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1 Small Wind Project Planning North Central Electrical League (NCEL) Business Breakfast MN Division of Energy Resources Lise Trudeau, Engineer November.

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Presentation on theme: "1 Small Wind Project Planning North Central Electrical League (NCEL) Business Breakfast MN Division of Energy Resources Lise Trudeau, Engineer November."— Presentation transcript:

1 1 Small Wind Project Planning North Central Electrical League (NCEL) Business Breakfast MN Division of Energy Resources Lise Trudeau, Engineer November 10, 2011

2 2 Project Economics The rate of return on investment for renewables depends on: –Site –Equipment –Operation & Maintenance cost –Financing –Available incentives

3 3 Getting Started Is there a good wind resource?  MN wind speed verification tool > Clean Energy > Wind > Small WindSmall Wind Uses state wind map data at 98ft (30 m) Most accurate when using site coordinates For initial consideration only, need on-site assessment by a professional wind site assessor

4 4 Wind Speed at 100 ft hub height

5 5 Project Siting Wind Resource Assessment Wind shear - drag produced by terrain Displacement height - effective ground level above nearby obstacles (treeline) Rayleigh Distribution – frequency that certain wind speeds occur in a year Wind Rose – prevailing / seasonal wind direction

6 6 Project Siting Wind resource and tower height strongly affect payback AEO = D 2 V 3 AEO= annual energy output, (kWh/yr) D = rotor diameter, ft V = wind velocity, mph

7 7 Project Siting Recommend minimum tower height: 100ft if there are no trees or structures nearby, Lower blade at least 30ft above obstacles within 500 feet of tower.

8 8

9 9 Project Siting additional considerations Proximity to interconnection site, circuit breaker, and inverter Location of well, septic tank and field, other underground utilities Soil type, depth of water table & bedrock Site access for concrete truck and crane

10 10 Permitting Permitting by township, municipality or county Usually require a variance for towers over 30 feet Inform permitting officials early of any plans If no wind ordinance exists, you may want to introduce a model ordinance

11 11 Interconnection Minnesota has uniform statewide guidelines for utility interconnection. Customer must pay for any metering and distribution line upgrades $300,000 of liability insurance required Electrical inspection by state inspector Utility anti-islanding test

12 12 Metering Bidirectional meter is typical for net-metering RECs – need revenue grade meter to register in MRETS Some utilities may require separate meters for their own purposes MR requires utilities to report energy delivered to and from the facility (not total energy produced)

13 13 O&M Cost between 1 – 2% of installation cost, on average over life of turbine Depends on how much maintenance you can do yourself Varies with manufacturer Ask other turbine owners! Turbulent wind resource leads to increased maintenance costs

14 14 Other ongoing expenses Insurance <40kW: $300k liability required 40kW to 250kW: $1M liability with coverage for utility line workers Additional meter fee, if applicable Net-metering fee

15 15 Selecting an Installer NABCEP Certified Small Wind Installers

16 16 Selecting an Installer Directory of small wind companies theCleanEnergyBuilder.com Developed by SWIF and CERTs Questions to ask a prospective installer: “Hiring a Renewable Energy Contractor” at > Clean Energy > Wind > Small Windwww.energy.mn.govSmall Wind

17 17 Selecting a Turbine 2010 Wind Generator Buyer's Guide, Ian Woofenden and Mick Sagrillo, June/July 2010 issue of Home Power MagazineHome Power Magazine Ask other turbine owners!

18 18 Sizing the turbine Nameplate Capacity vs. swept area –Blades are the energy collector Woofenden and Sagrillo, Home Power, 2010 * *

19 19 Independent Turbine Testing Small Wind Certification Council Rated annual energy at 5 m/s Sound level (not exceeded 95% of time, 60 ft from avg 5 m/s) Rated power at 11 m/s National Renewable Energy Laboratory ependent_testing.html ependent_testing.html

20 20 Federal Residential Renewable Energy Tax Credit Small Wind Investment Tax Credit (ITC) Treasury Grant in lieu of ITC USDA Rural Energy for America Program (REAP) USDA Value Added Producer Grant (VAPG) Policies and Incentives for small wind projects

21 21 Federal (continued) Accelerated Depreciation Clean Renewable Energy Bonds Policies and Incentives for small wind projects

22 22 State of Minnesota Residential & Small Business Rebates Net Metering Policy (< 40kW) Sales Tax Exemption Property Tax Exemption Accelerated Depreciation Sustainable Agriculture Loan Program Agricultural Improvement Loan Program Policies and Incentives for small wind projects

23 23 Residential Renewable Energy Tax Credit Federal tax credit on personal income Wind systems < 100kW 30% of installation expenses no maximum if placed in service after 12/31/08 Excess credit may be carried forward Consult your tax advisor for more info Policies and Incentives for small wind projects

24 24 Small Wind Investment Tax Credit (ITC) Federal corporate tax credit wind systems < 100 kW 30% of installed cost for equipment installed from January 1, 2008 through December 31, Consult your tax advisor for more info Policies and Incentives for small wind projects

25 25 Treasury Grant in lieu of ITC Cash grant instead of tax-credit Same incentive level as ITC Commercial, Industrial, Agricultural (not for residential or non-taxable) Construction must begin 2009 – 2010 and be completed before Can’t be combined with PTC or ITC. Policies and Incentives for small wind projects

26 26 USDA Rural Energy for America Program (REAP) Non-metro farms and small businesses Also eligible: electric co-ops and rural utilities limited to 25% of a proposed project's cost (maximum grant is $500k) loan guarantee up to $10 million Grant + loan up to 75% of costs Policies and Incentives for small wind projects

27 27 USDA Rural Energy for America Program (REAP) continued Funding priority given to grants of $20k or less and combined loan and grant requests Submit application early – funding may run out. For more information, go to and click on REAP Policies and Incentives for small wind projects

28 28 USDA Value Added Producer Grant (VAPG) farms and producer groups Funding for feasibility study, business plan, and/or legal evaluation. $100,000 maximum Minimum 50% match with non-federal $ For more information, go to and click on VAPG Policies and Incentives for small wind projects

29 29 Clean Renewable Energy Bonds Local Gov’t, State Gov’t, Tribal Gov’t, Municipal Utility, Rural Electric Co-op Low- or no-interest Awards granted from smallest to largest. Smaller requests have higher chance of award. Max term: 16 years [on 3/2010] at current investor interest rates (calculated daily) maximum term posted daily at: https://www.treasurydirect.gov/GA- SL/SLGS/selectCREBDate.htm https://www.treasurydirect.gov/GA- SL/SLGS/selectCREBDate.htm Policies and Incentives for small wind projects

30 30 Accelerated Depreciation - Federal Five year depreciation schedule for wind Consult your tax advisor for more information. See also: IRS Publication 946 “How to Depreciate Property” at And MACRS + Bonus Depreciation ( )www.dsireusa.org Policies and Incentives for small wind projects

31 31 Accelerated Depreciation - State Five year depreciation schedule for wind Consult your tax advisor for more information. See also: Policies and Incentives for small wind projects

32 32 Net Metering Limited to generators under 40kW For generators using this rate, utility pays average retail rate for the customer class Customer opts for either utility check for NEG paid at the end of each month or customer may opt to carry a credit for NEG on their bill and have credit paid out on request. Effectively like using the grid as a battery back up – Customer must pay for extra meter charge Policies and Incentives for small wind projects

33 33 Exempt from MN Sales Tax: materials used to manufacture, install, construct, repair or replace wind-energy systems (including rental equipment) buyers complete MN Dept of Revenue Form ST3 "Certificate of Exemption" sellers keep the form in their files for tax reference see: Policies and Incentives for small wind projects

34 34 Exempt from MN Property tax: all real and personal property of wind- energy system land on which wind system is located remains taxable Policies and Incentives for small wind projects

35 35 Sustainable Agriculture Loan Program Up to $40,000 per farmer Up to $160,000 on joint projects 3% interest, up to 7 year term See: s/esaploan.aspx s/esaploan.aspx Policies and Incentives for small wind projects

36 36 Agricultural Improvement Loan Program On-farm wind up to 1 MW Interest Rate 4.5% (as of March 2009) Up to 10 year term Admin by MN Dept. of Ag. through MN Rural Finance Authority (RFA) RFA participation limited to 45% of the principal or $300,000, whichever is less See: nt.aspx and /agfinance.aspx nt.aspx /agfinance.aspx Policies and Incentives for small wind projects

37 37 Public Building (e.g. school): Federal: Clean Renewable Energy Bonds (CREBs) Residential Renewable Energy Tax Credit ITC or Treasury Grant Accelerated Depreciation USDA Grants - REAP and VAPG State: State Rebate Accelerated Depreciation Sustainable Agriculture Loan Program Agricultural Improvement Loan Program Policies and Incentives for small wind projects

38 38 Personal Installation: Federal: Clean Renewable Energy Bonds (CREBs) Residential Renewable Energy Tax Credit ITC or Treasury Grant Accelerated Depreciation USDA Grants - REAP and VAPG State: State Rebate Accelerated Depreciation Sustainable Agriculture Loan Program Agricultural Improvement Loan Program Policies and Incentives for small wind projects

39 39 Small Rural Business : Federal: Clean Renewable Energy Bonds (CREBs) Residential Renewable Energy Tax Credit ITC or Treasury Grant Accelerated Depreciation USDA Grants - REAP and VAPG State: State Rebate Accelerated Depreciation Sustainable Agriculture Loan Program Agricultural Improvement Loan Program Policies and Incentives for small wind projects

40 40 On-farm installation : Federal: Clean Renewable Energy Bonds (CREBs) Residential Renewable Energy Tax Credit ITC or Treasury Grant Accelerated Depreciation USDA Grants - REAP and VAPG State: State Rebate Accelerated Depreciation Sustainable Agriculture Loan Program Agricultural Improvement Loan Program Policies and Incentives for small wind projects

41 41 For more information, go to Database of State Incentives for Renewables and Efficiency (DSIRE) Policies and Incentives for small wind projects

42 42 Additional comments and questions: > Clean Energy > Wind > Small WindSmall Wind (MN only) TTY


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