Chart of the week | Cha-Cha Slide: COVID-19 & falling levels of inertia

The level of inertia on the system is a key contributor to electricity system stability. Inertia is an attribute of the system related to the energy stored in the rotating motors of synchronous generators. It prevents system frequency from falling too quickly after a frequency disturbance (e.g. a generator trip). This is due to inertia stored in these rotating motors provides resistance to system changes. It is effectively free frequency response the ESO can count on in the case of a sudden fall in frequency.

In this week’s ‘Chart of the week’, Joe discusses how changes in demand due to COVID-19 are impacting this.

To keep reading, please log in to your account or sign up for free

Alternatively, please sign up to receive free market insight online and direct to your inbox

Related thinking

Home supply and services

Domestic switching falls as the savings gap is squeezed

With day-ahead gas reaching an all-time high of 187.50p/th as of 15 September, it has been a record-breaking summer for wholesale energy prices. This Chart of the Week explores the impact these high prices are having on domestic tariffs and consumer switching behaviour.

Low carbon generation

A podium finish: ROC banking in CP19

The Renewables Obligation (RO) Compliance Period (CP) 19 (2020-21) has been unusual in the scheme’s history in light of the impact of the COVID-19 pandemic. As we are in the so-called “compliance season” for CP19, we reflect on the last year and the importance that Renewable Obligation Certificates (ROC) “banking”...

Energy storage and flexibility

Grid works hard for the money: an annual look back at BSUoS

This weeks Chart of the Week takes a look at the costs incurred from balancing the electricity system over the last 12 months. The cost of all the actions and day-to-day operation of the electricity system are recovered through Balancing Services Use of System (BSUoS) charges. This changes in each...

Commercial and market outlook

Chart of the week | Green recovery in Italy?

Issue 229 of ‘Chart of the week’ showcases Italian prime minister Mario Draghi’s economic recovery plan which was presented to the country’s parliament. The appointment of Mario Draghi, former head of the European Central Bank, as prime minister on 13 February has provided the country with a unique opportunity to...

Low carbon generation

Chart of the week | Higher or lower? Transitioning to the UK ETS

Carbon prices, especially the EU Emission Trading System (ETS), have experienced considerable volatility over the last year, influenced first by COVID-19, which saw prices crash, and more recently by expectations of increased EU climate ambitions, driving prices to record highs. In this Chart of the Week, we consider the potential...

Low carbon generation

Chart of the week | To 6 GW… and beyond! Offshore wind in the CfD scheme

The role of Contracts for Difference (CfD) generators in the electricity market continues to expand and Allocation Round 4 (AR4) to be held later in 2021 will expand this role further. By the end of 2020, installed generating capacity supported by the CfD scheme already totalled 5.2GW, providing Great Britain...

Commercial and market outlook

Chart of the week | UK carbon emissions were down 10% in 2020

BEIS published its provisional 2020 UK greenhouse gas emissions figures on 25 March. In this 'Chart of the week', we consider the significant impact of COVID-19 and the resulting lockdowns in the UK on carbon emissions last year. Carbon emissions in the UK are provisionally estimated to have fallen by...

Low carbon generation

Chart of the week | The GB renewables pipeline: Snakes and Ladders

Through our Renewables Pipeline Tracker (RPT) service, we have been reporting on and analysing the growing renewables pipeline in GB for the past 18 months. This week’s ‘Chart of the week’ looks at the latest numbers in the pipeline and the key trends impacting renewable assets. RPT research is gathered through a...