Supporting documents - Renfrewshire Council

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© Green Cat Renewables Ltd GLENLORA WIND TURBINE In the Climate Change Programme, the Scottish Government outlines its vision for Scotland: ‘We want Scotland to become recognised as the best small country in the world and one of the ways we can do that is through our actions to tackle climate change. The Scottish Executive is committed to playing its part in full, encouraging others to do likewise … we have a moral responsibility to reduce our carbon footprint ....” 3.1.3 Baseline Data The SNH Technical Guidance Review suggests that carbon dioxide savings associated with any wind project development in the UK should be calculated assuming that wind energy displaces carbon emissions produced per unit of electricity generated from fossil fuel sourced grid mix. The new guideline explains that wind power does not displace renewable and nuclear generation and therefore that the counterfactual factors to use should be the fossil fuel mix factor rather than the grid mix. The annual carbon dioxide emissions saving of a wind turbine are estimated as: CO2 emissions saving = total electricity generation expected [MWh] x Emission Factor of Displaced Generation [tCO2/MWh] Capacity Factor In calculating the total electricity generation expected, a wind project capacity factor has to be determined. This is the ratio of the actual energy generated to the theoretical amount that the machine would generate if running at full rated power during a given period of time. The average capacity factor observed for the onshore windfarms in the UK between 2003 and 2007 is 27.3% 3 . The Scottish average is believed to be better thanks to higher wind speeds blowing more frequently. The SNH Technical Guidance Review suggests that a 30% utilisation rate should be used in the absence of wind data for the actual site. It is believed that, for this location, this figure represent a realistic estimate when accounting for the carbon emissions due to back‐ up sources of electricity as suggested in the new SNH Guidelines. The new approach presented also suggests including CO2 emissions from peatland potentially disturbed. The immediate area of proposed turbine locations and access track is rough grazing. This area includes areas improved grassland, unimproved grassland and acid flushes interspersed with conifer shelter belts. No significant volume of peat disturbance would be involved and therefore no further reduction of the capacity factor has been applied. Project CO2 emission savings The calculation was carried out following the new approach as presented in the Appendix 2 of the SNH Guidance Review. This suggests that the carbon saving from the wind project should be calculated using the fossil fuel sourced grid mix as the 3 DUKES Annual tables ‐ Capacity of, and electricity generated from, renewable sources (DUKES 7.4) http://www.berr.gov.uk/whatwedo/energy/statistics/source/renewables/page18513.html, accessed November 2008 Page 40 of 173
© Green Cat Renewables Ltd GLENLORA WIND TURBINE counterfactual. At the present time, it is thought that discussion is ongoing between the British Wind Energy Association (BWEA) and the Advertising Standard industry (ASA) regarding updated values to publish. The emissions factors used for this application have been published in the SNH guidance review and are commonly used in the industry. Power Generation Characterisitcs Number of turbines 1 Turbine Capacity 0.8MW Capacity Factor 30% Lifetime (conservative) 25 years Annual Energy Output ~2,100 MWh/yr Counterfactual Emissions Factors Fossil fuel mix generation 0.607 tCO2 /MWh Project estimated CO2 emission savings over: Fossil fuel mix generation ~1,280 tCO2 /yr Assuming 1 tCO2 = 0.27 tC: Total Project Estimated Carbon saving over: Fossil fuel mix generation ~8,600 tC /25yr Carbon balance Generally, the total Carbon loss from a wind project can be expressed as: Ltot = Llife + Lback+ Lfix + Ldirect + Lindirect+ LDOC + Lforest + Limprovement Where, Ltot is the total loss of Carbon from a windfarm development in tonnes. Llife is the total loss of CO2 emission savings due to production, transportation, erection, operation and dismantling of the wind farm. In the absence of a specific life cycle assessment for the turbine, the SNH Technical Guidance Review recommends using the following equation: Llife = 138 + (286xCturbine), where Cturbine is the capacity of the machine. The lifecycle CO2 emissions of the turbine can be estimated to be 370 tonnes which corresponds to a payback time of around 3.5 months against the fossil fuel mix generation. Lback is the total loss of CO2 emission savings due to backup power generation. The SNH Technical Guidance Review indicates that carbon loss from wind farms due to backup generation requirements become relevant if wind power contributes more than 20% to the national grid. It is estimated in the guidelines that the contribution of wind Page 41 of 173
Page 1 and 2: een GLENLORA WIND TURBINE Environme
Page 3 and 4: Environmental Statement Prepared By
Page 5 and 6: Preface This Environmental Statemen
Page 7 and 8: Table of Contents 1 Description of
Page 9 and 10: © Green Cat Renewables Ltd GLENLOR
Page 11 and 12: 1.1.1 Wind Energy © Green Cat Rene
Page 15 and 16: Figure 1.1.1 - Site Location © Gre
Page 19 and 20: Figure 1.1.4 - Indicative hardstand
Page 31 and 32: The Renfrewshire Local Plan 2006 ©
Page 33 and 34: Objectives © Green Cat Renewables
Page 37 and 38: 2 Alternatives Considered 2.1 Site
Page 39: 3 Environmental Studies 3.1 Climate
Page 43 and 44: 3.2 Local Economic Benefit 3.2.1 In
Page 45 and 46: Existing Recreational Provision ©
Page 47 and 48: 3.2.5 Predicted Impact © Green Cat
Page 51 and 52: 3.3 Ecology/Fauna 3.3.1 Introductio
Page 57 and 58: 3.3.5 Survey Techniques Bird Survey
Page 59 and 60: Mammals © Green Cat Renewables Ltd
Page 67 and 68: 9 2337 10 2345 1 3 11 0005 1 12 001
Page 77 and 78: 3.3.10 Summary of Main Conclusions
Page 79 and 80: 3.4 Landscape and Visual Impact 3.4
Page 83 and 84: Sensitivity Landscape Component ©
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© Green Cat Renewables Ltd GLENLOR
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Cumulative Visual Impact on Views
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3.5 Noise 3.5.1 Introduction © Gre
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Indirect Effects within 10km © Gre
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3.8.4 Initial Responses © Green Ca
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Structural failure ‐ The complete
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3.10.4 Other Risks © Green Cat Ren
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GLENLORA WIND TURBINE 3.11 Items Sc
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Cumulative Route Analysis (All rout
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A737 Description Section and Approx
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Supporting documents - Renfrewshire Council

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