1. CRed carbon reduction 1 The Carbon Reduction Project Hard Choices Ahead Lay Chairman, Norwich East Deanery, Energy Science Director: HSBC Director of Low Carbon Innovation School of Environmental Sciences, University of East Anglia Climate Change: The Greatest Threat to Mankind? United Reform Church: 13 th January 2007 Keith Tovey ( 杜伟贤 ) M.A., PhD, CEng, MICE, CEnv CRed

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3. 3 1.0 0.5 0.0 -0.5 1860 1880 1900 1920 1940 1960 1980 2000 Temperature Rise ( o C) 1.0 0.5 0.0 -0.5 1860 1880 1900 1920 1940 1960 1980 2000 Temperature Rise ( o C) 1.0 0.5 0.0 -0.5 1860 1880 1900 1920 1940 1960 1980 2000 Temperature Rise ( o C) Source: Hadley Centre, The Met.Office actual predicted Is Global Warming man made? Prediction: Anthropogenic only Not a good match between 1920 and 1970 Prediction: Natural only good match until 1960 Prediction: Natural and Anthropogenic Generally a good match Predictions include: Greenhouse Gas emissions Sulphates and ozone Solar and volcanic activity

4. 4 Total winter precipitation Total summer precipitation Source: Tim Osborne, CRU Change in precipitation 1961-2001 Increasing Occurrence of DroughtIncreasing Occurrence of Flood

5. 5 (Source: Prof. Bill McGuire, University College London) Norwich Consequence of ~ 1m rise Consequence of ~ 6m rise Norwich City would be playing water polo!

6. 6 1979 2003 Climate Change Arctic meltdown 1979 - 2003 Summer ice coverage of Arctic Polar Region –Nasa satellite imagery Source: Nasa http://www.nasa.gov/centers/goddard/news/topstory/2003/1023esuice.htmlhttp://www.nasa.gov/centers/goddard/news/topstory/2003/1023esuice.html 20% reduction in 24 years

7. 7 Options for Electricity Generation in 2020 - Non-Renewable Methods Nuclear New Build assumes one new station is completed each year after 2017.

8. 8 Options for Electricity Generation in 2020 - Renewable

9. 9 Area required to supply 5% of UK electricity needs ~ 300 sq km But energy needed to make PV takes up to 8 years to pay back in UK.

10. 10 Options for Electricity Generation in 2020 - Renewable But Land Area required is very large - the area of Norfolk and Suffolk would be needed to generated just over 5% of UK electricity needs. Transport Fuels: Biodiesel? Bioethanol? Compressed gas from methane from waste.

11. 11 Options for Electricity Generation in 2020 - Renewable

12. 12 Solar Energy - The BroadSol Project Annual Solar Gain 910 kWh Solar Collectors installed 27th January 2004

13. 13 Our Choices: They are difficult If our answer is NO Do we want to return to using coal? then carbon dioxide emissions will rise significantly unless we can develop carbon sequestration and apply it to ALL our COAL fired power stations within 10 years - unlikely. If our answer to coal is NO Do we want to leave things are they are and see continued exploitation of gas for both heating and electricity generation? >>>>>> Do we want to exploit available renewables i.e onshore/offshore wind and biomass. Photovoltaics, tidal, wave are not options for next 20 years. If our answer is NO Do we want to see a renewal of nuclear power Are we happy with this and the other attendant risks? Opted Out Coal: Stations can only run for 20 000 hours more and must close by 2015 New Nuclear assumes completing 1 new nuclear station each year beyond 2016 New Coal assumes completing 1 new coal station each year beyond 2016

14. 14 Our Choices: They are difficult If our answer is YES By 2020 we will be dependent on around 70% of our heating and electricity from GAS imported from countries like Russia, Iran, Iraq, Libya, Algeria Are we happy with this prospect? >>>>>> If not: We need even more substantial cuts in energy use. Or are we prepared to sacrifice our future to effects of Global Warming by using coal? - the North Norfolk Coal Field? – Aylsham Colliery, North Walsham Pit? Do we wish to reconsider our stance on renewables? Inaction or delays in decision making will lead us down the GAS option route and all the attendant Security issues that raises.

15. 15 Some Myths about Wind Energy What happens when the wind does not blow?. Large Coal /Nuclear Stations trip/ have failures and these cause a loss of power within a matter of minutes. In terms of short term variations wind is more reliable. Wind Turbines kill birds. Evidence suggesta that a few birds are killed typically 3 per installed MW per year except in a few locations. In many cases it is much less Oldest wind farm in UK on Burgar Hill has an RSPB reserve right next to it. Currently UK has around 1700 MW wind turbines installed perhaps 5000 birds killed a year Estimates of 1 million killed each year by vehicles

16. 16 How many people know what 9 tonnes of CO 2 looks like? 5 hot air balloons per person per year. Around 4 million in the Diocese of Norwich. In the developing world, the average is under 1 balloon per person Is this Fair? On average each person in UK causes the emission of 9 tonnes of CO 2 each year. "Nobody made a greater mistake than he who did nothing because he thought he could do only a little." Edmund Burke (1727 – 1797)

17. 17 Raising Awareness A tumble dryer uses 4 times as much energy as a washing machine. Using it 5 times a week will cost over £100 a year just for this appliance alone and emit over half a tonne of CO 2. 10 gms of carbon dioxide has an equivalent volume of 1 party balloon. Standby on electrical appliances 60+ kWh a year - 4000 balloons. A Mobile Phone charger: up to 20 kWh per year ~ 1000 balloons each year. 10 kg CO 2 Filling up with petrol (~£38 for a full tank – 40 litres) --------- 90 kg of CO2 (5% of one hot air balloon) How far does one have to drive in a small family car (e.g. 1400 cc Toyota Corolla) to emit as much carbon dioxide as heating an old persons room for 1 hour? 1.6 miles At Gao’an No 1 Primary School in Xuhui District, Shanghai

18. 18 Saving Energy – A Practical Guide Ways to Reduce Your Carbon Footprint Micro Wind Micro CHP Heat Pumps

19. 19 Involve the local Community The residents on the island of Burray (Orkney) campaigned for a wind turbine. On average they are more than self-sufficient in electricity needs and indeed are a net exporter of electricity. Many of the Islanders bought shares in the project and are now reaping the reward. Orkney is hoping to be a zero net emitter of carbon dioxide by 2015.

20. 20 Electricity Statistics: Each house in Norwich consumes, 3727 kWh per year. Broadland 5057 kWh Breckland 5612 kWh North Norfolk 5668 kWh South Norfolk 5797 kWh Kings Lynn and 5908 kWh Great 5144 kWh West Norfolk Yarmouth A wind farm the size of Scroby Sands can supply twice domestic demand of Norwich or 66% on average. (or 22% of total demand) Saves ~ 70 000 to 75 000 tonnes of carbon dioxide a year or 40 000 hot air balloons each year. The alternatives: Persuade 30 000 motorists never to drive the car again Or 300 000 motorists to drive 1000 miles less each year. Widespread deployment of small scale renewables, and energy conservation.

21. 21 Hard Choices What can we as individuals do? What can you do collectively as a Church or Community? Visit the CRed WEB Site Sign a pledge to combat global warming help secure a sustainable environment for our children help reduce the adverse impacts of Global Warming help secure energy supplies for the future saving energy Adopting technical solutions Promoting Awareness Promoting appropriate renewable energy www.cred-uk.org St Pauls Church, Tuckswood

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23. 23 Conclusions Global Warming will affect us all - in next few decades Energy Security will become increasingly important. Inaction over making difficult decisions now will make Energy Insecurity more likely in future. Move towards energy conservation and LOCAL generation of energy and small changes to behaviour. It is as much about the individual’s response to use of energy as any technical measures the Government may take. Wind (and possibly biomass) are the only real alternatives for renewable generation in next 5 – 10 years. Otherwise Nuclear??? Even if we are not convinced about Global Warming – Energy Security issues will shortly start to affect us.

24. 24 WEBSITE Cred-uk.org/ This presentation will be available from tomorrow at above WEB Site: follow Academic Links Need to act now otherwise we might have to make choice of whether we drive 1.6 miles or heat an old person’s room Conclusions Are you up to the Challenge?: Will you make a pledge? Lao Tzu (604-531 BC) Chinese Artist and Taoist philosopher "If you do not change direction, you may end up where you are heading."

25. 25 Act of Commitment As we celebrate the goodness, diversity and wonder of God’s creation, we admit our collective guilt in allowing species to become so swiftly extinct, in depleting finite energy and raw materials, and in polluting the earth’s soil, water and atmosphere. Let us be ready to change the way we think and live. Through our lives and by our prayers Your kingdom come. Let us commit ourselves, as individuals and within our churches, to do all we can to heal and restore the damage people have caused to God’s earth, and to develop sustainable lifestyles, both for ourselves and to inspire others. Through our lives and by our prayers Your kingdom come. Let us commit ourselves to do all in our power to support church communities planning a better way of living in their localities. Through our lives and by our prayers Your kingdom come.

26. 26 Act of Commitment Let each of us commit ourselves to play our part and take what action we can to cherish God’s creation. Through our lives and by our prayers Your kingdom come. We pledge to pray and work for an environmentally sustainable and socially just world, in the interest of all earth’s Inhabitants, both present and future generations, and for the well-being and flourishing of the whole earth. Amen

27. 27 Animation Courtesy of Rob Hannington

28. 28 Wind Turbines are Incredibly Inefficient Efficiency: the ratio of the USEFUL work to the total energy available (or expended) Oxford English Dictionary Modern Wind Turbines convert 40 – 42% of available energy in the wind Modern Coal Fired Power Stations achieve 38% Sizewell B achieves 32% A car engine achieve 20 - 25% at best Compared to many other energy devices, Wind Turbines are Very Efficient

29. 29 Is Efficiency being confused with Capacity Factor? The Capacity Factor is a measure of how much use is made of an appliance compared to the amount that could be achieved at rated output over a year. Wind Turbines have a Capacity Factor of 22% for first generation turbines in the East to 30%+ for the latest generation machines. Capacity factors are higher in the West and as much as 40% or more in places in Scotland. Even in East Anglia, capacity factors of 50% are achieved in some months. A capacity factor of 30% does not mean it is only working for 30% of the time. It means that it could be working at 30% of output for 100% of the time, 100% of output for 30% of time, or any combination between. The fact the turbine is working does not mean that it is at its rated output. Large coal and nuclear stations are off line for up to 50 days at a time – loosing equivalent output of 700 + turbines. A car driven 10000 miles has a capacity factor about 4%. A washing machine used 5 times a week has a capacity factor of 3%.