• August 4, 2015

    State Advisory Council Increases Confidence in Small Wind Turbines

    The year 2011 was a bad one for manufacturers of small wind turbines. Incidents across the United States raised questions about the quality of these systems. For example, at one site in New Jersey, a 10-kilowatt Xzeres turbine caught fire both at the nacelle at the top of the turbine and at the control unit located in the residence’s garage. At another site, three turbine blades separated from the rotor of an Enertech turbine. In California, the DyoCore company was accused of overrating the performance of its turbines to qualify for a heftier California Clean Energy Commission subsidy. Events like this generated bad publicity that undercut consumer confidence and led some states to suspend their incentive programs for small wind turbines.

    Regardless of whether these incidents were a result of a manufacturing flaw or an installation error, the damage was done—the technology was seen as unreliable and consumer confidence was shaken. Further investigations by some of the states indicated that many installed turbines were not performing up to manufacturers’ claims. Corrective action was clearly needed to preserve a future market for disbursed, small-scale wind turbines.

    States Pool Resources to Develop Best Practices and an Equipment List

    States and utilities that offered incentive programs to support small, distributed wind decided to pool their resources to address the turbine performance and reliability issues. The group, which initially consisted of California, New York, Oregon, and Wisconsin, concluded that maintaining individual lists of turbines that qualified for financial incentives was neither cost-effective nor an efficient way to foster a market for reliable turbines. Moreover, these independent state-approved turbine lists were not based on third party information about the performance and reliability of various turbines.

    The states therefore decided to form the Interstate Turbine Advisory Council (ITAC), which would be managed by the Clean Energy States Alliance. ITAC members established eligibility criteria for distributed wind turbines and set conditions that manufacturers had to meet to qualify for incentives. The goal was to create a set of requirements to ensure that consumers, utilities, and taxpayer funded incentive programs support safe and reliable wind turbines. At the same time, an existing effort by the American Wind Energy Association (AWEA) to certify small wind turbines, the AWEA 9.1 standard, was gaining momentum and third-party testing was becoming more widespread.

    ITAC created a set of eligibility requirements for distributed wind turbines. For small turbines with a rotor swept area of less than 200 square meters, ITAC accepts the AWEA small wind turbine standard and required third party-verified performance ratings and acoustic information. For medium-size wind turbines, which were not covered by the AWEA standard, ITAC’s eligibility requirements include performance tests, operational history milestones, or design evaluation. These review criteria for medium-size turbines were developed with the help of the Distributed Wind Energy Association and are serving as an interim standard until an international standard is developed and formally adopted.

    Energy Trust of Oregon, one of the founding members of ITAC, initially had limited experience with varied turbines and manufacturers because Oregon had a relatively modest market for small wind turbines. Chris Dearth, program director at Energy Trust, calls collaboration with colleagues across the country through ITAC invaluable. He says, “It has been extremely helpful to not only share information, but to also benefit from the market power provided by a multi-state collaboration to leverage improved industry performance.”

    The ITAC Unified List currently features nine small wind turbines and four medium wind turbines. Nine incentive programs across the United States support and use the Unified List. Current ITAC participating organizations are the Energy Trust of Oregon, Maryland Energy Commission,  Massachusetts Clean Energy Center, Minnesota Department of Commerce, New Jersey Clean Energy Program, NV Energy, NYSERDA, PG&E, and Vermont Clean Energy Development Fund.

    The ITAC listing criteria evaluate manufacturer business practices and consider, among other things, the strength and length of the turbine warranty, the manufacturer’s customer service record, and requirements for installer training. These additional review criteria add value to the ITAC list beyond certification, because even a certified turbine will not necessarily perform well if it is installed at a poor site or if the manufacturer fails to honor its warranty or provide maintenance services. ITAC collects consumer testimonials and shares turbine information from across the nation. Some state programs collect performance data from installations that they have supported; some make site visits before and after installations; and some maintain lists of qualified turbine installers. Together, the ITAC eligibility requirements and the additional ITAC-member installation information help create an equipment standards list that safeguard consumers as well as ratepayer and taxpayer funds.


    This blog post was originally published in the Clean Energy States Alliance (CESA)’s 2015 report “Clean Energy Champions: The Importance of State Policies and Programs.” This report provides the first-ever comprehensive look at the ways states are advancing clean energy and suggests how to further encourage clean energy growth.

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  • February 23, 2015

    Press Release: Interstate Turbine Advisory Council Adds Unique Maine-Made Wind Turbine to its Unified List

    Montpelier, VT – Today, the Interstate Turbine Advisory Council (ITAC), a project of the Clean Energy States Alliance (CESA), added the Pika T701 turbine to its Unified List of wind turbines.  The turbine joins several others on ITAC’s small wind turbine list; these turbines meet ITAC’s listing requirements, a unique set of eligibility criteria that address both the business practices of manufacturers and the performance and reliability of turbines with a rotor swept area of less than 200m2 (meters squared). The list is used by ITAC-member clean energy programs across the United States that have pooled resources to efficiently review and evaluate turbines. These programs provide customers with incentives for wind turbine installations. The list has been developed to boost consumer confidence in distributed wind and to ensure that taxpayer and rate-payer funding supports the installation of reliable and safe wind energy technology.

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  • July 24, 2013

    CESA ITAC Adds Bergey Excel 6 Turbine to is Unified List of Small Wind Turbines

    Collaborative Group of Public Clean Energy Programs Approves 5.5 Kilowatt Turbine Eligible for Participation in State Incentive Programs

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  • June 3, 2013

    ITAC-Approved Turbine Survives Hurricane Sandy and Saves Town $40,000 Annually

    The town of Hempstead, NY commissioned a Northern Power 100-kilowatt (kW) wind turbine to provide power to Long Island's only hydrogen-fueling station, where hydrogen fuel is generated on-site with an electrolyzer. The Northern Power 100 kW wind turbine (NP100-21), one of the first medium-sized turbines to be approved for the CESA Interstate Turbine Advisory Council (ITAC) Unified List.

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  • May 7, 2013

    CESA ITAC Adds Vergnet Turbine to Unified List of Medium Wind Turbines

    Interstate Turbine Advisory Council Adds Vergnet Turbine to its Unified List of Medium Wind Turbines

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  • January 28, 2013

    CESA ITAC Releases List of Eligible Medium Wind Turbines

    Collaborative Group of Public Clean Energy Programs Identifies Medium Wind Turbines Eligible for Participation in State Incentive Programs

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  • May 29, 2012

    Interstate Turbine Advisory Council Adds Eighth Small Wind Turbine to Unified List

    FOR IMMEDIATE RELEASE - Wednesday, May 29, 2012

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  • May 1, 2012

    Interstate Turbine Advisory Council Releases Unified List of Small Wind Turbines

    FOR IMMEDIATE RELEASE                                         

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  • January 20, 2012

    Interstate Turbine Advisory Council (ITAC) Issues Technical Assistance RFQ

    The Interstate Turbine Advisory Council (ITAC) is a CESA-managed alliance of clean energy programs and utility incentive providers working jointly to tackle the challenges, and promote the potential, of the small and midscale wind market.

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