Loose gas creating tight margins in the power market
Gas and power prices are 10 to 20% lower since the start of October falling heavily in recent weeks.
Gas has led the way, particularly in the balance of winter contracts. These falls have come partly due to the very high levels of storage but also because of all the spare capacity that could be called upon if required. As a result, power prices have fallen due to the lower fuel cost.
LNG has been the main game changer with the deluge of tankers flooding in to Europe over the last year. Increased export capacity in the US and Russia has led to the increase in extra imports to Europe. It is also a symptom of the global oversupply in the worldwide market place. The liquid commodity markets and high import capacity make the UK an ideal location to offload any excess supply. LNG terminals are currently operating at 75% of their capacity, with all the extra gas being sold into the NBP pushing prices lower.
LNG imports graph
European imports have been virtually non-existent throughout the winter but more gas could be attracted through these pipes. There is a potential capacity of 94 MCM/d to come over the BBL and the Interconnector. To start attracting this gas the premium over TTF would firstly have to rise above the NBP entry charge of 1.56p/th and then cover the cost of using the pipelines. This means that if prices increase their premium over the continent to more than 2p/th additional gas will start coming to Britain.
Given the competition between supply sources, storage just cannot make it onto the grid, even on higher demand days, and this capacity overhang is weighing on prices.
Gas spare capacity graph
However, the falls in prices for power have been less substantial and purely driven by the falling cost of fuel. Fundamentally the UK grid is seeing some of its tightest conditions in years. With nearly 3GW of coal capacity having retired in the last 12 months. The remaining coal units are now running as baseload and all flexibility is coming from gas. There remains spare capacity but this is the least efficient or most costly plant.
On windless, cold days we are seeing some stress on the system. Currently Monday, 18 November, has a negative margin with 300MW still required to meet anticipated demand. This has pushed power prices to their highest since February at £54.50MWh.
On Wednesday evening we saw the highest demand of the winter so far, of 45.2 GW. The above chart shows where generation was coming from at the peak on the left, with remaining output available for Monday on the right. While this shows the potential generation that could come on at the current price levels, it isn’t expected to on Monday, hence the negative margin.
So far Monday’s price reaction has been relatively muted, but it has occurred at a time when the gas systems oversupply is weighing heavily on the whole energy market. If it was happening amidst different market conditions the price outlook would be very different.
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