Tag: wind turbines

  • HPH189 :  Is an electric car the perfect accompaniment for a low energy home? – with Robert Llewellyn from Fully Charged

    HPH189 : Is an electric car the perfect accompaniment for a low energy home? – with Robert Llewellyn from Fully Charged

    Actor and TV presenter Robert Llewellyn shares his insights about the future of electric cars and energy production.

    Image source: www.fullychargedshow.co.uk

    Interview with Robert Llewellyn

    Robert Llewellyn is an actor and TV presenter, perhaps best known for his role as Kryten on Red Dwarf. His Internet project Fully Charged discusses electric vehicles and renewable energy and is expanding beyond its origins on YouTube.

    From petrol-head to EV enthusiast

    Robert confesses that he once loved cars with big petrol engines. He experienced his first ride in a Prius back in 2001, but it took time to reconsider what he was interested in and, by default, promoting. He got his first electric vehicle (EV) in 2009.

    He acknowledges there have been teething problems along the way – the lack of a charging infrastructure initially didn’t help – and comments that well-funded propaganda from the fossil fuel industry has attempted to hold back development.

    However, Robert describes the current global car market as being at its peak in terms of the internal combustion engine, and says the wider transition to electric vehicles is finally gathering pace. Eventually, as with asbestos, tobacco, catalytic converters and leaded petrol, the corporations will change. For now, Renault, Nissan and Tesla are leading the way.

    Electric vehicles are part of a bigger revolution

    By thinking of an electric car as a battery and computer on wheels, Robert can see even bigger change ahead in the form of vehicle automation. Having experienced the fully autonomous Nissan Leaf, Robert says “When you go in it, you go ‘alright, fair enough. This stuff works.’” The car performed way better than any driver Robert has ever seen. He expects total adoption of automation by the trucking industry within five years.

    “They won’t sell models, they’ll sell mobility”

    To be a success, electric cars will need to completely change the ownership model. It’s not just oil consumption that is unsustainable. Regardless of whether there’s enough lithium to supply batteries at the rate the car market is growing, there isn’t enough steel, rubber or plastic to make enough cars. As 90% of cars on the road are not in use 90% of the time, selling a service (as opposed to a car) is the direction manufacturers will have to take.

    With a self-driving car you could use it as much as you do now without owning it or having it parked outside your house. You wouldn’t even need to charge it, Robert says. “It will be charged when it turns up at your house because it will have charged itself.” Getting a charging point at your house is still worthwhile though, as he adds, “It’s very obvious that it’s not going to happen overnight.” It’s likely to be at least 10 years and possibly 20 before we see a significant change in car ownership.

    The existing energy production system has hidden costs

    When making the TV series ‘How Do They Do It?’, Robert learnt that oil refineries use so much electricity they have to have their own power stations! One in Pembrokeshire uses the same amount of electricity in a year as Coventry and Leicester. Thus, reducing oil refining would enable the greater electricity consumption needed for more electric cars.

    This typifies the ‘invisible’ costs of established technology. Petrol stations are considered a normal part of everyday life, therefore the costs aren’t thought about. Yet Robert points out the energy required to supply petrol stations is “catastrophically colossal”.

    Energy companies are starting to embrace change

    Financial savings are motivating change in the energy industry. Robert gives the example of solar plants. As with coal and nuclear, initial installation is hugely expensive, but once up and running, solar is much cheaper. No fuel costs, no waste management, no storage and no transportation mean massive savings.

    In the case of Pacific Edison, the huge American power company who use coal, nuclear and gas plants to generate electricity, “peak management issues” were overloading the grid. They found the cheapest solution was batteries, and this was in fact Tesla’s first multi-megawatt sized grid battery backup.

    Renewable energy production is growing globally

    It’s encouraging to see the adoption of renewable technologies “at breakneck pace” around the world. Robert points to China where the rate of solar panel and wind turbine installations is “mindboggling”. The UK is gradually producing more renewable energy too: it is actually the biggest offshore wind generating country in the world, taking advantage of the fact that 40% of all the wind in Europe is around the British Isles.

    You can run your house off your car and vice versa

    Robert says he doesn’t actually see himself as very ‘green’ and even admits to having an Aga! However, he has made gradual changes. He only has electric cars now, and in his house he has improved the insulation, added solar panels, very good windows and a battery on the wall. As a result, his electricity bill has dropped by about 85%.

    This form of domestic energy production and storage represent a big threat to the status quo, which he calls massively inefficient: “We have to subsidise all of the fossil fuel plants to a colossal amount of money to keep them running.” Robert’s house is typical of how current technology can be much more efficient, and he describes how some offices in the UK use similar systems and save hundreds of thousands of pounds a year without using any grid electricity.

    Tesla Powerwall Battery
    Image source: www.inhabitat.com

    Local energy production and storage would be more efficient

    The big UK energy companies are actually in favour of producing, owning and selling electricity locally as it would save a lot of money. The price of electricity fluctuates from getting paid to use it, to being fantastically expensive. At peak times it is imported at a higher cost than we ever pay for it, by many thousands of percent.

    Robert counters recent claims we’d need ten times more electricity if we moved to local production and storage. More intelligent and regular use would avoid the sudden peaks and troughs that are currently so costly and inefficient.

    Volume new builds aren’t designed to be energy efficient

    Robert doesn’t hold back about the standard of new houses, which he says are “designed and built by morons!” He laments their individual gas boilers, traditional pitched roofs that don’t face south and lack of solar panels.

    Robert cites studies showing you can build an efficient house at the cheapest possible cost where the house produces ALL the energy it needs, emphasising, “the people who live in that house will have free heating and lighting for the life of the building.”

    Lower energy homes could make a huge difference

    By using systems like the ones Robert has, with solar panels, batteries for storage and electric cars, a house can place about 70% less demand on the grid. While this means very little by itself, application on a much larger scale could have a huge environmental impact. A million houses set up in that way would mean closing down two fossil fuel burning power plants.

    Find out more

    Visit the website of Fully Charged

    Follow Robert Llewellyn on Twitter

     

    Transcript

    Download a transcript of the interview with Robert Llewellyn

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  • HPH085  : 10 Environmental Design Myths – with Sofie Pelsmakers from UCL

    HPH085 : 10 Environmental Design Myths – with Sofie Pelsmakers from UCL

    Sofie Pelsmakers, environmental architect and doctoral researcher at University College London (UCL), busts 10 common environmental design myths. This also serves as a good introduction to The Environmental Design Pocketbook.

    Sophie-Pelsmakers-outside-UCL

     

    Interview with Sofie Pelsmakers

    Sofie Pelsmakers is passionate about contextual design, with the focus very much on minimising our impact on the planet. She was inspired to write The Environmental Design Pocketbook after realising there was no single resource that had summed up the arguments and also pointed to deeper reading.

     

    Download Sofie’s PDF

    In this session Sofie is dispelling 10 environmental design myths. She has also put together this bonus PDF for further reading.

     

    Myth 1: “Climate Change is in The Future”

    With Met Office and NASA data showing that all of the UK’s warmest years have been in the last decade, it is evident that climate change is already here. So the notion that we’re designing for the distant future is wrong.

    The job for designers is making sure that buildings in the future will still be performing to the standard they were designed for and that they’re fit for purpose. Ideally we should be designing buildings that take into account future changes in climate or that can be adapted if necessary.

     future climatechangeHow future climates may vary (copyright The Environmental Design Pocketbook)

     

    Myth 2: “What if Global Warming is Not as Bad as Predicted?”

    If we’re wrong about climate change then the worst that can happen is that we’ll have designed better buildings that function in this climate and in any in the future.

    Joel Pitt cartoonCopyright Joel Pitt

     

    Myth 3: “Green Roofs – Are They Green?”

    This depends on the kind of green roof, in which part of the country and how well shaded and protected it is. There isn’t one solution suitable for all situations in all regions.

    Much of the sedum is imported which will have an environmental impact, and even more so if killed off from being used in the wrong position (perhaps being unable to survive on a thin roof in the south east of England during a drought) and needing to be replaced.

    Sofie states the current fashion is of thinking if a building “looks green”, such as with green roofs, green walls, or renewables then surely it must be, however it is just not as simple as that.

    green-roof-at-the-muse An example of a biodiverse and intensive green roof (copyright bere:architects)

     

    Myth 4: “Green Walls”

    While they have aesthetically pleasing qualities, a massive amount of energy is actually used in circulating water and nutrients around the plants to keep them alive. Systems can fail because they’ve not been maintained properly, the plants are in very exposed areas, or exotic imported plants are used that are just not suited to the climate. With considerable resources and energy being used to keep them alive or replace them if they die, Sofie suggests a much more robust way of creating a green wall is to use plants from the ground up and along trellises and buildings.

    green-wall-at-paradise-park

    A green wall at Paradise Park

     

    Myth 5: “Micro-Renewables Such as Micro-Wind Turbines Are a Great Idea in Urban Areas”

    Sofie feels that there is a danger in sustainable design of going towards gimmicky “look at me” type renewables. In fact the energy used to make and transit a wind turbine to site can actually be greater than the energy it will ever generate, particularly if erected in an urban setting where there isn’t enough consistent wind. And despite millions being spent on renewables there can be unintended consequences, for example in some cases turbines have even been switched off because of complaints about their noise.

    suitability windturbines in urban areasThe sustainability of wind turbines in urban areas (copyright The Environmental Design Pocketbook)

     

    Myth 6: “Greywater and Rainwater – Is it Always Environmentally Sound?”

    If your sole concern is about saving water then these systems will succeed in that objective. Depending on the system used however and when you consider the embodied energy in the extra pipework, the energy used for pumping, the chemical cleaning components etc, you could end up saving very little water for a great energy cost.

    A far more effective solution would be a gravity fed system with short retention recycling which would not need the cleaning to be done mechanically.

     

    Myth 7: “Eco-Measures Lead to Energy Savings and Reduced Bills, Right?”

    Using a greywater recycling system like the example above, it is evident that bills could actually increase from the costs of energy used to pump the water around, clean it and feed it back.

    An unintended consequence is that we think that eco-measures will save energy but actually in a lot of cases people then behave differently.

     

    Myth 8: “Does a Zero-Energy Building Mean its Environmental Impact is Zero?”

    While we may save carbon from energy generated onsite (and if offset with allowable solutions), a building has more environmental impacts which cannot all be measured in carbon (health, biodiversity etc.).

    Also the current definition of zero carbon acknowledges that you’d have to build at low densities. This in turn makes public transport and walking to services less viable, and increases dependence on cars.

     

    Myth 9: “If I Have Clean Renewable Energy it Doesn’t Matter How Much I Use”

    There are around 27 million buildings in the UK, many of which are built to appalling standards. While a lot of people think that there’s no need to upgrade them if we can just decarbonise the grid, they neglect to consider that the high energy demand requires considerable money and finite resources for the substantial array of renewables that would be required. There would also be ridiculous amount of space required to enable those renewables to offset an energy-inefficient building.

    [Tweet “Sofie Pelsmakers: “Energy efficiency should be the first consideration before renewables.””].

    Renewable Energy

     

    Myth 10: “Retrofit of Existing Buildings = Unneeded and Boring”

    With such a large number of buildings built to a poor standard there is a fundamental need for them to be upgraded in order to meet our 2050 carbon budgets and to address the problems of fuel poverty.

    Sofie feels that many architects find retrofitting unrewarding and complicated due to limitations such as expense and existing structure. She argues that actually it brings the architect back to the base principles of insulation details, airtightness and thermal bridging that are often forgotten.

     

    Find Out More

    Find out more about The Environmental Design Pocketbook

    Follow Sofie Pelsmakers on Twitter (Sofie tweets so much great stuff!)

     

    Transcript

    Download a transcript of the interview with Sofie Pelsmakers.

     

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