation exists if additional efforts will be necessary to integrate the dispersed generators in an optimum manner.

Task 14 will analyze the issues related to the penetration of PV in electricity grids and establish penetration scenarios in order to guide discussions on respective technical challenges. Key aspects which influence this definition can include:

  1. characterization of the load (worst case, average, peak, load shapes, seasonal aspects…)
  2. AC output characteristics of PV (seasonal, daily, spatia)
  3. influence of the grid characteristics (e.g. grid topologies, impedances, etc.)


A certain number of distribution system integration-related issues are emerging first for PV systems, Task 14 will focus on working with utilities, industry, and other stakeholders to develop the technologies and methods to enable the widespread deployment of distributed, grid-connected PV technologies.

Task 14 aims to:

  1. develop and verify mainly technical requirements for PV systems and electric power systems to allow for high penetrations of PV systems interconnected with the grid
  2. discuss the active role of PV systems relating to energy management and system control of electricity grids.

Task 14's current phase began in 2018, ends in 2022 and activities are organized as follows

Task 14 Reports