The very fact that The Economist’s UK Energy 2014 event was titled “Will the lights stay on?” shows how we are all grappling with a more complex energy picture than ten years ago, when we were self-sufficient in gas and before tough targets for the UK to meet 15% of its energy demand from renewables by 2020 came into force.
Maintaining Britain’s high levels of security of supply has become far more challenging. In 2009 Ofgem found that Britain faced a tough challenge in maintaining secure supplies, thanks to the unprecedented combination of the global financial crisis, tough environmental targets, increasing gas dependency and the closure of ageing power stations.
Up to 12 GW gigawatts of old fossil fuel plant facilities will have to close by the end of 2015 to comply with European legislation for cleaner power stations. The majority of these stations have now been shut down. Around £110bn of investment would be needed by 2020 to upgrade and replace energy infrastructure. In addition, more than £50bn must be invested in upgrading power and gas networks up to 2021, so Britain can adapt to a low-carbon economy where smart meters, household power generation kits and electric vehicles all become more common.
Since then, the UK’s own gas supplies have declined further while bills and concerns over security of supply have increased. The surplus of electricity generation capacity compared with peak demand in the market is also expected to fall to its lowest level in winter 2015/16.
However, our latest analysis on security of electricity supplies shows that the probability of customers being cut off because of supply shortfalls has reduced. This is due to new tools that Ofgem has approved for National Grid to use so it can manage tighter supply and demand.
National Grid, a major British utility company, can now agree new contracts with power stations to provide extra reserve power when needed. The company will also carry out further tenders for large businesses to reduce electricity use at times of high demand, in exchange for a payment. These tools will give National Grid the ability to cope with tighter margins and to reduce the risk of interruptions to customers’ supplies.
In the medium to long term the government has also made major reforms to the wholesale electricity market to attract the investment needed. The capacity mechanism should help ensure there is enough generation to meet demand from 2018. A carbon price floor will provide a stronger incentive to invest in low-carbon generation, and we’ll also see contracts for difference to support these generators -- through these the generators will receive a top-up payment if the wholesale price is lower than an agreed ‘strike price’. However, if wholesale prices exceed the strike price they will have to pay back the difference.
While no system can ever give a 100% guarantee, the industry has the right levers to help keep the lights on for householders. But it must be vigilant at all times.
The views and opinions expressed in this article are those of the authors and do not necessarily reflect the views of The Economist Intelligence Unit Limited (EIU) or any other member of The Economist Group. The Economist Group (including the EIU) cannot accept any responsibility or liability for reliance by any person on this article or any of the information, opinions or conclusions set out in the article.