Consulting on the NSW Small Wind Turbine Consumer Guide Demian Natakhan, Enhar 15 th November 2010 NSW Small Wind Round Table , Sydney www.enhar.com.au
Scope of the NSW Consumer Guide Chapters: • Introduction • Assessing your site • Choosing a Turbine • Financial Considerations • Development approval • Installation, finding an installer • Case Studies • References and Glossary • Appendix A: Your Wind Turbine Project Checklist • Appendix B: List of Small wind turbines • Appendix C: About wind roses • Appendix D: Noise Assessment Guide www.enhar.com.au
NSW Consumer Guide to Small Wind Generation Who it is for: Consumers considering purchasing an inverter-connected wind turbines 1-10kW, in NSW • Focus on grid connected systems – Off-grid consumers are referred to off-grid guides for issues such as sizing battery storage • Predominantly, ground mounted turbines in 1-10kW range in rural locations • Roof-mounted and urban applications also covered • Mid sized wind turbines up to several 100kW for community groups • Readers without technical know-how, no prior knowledge • Readers who may be comparing solar vs wind options www.enhar.com.au
Introduction Small Wind Turbine • Definitions, – principles, system overview Guyed Tower Gross Meter Grid Switch connect Grid Inverter supply Usage Wind Meter turbine Your power Cable Trench Controller usage (Underground) • Frequently asked questions – Is my site suitable? – How do I choose a turbine? – How much energy will I generate? – What is the likely payback period? – What funding is available in NSW? – Do I need development approval and how do I get it? – How do I sell my generated electricity? www.enhar.com.au
Assessing your site • Estimating your resource – online sources, local indications – Probably sufficient for very high resource sites • Wind monitoring: for marginal and low resource sites NRG anemometer and vane Davis Instruments APRS anemometer and vane anemometer and wind vane product code 7911 www.enhar.com.au
9m wind monitoring mast with Davis equipment Assessing your site www.enhar.com.au Wind monitoring: Case Study •
Choosing a Turbine Consider your power demand and your estimated/measured site wind speed, then size turbine to meet your demand (see Figure 2.1) Review the wind turbine types on the market (see Appendix B) Select one or more turbine(s) which may suit your needs Ask the manufacturer of the selected turbine(s) to identify a local installer qualified to install their turbines Contact the installer to request information about their services Arrange for the installer(s) to visit your site Obtain full quotations from the installer(s) for the chosen turbine(s) Confirm your turbine type in light of these quotations www.enhar.com.au
Choosing a Turbine Alternative approach Contact your local wind turbine installer Find out what turbine type and size your local installers offer Select your turbine type and size in consultation with your installer, to suit your site and power demand www.enhar.com.au
Choosing a Turbine • Approved products and product standards • Power curve issues to watch out for • Safety and reliability • Wind Turbine Noise – Guidance under development by NSW Department of Planning – Include noise data to IEC61400-11 in turbine listing • Choosing a tower type and tower height • Choosing an inverter • Urban wind turbines – Special considerations www.enhar.com.au
Choosing a Turbine – Financial viability www.enhar.com.au
Economic and cost considerations • Solar Bonus Scheme – Revised tariffs – Scheme duration – What happens after Scheme expires? – Gross or Net metering ? • Economic comparison between Solar and Wind – Cashflow analysis – Net present value analysis www.enhar.com.au
Economics of small wind projects 3kW wind turbine economics 35,000 Assumptions: 8 m/s Capital cost $26,600 after initial RECs 25,000 7.2 m/s Earns 20c/kWh gross tariff until 2016 6.3 m/s Net tariff thereafter at 23 c/kWh 15,000 Cumulative cashflow ($) 20 year project life 5.4 m/s 5,000 Re-deeming for 5 years at year 15 4.5 m/s 0 2 4 6 8 10 12 14 16 18 20 -5,000 -15,000 -25,000 -35,000 Time [Years] www.enhar.com.au
Economics of small wind projects Wind and Solar Economic Comparison FiT Rate 20c/kWh $40,000 Assumptions: Gross tariff 20c/kWh until 2016 $30,000 Net feed in tariff at 23c/kWh from 2017 onwards 3 kW Wind Turbine $20,000 Discount rate 6% 10 kW Wind Turbine 20 year NPV Analysis Re-deeming for further 5 years after 15 years $10,000 3kW solar 10 kW Solar $0 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 -$10,000 -$20,000 -$30,000 -$40,000 Annual Average Wind Speeds [m/s] www.enhar.com.au
Economics of small wind projects Wind and Solar Economic Comparison Gross FiT Rate 60c/kWh $100,000 Assumptions: $80,000 Gross tariff 60c/kWh until 2016 3 kW Wind Turbine Net feed in tariff at 23c/kWh from 2017 onwards $60,000 20 year NPV Analysis Discount rate 6% 10 kW Wind Turbine $40,000 Re-deeming for further 5 years after 15 years 3 kW solar 10kW Solar $20,000 $0 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 -$20,000 -$40,000 Annual Average Wind Speed [m/s] www.enhar.com.au
Development Consent • Refer to NSW proposed planning provisions – Exempt development – Complying development • General guidance if development approval is required www.enhar.com.au
Installation • Finding an installer • Training and qualifications of small wind installers • Grid connection procedures – Approved inverter; Australian Standards – Gross meter and net metering options www.enhar.com.au
Case Studies Hornsbury – 15KW turbine for rural Milton - 5.8kW wind turbine for fire station home / farm 60kW Westwind, Breamlea More wanted! Questionnaire distributed & on enhar website Randwick Council Crookwell 10KW turbine Community 2.4KW www.enhar.com.au turbine
Appendix B: List of small wind turbine suppliers • Wind turbine products available through resellers in NSW – Mostly! • Data table includes specifications, prices, contact details – Prices are turbine excluding installation, unless fully installed price ranges are published www.enhar.com.au
Next steps for The Guide Feedback Forum today 3pm Your written comments received by 19 th November via consultation form please to info@enhar.com.au Check www.enhar.com.au for documents and updates THANK YOU www.enhar.com.au
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