Ofgem suspects UK energy groups of manipulating wholesale prices
Concerns that companies are providing false information about generating capacity
Electricity generating companies have been threatened with fines and criminal prosecution if they are caught trying to manipulate the wholesale energy market after suspicious activities were reported to the industry regulator.
The warning relates to concerns that UK power companies could be trying to artificially inflate the selling price of their electricity by providing false information about the generating capacity they have available.
In a letter to companies this week, seen by the Financial Times, Ofgem said concerns had “been raised with us in respect of certain behaviours that may be taking place in the market”.
These concerns related to the accuracy of notifications that companies are required to make to National Grid, the system operator, and the rest of the market about available capacity and planned output.
Companies could potentially game the system by under-reporting their intended generation on a particular day to lower the market’s expectations for supply. This would push up prices, to the benefit of the company when it subsequently delivered more electricity than anticipated.
The potential rewards for such manipulation are heightened during the winter months, when energy demand is at its highest and special payments are available from National Grid to secure extra capacity when supplies run low.
Prices have risen as high as £1,500 per megawatt hour at peak times in recent weeks, compared with average wholesale prices below £50 for much of the year. One operator was paid as much as £2,500 per MWh during a supply crunch last year.
Spikes of this kind can greatly increase the profits of power generators and cause big gains or losses among energy traders; ultimately higher wholesale prices feed through to the bills paid by households and businesses.
People familiar with Ofgem’s thinking said the letter was intended as a “shot across the bows” of the industry, with the threat of a formal investigation if further signs of market abuse arise.
“Ofgem takes its responsibilities with respect to market conduct very seriously and monitors the market to probe potential breaches,” the letter said, highlighting the regulator’s power to “publicly censure, place unlimited financial penalties or institute criminal prosecutions”.
It marks the second time in just over a year that Ofgem has written such a letter. Whereas the previous warning in September 2015 covered a range of potential abuses, including manipulation by traders, this week’s is focused specifically on information disclosure by power generators.
Electricity markets have been especially volatile in recent weeks because of the temporary shutdown of several French nuclear reactors for safety checks and damage to power cables beneath the English channel — both of which have disrupted the flow of electricity from the continent which usually supplements domestic generating capacity.
Ofgem’s letter promises to further intensify political scrutiny of the power industry, which has also come under attack over its conduct in the retail market.
Ofgem this week launched a league table to name and shame suppliers with the highest proportion of consumers on expensive standard tariffs, less than a month after Philip Hammond, chancellor, said the government would “look carefully” at whether the retail market was “functioning fairly”.