What is it about?

Individual solar farms may theoretically threaten the stability of the electricity grid. This study considers all UK solar farms together. When one is generating at maximum capacity, its neighbours may not be. This lessens the overall impact on the national transmission system.

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Why is it important?

Variability of irradiation and therefore of electrical yield from a specific solar farm is less if viewed in aggregate with surrounding installations. If this regularizing effect is disregarded, unnecessary grid restrictions may be put in place.


This research offers an alternative method of investigating grid stresses. The influence of the various sizes of solar farms and their geographical dispersal is examined. We have demonstrated that the current distribution of solar farms in the UK has a smoothing effect on variability in output. This is useful from the point of view of ensuring the National Grid remains stable.

Miss Diane Palmer
Loughborough University

Read the Original

This page is a summary of: Comparison of solar radiation and PV generation variability: system dispersion in the UK , IET Renewable Power Generation, April 2017, the Institution of Engineering and Technology (the IET), DOI: 10.1049/iet-rpg.2016.0768.
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