In our monitoring of the wholesale energy market for gas and electricity, we collect and analyse a large range of data. Our wholesale indicators give a snapshot of this monitoring. They are derived from our monitoring framework which underpins our ongoing monitoring and annual assessment of the wholesale energy market in Great Britain. You can view the assessments in the related publications section below.
Our interactive wholesale market indicators
Select from the below to view the indicators in detail and for an overview of our monitoring themes.
If you have feedback on the indicators, please contact us.
Wholesale highlights July 2019
- Wholesale energy prices decreased and were less volatile in Q1 2019 compared to both the previous quearter (Q4 2018) and Q1 2017 and 2018. Please refer to the Wholesale Price Trends and Investment and Sustainability section below for further detail.
- GB continued to receive gas from a diverse range of sources. Whilst the majority of gas continued to come from Norway and the UKCS we saw a significant increase in LNG deliveries to GB terminals throughout Q4 2018, which continued throughout Q1 2019. Please refer to Security of Supply section below for further detail.
- Coal’s share of the electricity generation mix in Q1 2019 remains very low by historical standards and fell significantly from Q4 2018. The share of gas generation increased to 35.8% in Q1 2019 (higher than Q4 and Q3 2018, but lower than Q1 2018). Renewables was almost 30% of total GB generation in Q1 2019 . There was an increase in the share of net imports from interconnectors too. Please refer to Security of Supply section for further detail.
- There was slightly lower liquidity in both gas and electricity trading in Q1 2019 compared with the previous quarter. Churn fell for both electricity and gas in Q1 2019 compared to the last three quarters, but it was higher than Q1 2018. Electricity liquidity remains significantly below the level for gas. Please refert to Access and Liquidity section for further detail.
Wholesale price trends
The wholesale price of gas and electricity are key market outcomes that have a significant impact on retail bills. Understanding how and why wholesale prices have changed help us understand why retail bills have changed.
Security of supply
Ensuring there is sufficient gas or electricity to meet demand is a key outcome of the energy market. It provides consumers with certainty they can get heat and power when they require it, and helps drive economic activity.
Access and liquidity
Highly liquid markets imply developed markets where it is easy to buy and sell energy at reliable prices. Liquid markets should have sufficient numbers of participants willing to buy and sell so that prices are not easily moved by a few small trades.
The amount of competition in the energy market can have a strong impact on final wholesale prices. The more pressures there are from companies competing with one another, the more likely the wholesale market will reflect the true economic costs to supply energy.
Investment and sustainability
A more sustainable energy market has significant impacts on levels of pollution and greenhouse gas emissions. Investment is also essential to ensure that the market can meet the demands of current and future consumers.
Methodology and data sources
We have selected this range of indicators to support general understanding of market outcomes, to provide a picture of the market where it is not produced elsewhere, or where there is scope for us to set a clear methodology for the data.
Our data comes from sources that are either publicly available, provided by third parties or from Ofgem information requests. Specific sources and relevant dates are listed with each indicator. We are grateful to third parties for allowing us to reproduce their data.
We will review the indicators periodically to ensure they continue to help promote transparency and understanding of the wholesale energy market.
These market indicators and data are not intended for use or to be relied on for any commercial purposes. View copyright and disclaimer