Caroline Lucas
Main Page: Caroline Lucas (Green Party - Brighton, Pavilion)Daylight Saving Bill
Caroline Lucas Excerpts(13 years, 11 months ago)
Commons ChamberRead Full debate Read Hansard Text
Rebecca Harris
My hon. Friend anticipates my next comment. Age UK and Saga have told me how much safer older people will feel, and how their fear of crime will be drastically reduced, with longer daylight hours. A lot of older people suffer a self-imposed curfew when it gets dark. Many will not even answer their door after 4 o’clock in the evening in winter. I am not promoting the Bill because it will help politicians in their canvassing in the evenings, but we all know from our experience of people who are very uncomfortable even coming to the front door.
I have received a large volume of letters from older people. I was quite upset to find that many older people feel lonely and that they cannot get out and enjoy social activities. Some people will not drive simply because of the glare on their glasses. One particularly upsetting letter said:
“Please will you make a point of being present to vote for the Lighter Later bill. Many old people living alone don’t see anybody for up to 18 hours once it gets dark &…lonely. I know as I am one of them! (Peter died last year).”
That is quite heartbreaking.
Finally, there is the clear potential to save energy—I am sure that other hon. Members will speak at great length on that because it is a pressing concern. The Bill has a clear potential to help us cut our fuel use. Because the majority of us get up after dawn for more than nine months of the year but few households go to sleep before dusk, we use artificial light every night of the year. An extra hour of free daylight each day would cut our electricity bills, and that would be offset only by extra electricity bills in the short winter months.
In the shoulder months either side of mid-winter, the peak demand for electricity occurs when dusk falls. We come home from school or work at half-past 5 and put on the lights, the kettle, the TV and computer games, because it is dark. If we move daylight ahead and allow people to do all those wonderful social activities and go to sports clubs and all the rest, we will flatten that peak demand, which will mean that our national grid will not need so much power on standby. We will save not only on what we use, but on the power we must keep on standby to meet peak demands. The Bill has the clear potential to reduce our electricity consumption at no cost whatever.
Caroline Lucas (Brighton, Pavilion) (Green)
That issue is very close to my heart. Does the hon. Lady agree that the Bill would lead to savings of nearly £180 million a year on household electricity bills? That would make a significant difference to fuel poverty, which affects so many of our constituents.
Rebecca Harris
Fuel poverty is another problem that we did not have at the time of the winter-only experiment of ’68 to ’71. That is another incredibly important reason why we need the Government to look again at the benefits and details of extending daylight hours. We could achieve the savings to which the hon. Lady refers at no cost.
Extensive research by the Cambridge university department for engineering and National Grid does not dispute that we could cut our electricity consumption by at least 0.5%, which is equivalent to a wind farm of 200 very expensively produced wind turbines. I accept that that is a fraction of the CO2 reduction to which we are committed, but it is none the less significant, and it can be done without the purchase of a single smart meter or a single square foot of insulation.
Caroline Lucas (Brighton, Pavilion) (Green)
First, I congratulate the hon. Member for Castle Point (Rebecca Harris) on proposing the Bill and refusing to be discouraged by the failure of previous attempts in the House to introduce daylight saving time. I am extremely glad that she has proposed the Bill, because the urgency of the problems of climate change and fuel poverty means that the arguments for bringing the nation’s clocks into closer alignment with the hours of daylight are stronger than ever. Moving our clocks forward by an extra hour throughout the year would bring a range of benefits, as we have heard, but I would like to draw particular attention, again, to the substantial reductions in energy consumption and carbon emissions that would result from the simple and effective measures in the Bill.
Daylight saving time would cut consumption, particularly of domestic fuel, in a number of ways. First, it would lower the demand for electricity for lighting, Secondly, it would smooth out fluctuations in demand, particularly in the two daily peaks in the morning and in the afternoon, which reduce the efficiency of power generation. Thirdly, because there would be higher temperatures during the evening period of peak demand in the colder months of the year, there would be a lower demand for domestic heating.
Mr MacNeil
The hon. Lady is, as we would expect, making an argument based on the effect of a time change on carbon emissions. If evidence was to appear—empirical evidence rather than projections—from Indiana, for example, that it would cost more, would she change her mind?
Caroline Lucas
If it were to be proved that such a change would make carbon emissions worse, I would reconsider my position, but I think that is highly unlikely to happen. The hon. Gentleman keeps talking about empirical evidence, but the only way for us to get relevant empirical evidence is to pass this Bill now and have the cost-benefit trials that we are talking about.
Mr Reid
Surely, if we passed the Bill, we would be more active at the coldest hour of the day—the hour before dawn—and would therefore use more fuel for heating at that time. The Building Research Establishment investigated this and found that there would be an increase in domestic heating if the Bill were passed.
Caroline Lucas
That was an early intervention in my speech, and if the hon. Gentleman listens to the next bit, some of these questions will be answered, because I do not agree with his point.
On reducing demand for artificial lighting, about 13% of domestic electricity consumption and about 30% of electricity consumed by commercial and public buildings currently goes on lighting. An extra hour of evening daylight would reduce the need for domestic lighting as people arrived home from school or work. Recent research by the Policy Studies Institute shows that the effect of the proposed clock change would be to lower demand for domestic lighting by as much as 9%. In other words, the Bill would lead to household savings of nearly £180 million per year on electricity bills alone. A common argument—I expect this will be made, so I will pre-empt it—against daylight saving time is that any drop in demand for evening lighting will be cancelled by the need for extra lighting on darker mornings. That may be true during the winter months, when the days are shorter, but the Bill proposes an adjustment of clock time throughout the year, which means less need for artificial lighting in the evenings all year round.
Regarding commercial demand for evening lighting, it is more difficult to quantify the potential savings for offices, workplaces and public buildings, as patterns of lighting often vary widely from sector to sector, but again, the studies indicate that overall demand from commercial customers is also likely to be lower. That aspect must be subject to detailed research during the initial trial period proposed in the Bill, as it offers the greatest potential for a nationwide reduction in domestic carbon emissions.
My second point is closely related to the first. Daylight saving will cut carbon emissions from power generation because it will even out the daily peaks in demand for electricity. For power companies, the late afternoon peak period determines the maximum number of power stations that are required to be on stream to match consumer demand. Currently, the extra capacity required for that short period of peak demand comes from inefficient and carbon-intensive sources such as oil-fired stations and pump storage facilities or, as has been said, by imports from France, which can be an expensive alternative.
The introduction of daylight saving would reduce peak demand for electricity on winter evenings. During that famous 1968-71 experiment with retaining British summer time throughout the year, the evening peak was reduced by 3%. Research carried out by the university of Cambridge calculates that lighter evenings now would reduce peak demand by up to 4.3%. The electricity industry also acknowledges that a reduction in evening peak demand would reduce carbon emissions by avoiding the need to keep inefficient and polluting spare generating capacity on stream.
The university of Cambridge study calculated that a move to daylight saving would mean a drop in CO2 emissions from power stations, across the UK as a whole, of about 450,000 tonnes a year. That is the equivalent of taking off the roads about 200,000 cars. There would also be a significant reduction in power companies’ generating costs, both for resources and for the transmission and distribution infrastructure.
In addition to reducing demand for lighting, daylight saving also offers potential for reducing fuel costs and carbon emissions from heating. Domestic demand for heating is highest from November to February. The PSI study found that whereas there is little variation in average temperatures between 6 am and 8 am, when most people leave the house, temperatures tend to fall much more quickly in the late afternoon, around sunset, when people are arriving home from work or school.
Since the introduction of daylight saving will mean that it gets colder later, it is possible that households will be able to save money on their heating bills, while shrinking their carbon footprint. A small increase in fuel use for heating in offices and commercial and public buildings may be likely because of the earlier start to the day, but the resulting carbon emissions will be offset by reductions in domestic fuel use, so overall there is a clear reduction in carbon emissions.
Malcolm Bruce
Does the hon. Lady acknowledge that the fact that the temperature does not change much between 6 am and 8 am is because that is the coldest time of the day, and that is exactly the time when the cost of heating to compensate for the cold is at its highest, and that the energy consumption required at that time would be much higher under the changed rules than it is at present?
Caroline Lucas
No, I do not accept that, and I do not think that it is what the evidence suggests. One of the points that the right hon. Gentleman is making has more to do with the way in which we generate energy now and our spare capacity, rather than being a fundamental point to do with changing to daylight saving hours.
In all of the three areas that I have discussed—reducing demand for lighting, efficient management of peaks in demand, and reduced demand for heating—the greatest potential savings lie in household energy use. For this reason, I believe the Bill offers an easy and inexpensive means of combating fuel poverty. Many of us have constituents, often elderly ones, who struggle to pay their electricity bills and their heating bills. In Brighton and Hove, for example, more than 20,000 households, many of whom are my constituents, have been identified as fuel-poor—in other words, forced to spend over 10% of their income on energy bills.
I am not suggesting for a moment that the Bill will allow any of us to relax our efforts to eradicate fuel poverty, or to ignore our duty to take meaningful action on cutting carbon emissions. But the beauty of the Bill is that the action that it requires is simple, while the benefits that it will bring are profound.
Mr MacNeil
I hear the hon. Lady making an argument about what could/will/should/may happen. Can she point to an empirical example? I pointed to Indiana, where there was an increase in energy consumption of 1 to 4% and presumably, therefore, an increase in carbon, methane and so on. Where is the empirical study that she is talking about?
Caroline Lucas
The hon. Gentleman seems to be obsessed with Indiana. There may well be other reasons why the results in Indiana were shown to be what they were. As many people have said, we need to look at what the results would be in the United Kingdom. There is one way to find that out, which is to allow the Bill to progress to the next stage so we can establish that.
Dr Whiteford
I share the hon. Lady’s concerns about carbon emissions. It is important that we take that into account. I also share the concerns about fuel poverty. However, my fundamental concern is that pre-dawn temperatures are so much lower than temperatures towards the daylight hours that people will spend much more on fossil fuel heating for their homes, rather than going out at a slightly less cold time of day. They will have to use heating and lighting in far greater quantities in the middle of the night.
Caroline Lucas
We can trade statistics across the Floor of the House for a great many hours and not become very much the wiser. The points that the hon. Lady makes are serious ones, but the way to explore the matter further is precisely to allow the passage of the Bill and to have the cost-benefit analysis that it proposes.
Caroline Lucas
No, the hon. Gentleman has spoken a lot. [Interruption.] Oh, he is going to agree. In that case, I shall let him speak.
Mr MacNeil
Perhaps I have misled the hon. Lady!
Why reinvent the wheel? Why not look to other parts of the world where the change has taken place and avoid three years of misery and the inevitable change that the UK and Portugal have experienced before? I say to the good people of England and Scotland, let us make sure that we learn from elsewhere before we go through such misery, because, I must regretfully tell the hon. Lady, the evidence from elsewhere does not support the supposition and conjecture at all.
Caroline Lucas
I thank the hon. Gentleman, who just reminds me never to trust him again! My giving way was an aberration, and it will not happen again.
I return to the point that any impact analysis of the Bill’s proposed changes has to take place in the country and nations under discussion, not in another place with completely different variables that we cannot analyse or factor into our equations.
Charlie Elphicke
I congratulate the hon. Lady on her passion in setting about the Luddites who are against any change. Is not her argument bolstered empirically by the graph showing energy consumption on the last BST Monday and the first GMT Monday?
Caroline Lucas
I thank the hon. Gentleman for his remarks. Yes, indeed, there is plenty of empirical evidence to support our argument. As I say, however, the most important thing is to move the Bill forward so that, with the same figures on everybody’s laps, we can have that debate and make the same analysis.
In closing, I reiterate what others have said about how the Bill will also benefit tourism in the UK. My constituency owes a great deal of its prosperity to tourism, with about £690 million entering the Brighton and Hove economy last year. In the wider south-east region, the sector employs more than 300,000 people, about 8% of the work force. The Bill enjoys broad and enthusiastic support from all sections of the tourism industry, and it is estimated that moving to daylight saving will boost tourism throughout the UK by about £3.5 billion and create 80,000 jobs.
That is just one more argument to add to the many that we have heard today about why, at the very least, the Bill should progress to the next stage of its passage through Parliament. The issue should be analysed properly. I think the cost-benefit analysis will demonstrate that the trial should go ahead, and as a result all of us will have a much better quality of life.