Turbine sizing v1.0
- 2. Is bigger really better ? As turbines continue to increase in size, what are the limits to up scaling ? Presentatie EnerVest 06/10/2012 Philippe Vermeulen General Manager
- 3. LEGAL NOTE This presentation contains target figures and forecast data for EnerVest AG, Munich. The entire information is a non-binding strategy without warranty. Neither EnerVest AG nor its bodies nor its subsidiaries will accept any liability for the correctness or the completeness of this information. Particularly, the aforementioned companies may not be held liable for the success of forecasted targets. All information contained in this presentation is strictly confidential. Any distribution or propagation or otherwise making available of the information contained to third parties in full or in part requires the prior written authorization by EnerVest AG, regardless of the form of transmission or the content.
- 4. EnerVest global Who are we? Founding in 1996 by Hannes Hofer • 15 experience in wind sector Domains Developer, owner and operator of • Wind park • Photo-Voltaïk park Active in Germany, Belgium, Sweden, Poland,….. • Germany: 120 MW in operations (= 55 turbines) • Belgium: 300 MW in development (40 projects)
- 5. 05 ENERVEST – DEVELOPMENT PIPELINE Sweden: expansion 400 MW UK: expansion 200 MW Ireland: expansion 200 MW Germany: currently 400 MW Poland: currently 200 Belgium: currently 300 MW MW Turkey: currently France: currently 100 100 MWatt MW Ethiopia: currently 200 MW
- 6. Elements of selection for turbine sizing Development site dimensioning 1. Minimum distances to residences 1. Environmental impact of turbines for inhabitants 1. Local legislation minimum distance to urban structures 2. Local legislation maximum noise and shade impact of development 2. Site dependant restrictions 1. Minimum distance from nature zones such as Habitat 2000 zoning 2. Minimum distances from high tension lines and other utility infrastructure 3. Minimum safety distance of turbines to risk area’s such as roads, industrial complexes 4. Minimum distance to aviation radar and meteorological radars 5. Aviation flight sealing 3. Landscape impact of development zone 1. Landscape integration of development 2. Visual impact
- 7. Noise impact
- 8. Shade impact
- 9. Elements of selection for turbine sizing Development site restriction map
- 10. Elements of selection for turbine sizing Selecting IEC class for turbine I II III IV WTG Class Vave average wind speed at hub-height 10.0 8.5 7.5 6.0 (m/s) V50 extreme 50-year gust 70 59.5 52.5 42.0 (m/s) I15 characteristic 18% turbulence Class A I15 characteristic 16% turbulence Class B α wind shear exponent 0.20 Combining available wind data and standard IEC classification
- 11. Elements of selection for turbine sizing Site specific factors 1. Road access 1. Transport of individual parts of the turbine to site 2. Condition of road infrastructure from point of delivery to site 3. Transport to primary point of delivery 4. Cost of additional road infrastructure 2. Icing 3. Topography to and at site 1. Indication of foundation type Photo courteous of re-power 2. Access to and from site 4. Grid connection 1. Type of connection 2. Location of connection point 3. Estimated cost of connection
- 12. Road access
- 13. Grid connection
- 15. Benchmarking ideal turbine for site 1. Combining the results of the three first steps 2. Asses site minimum turbine amount or rated power to be profitable 3. Estimate date of full permit approval and grid connection approval 4. Look at current ready available turbine types at that date
- 16. Current commercial available turbine types Nominal Rotor Hub height Number of Cost / Mw OEM power diameter blades installed contract 15 years / Kwh + fixt amount/turbi ne 500-750 Kw* 50-65 m 40-50 m 2-3 1.2 M€/Mw 0.0055€cents/ Kwh 1 -1,5 Mw 60- 75 m 60-70 m 3 1 M€/ Mw 0.0045€cents/ Kwh 2-3 Mw 70-114 m 80-100 m 3 0.9 M€/Mw 0.0050€cents/ Kwh 7 Mw ** 126-164 m 105-135 m 3 1.25 M€/Mw 0.0050€cents/ Kwh •*Turbine type produced for UK market and private use •** Mainly focused on off-shore deployment 1. Combining all factors currently in most European countries planning is focused on 2-3 Mw type turbines 2. UK and Ireland and African projects focus on 1-1.5 Mw typr turbines 3. 7 Mw turbines are mostly showcase and single project developments
- 17. Balancing number of turbines on development site Using small turbines on site Negative factors Positive factors • Easier transport to site • Higher visibility impact on landscape • Smaller fall out rate • Cumulative effect of noise and shadow • Easier active balancing • Higher cost of infrastructure • Lower hub height • Higher probability of grid effects • Proven technology • Higher cost/Mw installed • OEM contracts on 15 years ‘standard’ • OEM cost higher / Mw installed • Risk assessment at Financing on base ‘proven’ technology • Lower park efficiency due to wake loss
- 18. Balancing number of turbines on development site Using commercial benchmark turbines on site Positive factors Negative factors • Lower impact on landscape • Possible problems of transport to site • Cumulative effect of noise and shadow • Higher fall out rate / Mw installed • Balanced cost of infrastructure /Mw installed • Easier active balancing • Lower probability of grid effects • Higher hub height • Balanced cost/Mw installed • Proven technology • Lower OEM / Mw installed • More production balancing due to source noise and shadow issues • OEM contracts on 10 years ‘standard’ • Better park efficiency
- 20. Algemeen • Philippe Vermeulen • Philippe.vermeulen@enervest.eu • +32 474 43 28 35 Enervest Belgium BVBA Beukenlaan 82 9051 Gent (SDW) Belgium@enervest.eu