- 3:31 pm
- This is a subject in which I might have more than a passing interest.
- I beg to move,That this House recognises the unique challenges posed by lithium-ion fires in battery energy storage sites; and calls on the Government to bring forward enforceable national regulations for their design and construction.I have asked for this debate in order to highlight important issues associated with lithium-ion batteries when deployed at grid scale. These installations are known as battery energy storage systems, or BESSs. In particular, I am calling for clear national regulations that could be applied in the same way in every part of the UK. We need legislation, and I hope that this debate will push the Government further along the road to passing it.The UK has set a target to achieve net zero emissions by 2050. To achieve that, many wind and solar farms have been constructed and permissions are being sought for many more. I fully support the drive towards renewable energy; the enhanced regulation that I am suggesting today is intended to secure the industry’s future, not to create more obstacles. I think it is perfectly possible to draw up regulations that will not stand in the way of BESS roll-out, and which in the long term could actually save the industry from a wholly avoidable setback in the event of an accident.BESSs solve the classic question of what to do when the sun don’t shine and the wind don’t blow. They provide a number of highly useful functions, including load balancing, peak shaving and energy arbitrage. Above all, they make it practical to meet a much larger percentage of our national energy needs from renewables. However, every energy system carries some kind of risk, and most BESSs currently use lithium-ion battery technology. In the event of an accident—and sooner or later there are always accidents—lithium-ion batteries catch fire in a different way from other materials, in a process known as thermal runaway. It is important to note that most BESSs now rely on lithium iron phosphate or LFP batteries. This chemistry is much more stable than lithium nickel manganese cobalt oxide or NMC cells, which are common in consumer uses. That means fewer incidents, but those incidents can still be dangerous. In the future, there will undoubtedly be other chemistries, so we need to leave space for innovation.Thermal runaway generates very high temperatures and requires different firefighting methods. It is usually best not to try to put out the fire, but rather to control the spread. Firefighters also have to contend with severely toxic gas emissions, the risk of an explosion, soil contamination and damage to watercourses. To repeat, I am in no way suggesting that battery energy storage systems are inherently unsafe. The risks they entail may be different from those of traditional systems, but they are perfectly controllable.
- Does the hon. Gentleman share my concern that the location of many of these sites are in rural areas, which are often served primarily by retained firefighters? They are a long way from where specialist firefighting resources would come from, and that does not seem to be taken into account fully in the planning process.
- I appreciate the right hon. Gentleman’s intervention. I agree that such sites can be in remote locations where there are fewer resources. As I will say later in my remarks, fire officer training is very much part of what I am recommending.There is a strong case for mandating water-based suppression systems, off-gas detection, ventilation systems and thermal runaway mitigation as design conditions. Unfortunately, that is far from the case today. The guidelines for planning approval are imprecise and vary across the devolved nations. Currently, the burden of responsibility falls on individual local authority planning officers who have no specific training or background in lithium-ion technology—and why on earth would they?For reasons that are hard to understand—perhaps the Minister can explain—fire and rescue services have not been made statutory consultees for planning applications. The current guidance states that applicants are “encouraged to engage” rather than required to do so, but even compulsory consultation is not enough by itself because the fire services themselves do not always have the expertise. Within the last fortnight, Henry Griffin, Suffolk’s deputy chief fire officer asked for fire services to be given new powers, saying:“I’d like to see a power that is akin to a regulatory order like those for a commercial property, where we would have the power to enforce safety measures on those sites.”He explained that the fire service is currently just a “contributing partner”, able to give “direction and professional advice”, but not necessarily to require what it might like.The result is inconsistency, which is destructive both of public trust and of the success of the industry. In my own constituency of Horsham, the local planning authority has rejected a BESS application, while a similar site, just half a mile away, across the border in Mid Sussex, has won approval. Such inconsistencies show alarming parallels with Grenfell. The Grenfell disaster was the end result of many failings by both individuals and companies, but at heart it was a failure of regulation. The rules left things wide open for exploitation by cost-cutting developers, which is exactly what happened. Just as with lithium-ion batteries, a new technology—in that case cladding—was being used at scale for the first time, without proper understanding of the risks. The time to act is now because the number of BESS applications is expanding exponentially.
- I commend the hon. Gentleman for securing the debate. He is right to highlight the issues around lithium-ion batteries and thermal runaway; we are all reminded of explosions and fires in Liverpool in 2019 and in Kilwinning, in Scotland, in 2025. He referred to the need for legislation for the whole of the United Kingdom of Great Britain and Northern Ireland, but that needs to start here. Is it his intention to ask the Minister to confirm in her response that that will happen, so that the legislation can then fan out to Scotland, Northern Ireland and Wales?
- The hon. Gentleman is better acquainted than I am with the way that devolution works, but yes, I hope that the Minister will be able to set out whatever course of action is required to get to that point.It is essential that we build battery energy storage sites to proper safety standards so that we do not find ourselves facing the need for a massively more expensive retrofit, with consequences for the entire energy network.What accidents have there been so far? In September 2020, a fire at a BESS site in Liverpool created a significant blast and took 59 hours to extinguish. Merseyside Fire and Rescue Service said that the blaze on Carnegie Road“appears to be the first significant fire of its type to occur within the UK”.However, this was only a small BESS, with just four containers and a modest 20 MWh output in total.
- In common with the hon. Gentleman, I welcome renewable energy. Safety is hugely important. In my constituency there are lots of battery sites that are being placed in pockets around beautiful little villages because there are connections to the national grid. Because of the potential fire hazards and possible toxic run-off into local rivers, does the hon. Gentleman agree that we should prioritise brownfield sites as opposed to such pockets around pretty little villages?
- The issue of site choice is closely associated with grid capacity, so that is a factor. That is why some of these sites are ending up in otherwise somewhat improbable and very un-industrial settings. Rules around the pollution of watercourses are one of the most important measures to be brought in, and a wider discussion of land use is going on that could help with that.There was another accident in February this year. Essex firefighters dealt with a fire at a BESS project that was still under construction and therefore not even operating at full power. The most serious incident internationally, which caused serious injury, was in McMicken, Arizona in 2019. As a result, America, along with Germany, has some of the most effective BESS protocols in the world, which I think could be copied.Overall, BESS fires are high risk in their impact but low in incidence. The Faraday Institution estimates that only one in 40 million battery cells will experience failure resulting in fire. That is an exceptionally high standard of safety, but there are millions of batteries, so there will be accidents—and, of course, in a BESS scenario one battery can trigger another. Grenfell was one fire in one building, yet the ramifications continue today. It has left us with the huge cost of retrofitting large numbers of high-rise buildings across the UK built with similar cladding methods. Even a single failure can therefore undermine an entire industry if it turns out to be the result of a systemic mistake in design.The UK’s regulatory approach to BESS safety relies on performance-based regulations such as the Regulatory Reform (Fire Safety) Order 2005 and the Building Regulations 2010. They place the responsibility on the responsible person—the site owner—to ensure that adequate safety measures are in place, but they lack specific provisions tailored to BESSs. Too much reliance is being placed on individual owners to mark their own homework. The National Fire Chiefs Council provides guidance for the fire and rescue services, but that needs to be more comprehensive and updated constantly in line with changes in technology if it is to serve a proper regulatory purpose. On fire response regulation, recent changes to the International Electrotechnical Commission standards suggest a global shift towards mandatory water-based suppression and proactive risk mitigation, but that has not yet been echoed in UK law.
- Several hon. Members rose—
- Members will be able to see how many are standing. I do not intend to put a formal time limit on, but if Members can keep their contributions below five minutes, everybody will just about squeeze in.
- 3:46 pm
- First of all, I support the fact that there is a debate on this issue, and I support some of the points that the hon. Member for Horsham (John Milne) has just made. It is clear that technology is moving fast, and when it does, it is essential that public authorities move even faster so that we feel properly secure and protected. I do not think we are quite there yet, and it is clear that there are different patterns of operation by public authorities in different parts of the country. We need an overall pattern.I also agree that we do not want to turn our back on this new technology. It is very important that we continue to transform our energy provision across the country as a whole, but the fact of the matter is that the fires that occur from time to time pose serious problems for fire authorities. Those authorities should take a central role in any national conversation about this matter. Guidance from the National Fire Chiefs Council says that at least 1,900 litres of water per minute are needed to try to control a fire once it gets started. That is an incredible amount of water to deliver, and many sites simply cannot deliver it, although they seem to be making progress in some cases.The Government have said that there have not been many fires, but there have been quite a few. The one in Liverpool that the hon. Member for Horsham mentioned burned for a substantial period of time—59 hours—and there was one in California that lasted for five days. There have been three other fires in the UK this year, and we are only halfway through the year. When the fire authorities are trying to eliminate a fire, it is obviously complex, but it can lead to pollutants going into the ground and into watercourses, which itself is very dangerous. It has been shown that in Liverpool, when the smoke from the fire was sprayed by water, it produced hydrochloric acid that was distributed through the community—obviously, not a very healthy thing to have. Additionally, toxic fumes were created, which travelled a long way.
- Will the hon. Member give way?
- I will, but quickly.
- The hon. Member is making an excellent speech. He refers to the pollution of watercourses; in my constituency, the salmon fishing industry is hugely important to tourism and the local economy, so that could be a disaster waiting to happen.
- I thank the hon. Member for his intervention, and take his point entirely.Some authorities have suggested that a two-mile radius is needed if a fire starts. People need to keep their windows and doors closed while the fumes are in the air, as there is a risk of children, elderly people and others breathing them in. In my constituency, there are two applications in place, both in beautiful parts of Yorkshire. In Heath, which is regarded as one of the crown jewels of Wakefield, there is a proposal for a large battery storage provision. Hundreds of people objected to it. The chief fire officer said:“The risks of vapour cloud, thermal runaway and explosion are unfortunately very real and are becoming more common as we see an increase”in battery storage. He talks about choices being given to the fire authorities, in whether they allow the fire to just burn itself out, with the risk of pollution of the atmosphere, or whether they attempt to tackle it. To control a fire at the site in Heath would require millions of litres of water in a 24-hour period. It is almost impossible to deliver that level of water and, anyway, what happens to the millions of litres of water used to try to eliminate such a fire?There is a second proposal in Old Snydale, a beautiful village in my constituency. It is a one-road village, and the people who live there work hard or have worked hard. The proposed site will be almost next to the village, and there is no road access or egress. I do not know how the fire engines and other emergency services would get in. The proposal is completely inappropriate, but the two communities of Heath and Old Snydale are sitting there with planning applications in place and the fire officers expressing great worries about the risk of potential fire and how they will control it. Without national guidance and proper regulations that are sensitive to the prospect of fires, our local planning officers are having to reinvent the wheel, as are other planning officers in other authorities. I support the points made by the hon. Member for Horsham (John Milne) in introducing this debate.
- 3:51 pm
- I congratulate the hon. Member for Horsham (John Milne) not just on securing this debate, but on giving it such a wide-ranging and thoroughly comprehensive introduction. I am sure that many Members would have mentioned many of the areas he discussed in their own way. Madam Deputy Speaker, you and I are very good friends, and I know that you have been concerned about battery storage plants near the River Test and potential runaway fires that may lead to pollutants going into the river. As you are in your place, you cannot comment on that, so I thought it important to get that on the record.The hon. Member for Normanton and Hemsworth (Jon Trickett) was focusing on some of the planning issues, and that is where I want to go, too. When we look at this debate overall, what we are talking about is a lack of statutory guidance. I want to get on the record immediately that this is not a debate of “Forget net zero and forget about renewables.” That is not the debate, and we are not deniers along that road, but there are serious concerns. The leader of my party has raised those concerns and immediately been accused of being anti net zero. We have to take the concerns seriously, because, as the hon. Member for Horsham outlined, there are changes, slowly but surely, in the materials being used. Nickel manganese, for example, has a vaporisation point of 900ºC. These fires can burn easily over 1,000ºC. I want to focus my attention on the fallout.I had a meeting with some soil scientists, among others, from the University of Leeds at a research facility in my constituency. They are involved in all aspects of farming. I asked about research into potential contamination and fallout and what it could mean for soils if there was a fire. They said no such research had really been done, and I think they had a couple of PhD ideas appear from that. It showed that that work has not been done.