Pricing data

The Single Electricity Market is the wholesale market on the island of Ireland where electricity generators and suppliers trade the power used by homes and businesses across the island of Ireland.  The price from the SEM makes up just over 50% of your final bill.

Our Market Monitoring Unit monitors the SEM, keeping track of prices and all the elements that come together to make up that price.  This includes wholesale fuel costs such as gas which is the predominant fuel used in conventional thermal electricity generation, and used to heat may homes with natural gas across NI.  We publish quarterly reports on market performance and keep an eye on market behaviour, acting where necessary.

Below shows a snapshot of the key market trends from the recent reports.  For more detail or copies of the full reports, please visit the MMU section of the SEM Committee website.

 

January 2021 - March 2021 (Q1)

The majority of electricity is traded in the day ahead market.  The graph below shows the daily average DAM price and volume in the market in Q1 2021.

 

The average daily price in the DAM was €69.98/MWh during the period, up from €50.97/MWh in Q4 2020, a 37.3% increase.  This is a 91.83% increase compared to the same period last year.

Higher market prices over the period were due to increased gas and carbon costs, coupled with lower forecasted wind on the system and several units being unavailable.  Lower prices continue to be linked to periods of high wind availability, with higher prices seen when wind availability is low.

Overall system demand across the quarter has generally remained above or close to the levels seen when compared to the same period last year.

 

October 2020 - December 2020 (Q4)

The graph below shows the daily average DAM price and volume in the market in Q4 2020

 

The average daily price in the DAM was €50.97/MWh during the period, up from €37.02/MWh in Q3 2020, a 37.7% increase.  This is a 10.54% increase compared to the same period last year.

Higher market prices over the period were due to increased gas prices and demand. 

Overall system demand across the quarter has generally remained above levels seen when compared to the same period last year.

 

 

July 2020 - 30 September 2020 (Q3)

The graph below shows the daily average DAM price and volume in the market in Q3 2020.

 

The average daily price in the DAM was €37.02/MWh during the period, up from €25.81/MWh in Q2 2020, a 43.4% increase.  This is a 20.7% decrease compared to the same period last year.

Lower market prices compared to the same period last year were due to a decrease in gas prices and increasing levels of forecasted wind.

Overall system demand across the quarter has generally remained at similar levels to those seen in the same period last year.