Low Carbon technologies in a green economy - Energy and Climate Change Contents


Examination of Witnesses (Questions 182-203)

DR DAVID CLARKE

8 JULY 2009

  Q182 Chairman: Welcome, Dr Clarke. You have us to yourself for the next three quarters of an hour. You are our fifth witness but you are covering the same area all by yourself. Perhaps you would like to introduce yourself for the record.

  Dr Clarke: I am Dr David Clarke, Chief Executive of the Energy Technologies Institute which I will henceforth call ETI for simplicity.

  Q183  Chairman: Could I invite you to start by reflecting on the main objectives and priorities of any green stimulus? What do you think should be the areas of concentration of the green stimulus and what would be your view about the relationship between short term stimulus and longer term investment?

  Dr Clarke: If I could start by saying that to my mind across this whole space there are three critical issues and that plays into what you are talking about. The first one is in terms of deployment of new energy technologies, what we are talking about here is very much a mass scale deployment, this is not niche application. The first thing to recognise from the point of view of stimulus is that the deployment across the breadth of the UK is really going to relate to major industrial groups and they can provide both the deployment capabilities but also the support in terms of operation and maintenance on whatever the systems are that we end up talking about. The second thing is that having said that those companies do not necessarily have the innovative ideas and the technology base in some cases to actually put that capability into practice to start with. There is a big challenge in terms of having to find ways of making sure that innovation gets pulled through from small and medium enterprises and from academia in a collaborative win-win way into those companies. The third thing very much I would say is around the support side—this is probably the most critical issue across the piece -we have to have sustained support for long term incentives around energy deployment but also around the skills development and the regulatory framework that goes with it. So those are the three things I think are the key items in actually taking the green economy forward in the UK but each of those is amenable to a different kind of stimulus approach and a different kind of set of incentives. I think it is very difficult to give you one answer when actually we have to look at this in the round and find incentives and mechanisms that hit all of those three areas.

  Q184  Chairman: We will perhaps look at some of those more specific incentives in a moment. Overall what is your view of the extent of the UK stimulus package? We have heard already this morning about the issue of the size of the UK stimulus package compared with what Lord Stern recommended in terms of 20% of stimulus package compared with estimates of 7%. Bearing in mind what you have said about the different forms of stimulus which may be required, how do you think that stimulus package is targeted within that 7% and do you think that 7% is sufficient for the purposes that you have outlined?

  Dr Clarke: I guess I look at it from the point of view of whether it is actually 7%. If I looked at what would probably be classed as a stimulus package it probably is about 7% and at that stage I would say it is inadequate. If I then looked at everything that is going on in the UK across a whole range of different mechanisms which actually support or can support some of the three items I have said there, I think we will probably find we are more in the 20% territory, certainly in excess of 10, heading towards 20. I think the challenge we have is to get the coherency and the strategy across all of those areas such that we recognise that it is a much bigger number than 7%. In doing that I am not suggesting for a minute that we should have some kind of single plan that says that everything has to fit into this and here it is laid down centrally because it is not just practical to do that on the scale that we are talking about, but what it does require is a very clear overarching strategy with a very clear set of objectives and goals that we should be aiming for. Then I think in terms of the very broad range of bodies that can help with that stimulus package people can then actually see why they are lining up behind it and how they line up behind it.

  Q185  Chairman: You say there should be clear goals. What might those consist of and particularly to what extent do you envisage those re-entering the territory of picking winners and focussing as again we have heard about this morning?

  Dr Clarke: If you look at the goals today superficially what would you find? For the 2020 target you would find a percentage of renewable energy, 15% for 2020; you would find a CO2 reduction target; you would find a transport biofuels target; you would find building energy efficiency targets and so on. I am not sure I would find anything about affordability of energy; I am not sure I would find anything about security of energy in terms of security of supply both from a geographic point of view and from an intermittency point of view. Once you step into those kinds of areas it is difficult and challenging. I think that is the critical issue you have to try and set: what is the level we are actually trying to achieve on some of those things? It may not be absolute but the reality, from an economic development point of view—whether that is a "business as usual" economic development or whether it is wearing a more green economy badge -is that it is critical to be able to offer affordable, secure, sustainable energy. If you do not have that you cannot develop the industrial base because it will go somewhere else. I think the fundamental is how do we set targets in those kinds of areas so that people can understand (by people I mean governing bodies as well as the public) why those targets are there and then we can then shoot for those in a sensible way. That is the piece that is missing. It is very, very difficult to do and does not at that stage get you into picking technological winners necessarily but it does get you into a space of economic planning without a doubt.

  Q186  Chairman: Let us take briefly one of those three imperatives you mentioned, affordable. One of the arguments that has been widely put forward is the question of the extent to which there needs to be carbon price mechanisms within a future energy economy which will in turn stimulate investment and development of new green technologies and also other mechanisms to maintain an energy price at levels which will more broadly do that which appear to push against the imperative of affordability. How would you balance those in terms of your views of imperatives?

  Dr Clarke: You are quite right because fundamentally if you look at almost any renewable energy source today it will be more expensive than central generation from the point of view of the national energy price. That is the challenge we have got. The only way you can mitigate against that fundamentally is by setting a realistic carbon price which has a floor on it. At the moment clearly we have a carbon price which, to all intents and purposes, has no floor on it. I think that is the kind of challenge we have going forward and probably going into Copenhagen later this year, to find a mechanism that allows us internationally to set a realistic carbon price that we can all see the imperative for. Whether that number is £60 a tonne or £100 a tonne or whatever it is, it clearly is not nine euros a ton. It is just not viable at that level. To my mind the carbon pricing issue is the key challenge going forward. If we had that mechanism identified and taking exactly the same area that some of the other witnesses gave this morning, the position around a long term sustained position in terms of what is the target going forward if we have that long term sustained position on policy around carbon pricing, the market can then actually start to operate from the point of view of technology development and deployment and delivery of energy to the customer but without it we will be in a position where the offshore renewable industry, for instance, will be fundamentally dependent on a government subsidy to be price comparable with central generation at which point, from a market point of view and from an industrial development point of view, why would I go into offshore wind when it depends on a subsidy that may be taken away?

  Q187  Dr Turner: How would you suggest the European Investment Bank's £4 billion is best used? Who would you lend to?

  Dr Clarke: I have dealt with the European Investment Bank before; if you operate in the right style it is not a difficult debate. They would view a good credit as research and development in major global industry where they can see that fundamentally they will get a return.

  Q188  Dr Turner: In practice if you are looking to use that money to support renewable technologies they tend to be developed by SMEs, not major industries. How are you going to make them the beneficiaries of the European Investment Bank?

  Dr Clarke: Going back to what I said at the start, development of technology is one thing; deployment of technologies on that scale—

  Q189  Dr Turner: I am talking early stage deployment here.

  Dr Clarke: Deployment at mass scale is a different story. An SME will not be capable of doing that. If you look around the industries that we are talking about at the moment (you have had a lot of conversations about offshore wind and marine), marine is a very good example. Right now if you want to transport a marine device up the coast of the UK from where you built it to where you want to deploy it the insurance for the journey will be well in excess of the cost of the machine, probably three times. That is the kind of challenge you are up against. So for an SME that says they are looking to take insurance at that point of the order of one and a half to two million pounds; that will be the premium they will have to pay to move the machine. Clearly you either have to pay £2 million which you do not have, or you risk moving the machine and if it gets washed off the boat or the boat sinks the company has probably just gone with it. Which do you do as an SME? You cannot do the first one; you have to take the risk on the second one. How many of them are prepared to take that risk? Very few. So fundamentally what you say at that point is that the SMEs in the innovation space do a fantastic job; the developers are mostly in that space and can actually bring those ideas into the market. Then you start to need major industrial and financial players who can carry that kind of risk that I have described as an example. You need those kinds of players who can then work with the SMEs in a collaborative fashion to say, "Fine, we will now take those ideas and capabilities to the market in the initial stage of deployment and potentially mass production". You have to find ways of engineering partnerships with these guys because clearly the SME will perceive risk at this point from the point of view of their future business potential; the bigger corporate who is going to take the financial risk at this stage is quite clearly going to be considering whether it is really worth it, is there a long term policy and is this going to be useful in the UK? If they answer is yes then they will probably do it. It is a matter of finding that partnership.

  Q190  Dr Turner: Can you see any sign of these partnerships developing?

  Dr Clarke: Yes. If you look round the industry right now we are starting to see a few big players who are aligning themselves with specific SMEs in these current spaces. Some are what we class as major industrial engineering companies and some of the power utilities who have started to take that alignment, to make it happen. I would stress that it is challenging for both sides.

  Chairman: Could we now look at some of the specific low carbon technologies, particularly those mentioned in the memorandum to us from DECC: CCS, offshore wind, marine energy. I appreciate it is not within your remit to look particularly at nuclear energy, but it mentioned also low carbon vehicles and the like.

  Q191  Mr Weir: What potential do you think carbon capture and storage has to contribute to a low carbon economy and in particular to the 2020 targets?

  Dr Clarke: In terms of 2020 targets it is clearly going to be a relative small part. You would have to say the same about nuclear. Unlike some of the previous speakers I am quite happy to give you a statement on nuclear. The position on some of the big technologies—if I can call them that, these are the very large plant technologies—is that in the main the deployment and implementation of them is not constrained by technology, it is constrained by supply chain and then issues around planning, the grid and more usual things, but the critical ones are in the supply chain and then the planning side. The supply chain is the main one. When you look at carbon capture and storage—and nuclear would be a very similar story—it has not yet been fully demonstrated anywhere in the world. All the elements have been demonstrated in different places but they need putting together in one place in a complete, full scale unit for demonstration. The estimate for that is something in excess of £2 billion per unit. How many of those can we actually implement world-wide by 2020? Not many; a few 10s perhaps. The reality in terms of what we can do in the UK is we are probably in the one to 10 space somewhere, hopefully it is significantly more than one but it is difficult to see it being in excess of something like 10. That would account for only, at the very best, probably 10% of UK electricity generation. On the nuclear side there is a similar story; it is about supply chain, it is about planning to an extent, but critically it is about supply chain and the capacity does not exist world-wide to build these plants at the rate the world is starting to demand them. By 2020 they are going to be quite small.

  Q192  Mr Weir: How about low carbon vehicles? What do you think they can contribute to a low carbon economy? What could the government do so support them?

  Dr Clarke: Low carbon vehicles is a very interesting area. I will talk primarily about light vehicles rather than heavy goods vehicles but the situation is to some extent similar. Light vehicles—cars, light goods vehicles—produce in excess of 50% of the CO2 emissions from UK transport and that makes up about 20% of the total CO2 emissions in the UK. There are three major areas which can be addressed there: fundamentally the design of the vehicle from an efficiency point of view (engine efficiency) and from an aerodynamics point of view (light weight and so on). The second area which then splits into two is the fuel source and fundamentally we have three options. We have fossil fuel today which is what it is; we have then got what would be classed probably as zero carbon biofuels in some way, they are liquid fuels; then we have electricity. By 2020 certainly those are the three options. We—ETI—all have been working very closely with the manufacturers and the electricity companies around the electric vehicle question, what level of deployment might be possible by 2020. What we are starting to see there is a significant step change in what may be achievable around electric vehicles and by that I mean all electric vehicles and plug-in hybrid electric vehicles. Where we are now in terms of what government is doing says that on the electric vehicle side the right kind of mechanisms are starting to be put into place to give the industry that long term confidence that the UK is going to be a sensible place to start putting some of this capability. We are in the process of developing a project which will be announced in the next few weeks which will start to form part of the glue for making that happen in terms of incentivising the industrial base. I think the general government policy has changed significantly over the last 12 months and we are now starting to see manufacturers getting confidence around electric vehicles. The challenge for the UK is then to understand what is the mix and where do these vehicles go. Clearly, as the Carbon Trust was saying earlier, there are big questions around range on all electric vehicles and what is actually achievable. Plug-in hybrid vehicles are probably a good option for a lot of the UK in reality in terms of area of population. The third one area is biofuels. Biofuels is clearly going to be important again because of the geography of the UK and the population arrangements. A lot of people require fairly long distance vehicles on a regular basis and that implies liquid fuel. Biofuels are clearly going to be important. The question then becomes: if we have a finite level of biomass and biofuel capability in the UK in terms of what we can actually grow—which we have—where is the best place to use it? Transport? Power stations? Something else? That is what we are trying to work through at the moment with a number of people across the sector.

  Q193  Mr Weir: As regards electric vehicles, what is the interaction with the de-carbonisation of the electricity supply? If we having difficulty because of the technology in that, is the introduction of electric vehicles perhaps going to exacerbate rather than help the situation overall?

  Dr Clarke: That is a very good question. If you did nothing from today and you introduced electric vehicles then clearly the demand for electricity is going to rise. In essence, even taking into account our energy savings efficiency measures and so on, that says that we will have to install additional electricity generating capacity just for electric vehicles. How fast can we do that? I can see nothing dramatically changing before about 2017 or 2020, so clearly by 2020 the benefits of putting in a lot of electric vehicles in pure CO2 terms is actually going to cost more. The benefit will start to ramp up after that if we continue to de-carbonise the electricity generation side in the way that we expect we will have to do and that is why nuclear has to be part of the equation, as does coal and CCS, because the electricity demand is going to rise significantly as we go more and more towards electric vehicles. As a consequence you simply say, for all sorts of reasons, that you will have to have a degree of base rate generation which runs as background and that realistically means coal with CCS, gas with CCS and nuclear.

  Q194  Charles Hendry: Can I say first of all that I think your answers have been incredibly helpful and you are speaking not as somebody with aspirations but as somebody who is talking absolutely in terms of delivery and how you bring about change. I think that is really useful for us. I am concerned about the disconnect between some of the talk that there has been about low carbon technologies and the delivery. When we started talking about carbon capture and storage here four years ago we probably were leading the world in some of that thinking but now we have seen that lead being taken by the United States, Canada, Abu Dhabi, Australia, China and we are slipping behind. I am concerned about how we get back in front of that movement again. In the marine technologies we have had some really brilliant British companies developing some of those technologies but something like Polamis are now looking to Portugal because they are going to get more support from the government in Portugal than they are getting in the United Kingdom. Again this is an area where we should naturally have a global leadership potential but where it seems to be slipping away. What needs to be done in concrete terms to re-gain global leadership?

  Dr Clarke: I will talk about CCS and marine in a second. What needs to be done to regain leadership, I think fundamentally we have to recognise that there is a distinction between energy systems which are very suitable for deployment in the UK versus things that we may have the design and manufacturing base for in the UK but which fundamentally are going to be an export opportunity. Those two things are different. In some cases they overlap and are the same, but in some cases they are different and we have to be quite careful about what answer we are trying to discuss. In terms of technologies in CCS and technologies in marine and the whole system, CCS is going to be a global market; it already is, as you said yourself. Australia, China, the United Kingdom, Japan, America are all very interested in CCS for obvious reasons; everyone has coal and everyone in those geographies is pretty reliant on coal from a history point of view and from a future energy supply point of view going forward. CCS is going to be a major global market. The companies that provide the equipment and technology will be global players and they will operate globally. It will be the well-known names in the engineering supply industry and energy supply. How do we re-gain the lead in that area where we are now talking about having to operate on a global basis? I think we have to be realistic about how many of those global players currently have what I would class as design and manufacture in the UK? The answer is not many of them, if any. The question becomes: how do you incentivise those kinds of companies—the big multi-nationals—to set up those operations in the UK or to transfer them to the UK? It is clearly very, very challenging. I think the kinds of things that influence those decisions are major financial incentives on an on-going basis. It is not about implementing a CCS plant in the UK and as a consequence suddenly a major multi-national relocates all its design and manufacture capability to the UK. That is very unlikely to happen. It will be about a sustained series of financial business incentives to actually make that happen. Going back to what we said right at the start, I think most of those sectors probably exist in the UK already but it is the package, how it is seen by a potential inward investor as a package. That is one aspect. The second aspect where we have real strength is in the underpinning innovation base in the SMEs and particularly in this case in universities. We have historically a very strong chemical industry in the UK. We have still got the underpinning science base that goes with that and in some cases we have got the engineering for it. It is really making that available to potential investors which is important but again I think we probably need to articulate how well that capability exists. Marine is a different story altogether. Some of the best, if not the best, marine energy resources from a wave and tidal point of view are off the coast of the UK, predominantly the north coast and the south-west. There are some other good spots in the world but in terms of density of resource UK is one of the best in the world. Logically you say that this has got to be a good place to do marine technology and clearly we have had the SME's development base historically in the UK which has looked at marine. It is a global industry but nobody has taken a great interest in marine until very, very recently. It is predominantly a geographic specific market. As I say, there are a few key regions—the UK, the Pacific, the West Coast of South America and so on—and the market is quite small. From an engineering point of view people talk about it being difficult; I would say this is extremely difficult engineering. Clearly it is something which is quite important for the UK. On a global basis it is high risk frankly. The question then becomes: how do we encourage this to develop in the UK because it is not going to develop anywhere else? Now it is about getting the engineering companies and the utilities to start to take this seriously and to take some of the risk out of it. That is the kind of work ETI are trying to do through demonstration of devices, not in testing tanks necessarily but as a full system test in the sea with the right kind of engineering backing from major engineering companies, the kind of members I have on my board, who have the skills, the market knowledge engineering capability and the financial capability to really take some of those devices and put them in at the right scale in the real conditions, and then we can lead the industrial development.

  Q195  Charles Hendry: We have established that these new technologies are very challenging and therefore probably going to be very expensive. We talked earlier about some of the targets and the nature of those targets. As an engineer are there any of those targets which you think are going to be impossible to achieve without compromising the other requirements you talked about in terms of affordability and security of supply?

  Dr Clarke: If we are in the marine sector it is what I always class as "do-able"; it is difficult but we can do it and we can do it for the UK. There are other areas where we have to be realistic and look at what is the deployment opportunity. From a point of view of deployment in the UK I think solar photovoltaics today are far too expensive. If we can get a real cut in the price of photovoltaics it may become economic for the UK. It will be economic for other areas of the world, southern Europe most definitely. I think that is one where today it is exceedingly expensive in terms of the efficiency you can get with the UK sun, the problem being that generally we have quite a lot of cloud and no intense light from one direction. Long term solar PV has great potential but possibly not so much for the UK so it becomes an export opportunity. That is one where I am not sure we can actually get the price right for the UK. Marine and CCS can be done.

  Chairman: Can we now turn to the question of the extent to which we can mitigate some of those costs, for example, of increasing electricity supply by means of energy efficiency, smart grids and associated matters? Robert?

  Q196  Sir Robert Smith: Given the make up of your board I should remind the Committee that my entry in the Register of Members' Interests is as a shareholder in Shell. How realistic do you think the target is for all new homes to be zero carbon by 2016?

  Dr Clarke: My answer on this kind of thing is very straightforward. If you are prepared to pay for the house it is do-able. Is there an affordability question? Right now, if you want a zero carbon building, we can do that but you will have to pay an awful lot of money for it. We can deliver zero carbon housing by 2016 but my question is whether people will be able to afford it? Fundamentally there is a cost reduction required on a whole range of technologies going into those types of development. The question is not can it be done; it is what is going to be the price of doing it? I do not know the answer to that.

  Q197  Sir Robert Smith: Looking at the housing market, when the developer is selling they want to put in as little investment into the house and sell it for as much as possible. The buyer pays a mortgage to cover the cost of the house and then pays the running costs of the house. Do you think our market is not fully developed enough where people are able to see that actually if the developers put more in and they paid more for the house, the overall running cost of the house would actually be cheaper?

  Dr Clarke: Yes, but capital up front drives a lot of thinking. It does not matter whether it is houses or whether it is offshore wind farms or gas fired power stations, people generally want to expose as little capital as they can at the front end. That is the reality. Yes, is the answer to your point, but I do not know whether it is actually practical.

  Q198  Sir Robert Smith: In fact even if we did get new homes to be zero carbon by 2016 that would only be the tip of the iceberg because people would be living in existing homes.

  Dr Clarke: The real challenge is to find ways of retrofitting the existing housing stock to improve energy efficiency on it. We turn over about 1% of the housing stock a year so by 2016 we are going to be making pretty small inroads, even after that, in terms of energy efficiency in buildings from that point of view. The challenge is implementing retrofit technology into houses and doing that in a way that is both affordable to the owner (or whoever is paying for it) and secondly in a way they find socially acceptable from the point of view of disruption and what changes it physically makes to their building and anything else. That is partly mindset and it is also partly about perceived commercial value and so on. Those are the two issues. The one that we are trying to address at ETI is the issue around how do you actually find ways of implementing packages of technologies as a retrofit rather than just somebody coming along to do the insulation and then somebody else at some other stage comes along and does something else. We are trying to see how we can actually implement packages of technologies to give the maximum benefit to any particular building and owner, and how do you then implement those very quickly so that there is minimal disruption and it is practical to actually say, "We need your house keys on Monday; you can keep the upstairs until Wednesday; we will do upstairs Wednesday to Friday and then we'll be gone". That is the kind of challenge we are trying to address on a mass scale because doing one is no good. We have to make this available at community level; it must be mass deployment on thousands of buildings.

  Q199  Sir Robert Smith: Is there more that the government should be doing to incentivise this?

  Dr Clarke: We have not looked specifically at government incentives in this area yet; we are looking at it from a technology point of view at this stage about how difficult this is and how could we make it attractive to the consumer. When we get that far, if we can identify what I would class as reasonably low cost approaches to that then I suspect the question would still come: how do we then turn a reasonably low cost option into a very low cost option? I think that is where the government incentive and regulation will come into it. We are not there yet.

  Q200  Sir Robert Smith: One of the other things you mentioned was the need for a coherent integrated approach to smart grids. Is there one at the moment?

  Dr Clarke: Not yet, no. That is for a number of reasons, one if which is that we do not yet know what the question is. Going back to the point about low carbon vehicles, it is only over the last nine months where we have been in the process of bringing together a whole range of groups across the industry from the car manufacturers to the National Grid to electricity suppliers to what would be classed as a systems integrated service type provision people, the kind of people who run the congestion charge network here in London. We need to bring all of those groups together to actually understand how might this grid look in the future and how might it operate. Actually the big issues are probably not at National Grid level; they are down at a distribution network level so it is seeing what happens here in London or what happens in the centre of Birmingham and that is when the big challenges start to come in. The points that were being discussed earlier around the challenges of introducing micro-generation and so on and the impact that could or could not have on the grid and central generation, the whole smart grid question, low carbon vehicles is a really good example of this because the vehicle is relatively straightforward in terms of battery technology (it is not simple but it is understood and we know how to do it) and the distribution network side operates the way it does today. What is missing is the equivalent of the thing that turns a mobile phone in your pocket into something that enables you to talk to anybody in the world whilst you are driving down a motorway; it operates seamlessly in a very fluid fashion that probably no-one in this room understands how it actually works and you get billed for it using some system that you are not too worried about because it is affordable. It is getting the smart grid to that level of sophistication so that when you plug your car in you have confidence that when you get back it will be charged. At this point, does a vehicle know when you are coming back? It depends. If it is seven o'clock at night it probably says, "Well, I know normally you do not come back until eight o'clock in the morning or whatever. If it is overnight, I can charge it whenever I want in the next 14 hours". It is getting that information base and getting the systems that can make that kind of assessment for us so that we do not need to know what is going on frankly on a day to day basis but that is when the smart grid will start to operate and that is when it will work well. At a distribution level that is what will stop the existing trips and fault mechanisms cutting out on the grid all the time, having that level of sophistication and understanding of what can be done or not on the distribution system at any one point in time.

  Chairman: Could we briefly consider the question of the barriers to this investment and changes in deployment of resources, particularly in respect of the recession?

  Q201  Dr Turner: What effect is the recession having on investment in low carbon technologies?

  Dr Clarke: I would say that it is having three effects. There is a greater demand for support from what I would class as the industry in the sense that clearly people are finding it difficult to get credit and are now looking for more support in general from a range of investors, whether it is grant giving bodies or whether it is technology investors such as ourselves, venture capital or whatever. People are looking for money. Clearly that is one issue. Then the real effects we are seeing are people being much more focussed about what they want and why they want it but they are starting to be more flexible around what they are prepared to accept. As an example, a company came to me looking for investment recently. I was prepared to consider that but on the basis of first auditing their engineering capability because I was not totally convinced it was what we needed. One of my engineering company members carried out an audit of that company on an engineering capability base. I should say that the company did not really want to have this happen for reasons you can probably imagine because they perceived a risk in this. The potential upside was that they got a tick from a major global engineering company. They got the tick. As a consequence their standing has gone up significantly not in the formal sense (the credit rating kind of question) but from an engineering point of view. They came to us, we have audited them and we have said that this is something we are prepared to look at. It has been audited by a major engineering company and they can tell the people that. What we are starting to see is that people need money; you can argue they see more challenges in getting money but they are prepared to be more flexible to get the funding that they need and as an impact of all of that things are starting to move faster and in a more focussed way.

  Q202  Chairman: We are running out of time this morning I am afraid. You have given very useful and extensive answers. Can I just ask you one brief question? How important do you think energy from waste will be to meeting the 2020 targets?

  Dr Clarke: In simplistic terms, very important. There is no doubt that the biofuel question and the biomass question—you can include waste in that—is a big opportunity for the UK; globally as well but fundamentally for the UK. These start to form part of your zero carbon liquid fuel options or gaseous fuel options that can be used to replace either transport fuels or, certainly when we start talking about micro-CHP systems long term. If you want those to be really efficient and low carbon, you will probably have to put a bio-feed stock in the gas lines to reduce the carbon. At which point you say that waste becomes very important and it is accessible.

  Q203  Chairman: Do you see that as a long term approach, particularly in terms of de-carbonising the gas supply for example?

  Dr Clarke: I would class it as reducing the carbon in the gas supply. De-carbon tends to imply zero. I cannot see that kind of feed stock provision for the UK. Micro-CHP systems are clearly going to happen in certain areas; the market will drive that. Micro-CHP will help us get to 2020 but getting to 2050 with an 80% reduction in CO2 says, I have now got 20 million domestic gas boilers to day so let us say we roll over 20%, we are going to have a million or more[1] of micro-CHP systems emitting CO2 and I will not be able to catch that CO2 the way I can off a central plant. These are point sources distributed across the UK; there is no way I can capture that CO2 economically. If we are going to hit an 80% CO2 reduction target I have to, because there will be CO2 from other places that I will not be able to capture from transport potentially, international aviation, shipping potentially. Micro-CHP long term becomes a real problem unless I can mitigate some of the CO2 by putting a bio-feed stock in the line. I cannot see us ever having biomass feed stock to fully replace the gas system. It is that kind of interplay that we have to look at. Some of these technologies clearly are going to fill gaps for us and energy from waste and micro-CHP systems are all things which are going to be really important in the near term. In the long term, energy from waste is clearly going to remain important. Whether some of the others do or not will depend on what the mix looks like between de-carbonised electricity, biofuel availability and so on.

  Chairman: I think you have at the very least set us a challenge for some of our future inquiries in terms of those longer term thoughts which are extremely important. Thank you very much for your very comprehensive evidence this morning which has been very helpful to our inquiry. David Clarke, thank you very much. That concludes our business this morning.





1   Note from the witness: "Four million or more" Back


 
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