Long Term Safe Harbor Storage: Risks and Best Practices Guidelines

Whitepaper focused on the risks associated with long-term storage of components.

Long term safe harbor storage


From its unique vantage point as a leading independent engineer in the wind industry, DNV GL is aware that many wind project developers in the United States (U.S.) have qualified, or are seeking to qualify, their 2018-2020 projects under the safe harbor provisions of the Production Tax Credit (PTC), and have purchased turbine components to meet the 5% expenditure threshold. Industry literature and DNV GL estimates indicate the U.S. wind industry will qualify over 4.5 GW of equipment through safe harbor procurement, which represents between 1,500 and 3,000 turbines that will be put in long-term storage, up to 3 years, pending installation and commissioning at a project site. Other developers have opted to begin manufacture of main transformers as an alternate means of qualifying projects for the PTCs.

This white paper is intended to inform owners of key technical risks and proactive steps that can be taken to mitigate such risks associated with long-term storage of components, and in turn avoid negative impacts on project financing as well as issues during project operations.

Long term safe harbor storage white paper