Chart of the week | BFG: Big Frequency Game

Since last Friday’s (9 August’s) power blackout there has been considerable interest in how National Grid Electricity System Operator (ESO) balances power demand and supply. Terms such as frequency, rate of change of frequency (RoCoF) and inertia have all gained in currency.

This Chart of the Week shows the distribution of frequency on the British electricity transmission system from 2014 to 2018. It aims to show the spread of frequency distribution away from the standard 50Hz and towards the allowed operational boundaries as the years go on, based on second-by-second data.

To keep reading, please log in to your account

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

Related thinking

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...

Business supply and services

SME’s interest in renewables driven by corporates

Despite the challenging year for businesses, we recorded growing interest in renewable electricity amongst businesses and Third Party Intermediaries (TPIs) according to our TPI Satisfaction Survey for 2020. This has been a focus for Industrial and Commercial's (I&Cs) over the last two years driven by corporate social responsibility goals, particularly...

Low carbon generation

Australian Chart of the week | 3 2 1… fight: VRE and price cannibalisation in NEM

In the last decade, the rapid decline in deployment cost of variable renewable energy (VRE) generation capacity has given renewables an advantage over fossil fuels for new builds as highlighted in ‘Renewable Power Generation Costs in 2020’ report from the International Renewable Energy Agency (IRENA). In the report, Australia has...

Low carbon generation

Australian Chart of the week | VRE pays more as PFR helps reduce coal FCAS costs

In our previous ‘Chart of the week’ in November 2020, we reviewed the increasing percentage of causer pays cost that solar generators bear due to their generation profiles and how this results in them paying significantly more of the causer pays cost as a ratio of the generation they provide. More than...

Regulation and policy

The outlook for private wire business models

Interest in private wire arrangements has grown in recent years, with the benefits of network and policy cost avoidance becoming a key incentive for generators to look at this development approach. In this Chart of the Week, we look at the expected evolution of cost avoidance over the next five...

Low carbon generation

Price trends for Renewables Gas Guarantees of Origins

In May 2021 we published the findings from our latest quarterly Green Certificates Survey. The survey is designed to provide greater market transparency for Renewable Energy Guarantees of Origin (REGO), Continental Guarantees of Origin (GoOs) and Renewable Gas Guarantees of Origin (RGGO) certificate markets. It provides aggregated views on certificate...

Low carbon generation

Australian Chart of the week | If I should stay, I’ll only be in your way: coal and the transition

Events in Queensland on 25 May 2021 tested the resilience of the Queensland demand/supply balance with 3GW of coal generation suddenly coming offline due to a loss of generation at the Callide power station. According to AEMO’s preliminary report – released on 1 June 2021 – on the event, the outage also...

Low carbon generation

Australian Chart of the week | A view of captured prices by technology in New South Wales

This Chart of the week examines the historical captured prices of selected technologies within NSW for the last 10 years. Figure 1 shows the historical rolling monthly average of captured prices of various technologies within New South Wales against the monthly generation of variable renewable resources including small scale rooftop....