Editing Tidal power (section)

== US studies in the 21st century ==
The [[Snohomish County Public Utility District|Snohomish PUD]], a public utility district located primarily in Snohomish County, Washington State, began a tidal energy project in 2007.<ref>[https://www.snopud.com/PowerSupply/tidal/tidalnext.ashx?p=1513“Project Overview,”]{{dead link|date=January 2019 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> In April 2009 the PUD selected OpenHydro,<ref>[https://www.snopud.com/PowerSupply/tidal/tidalbg/tidalopenhydro.ashx?p=1511“OpenHydro Selected,”]{{dead link|date=January 2019 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> a company based in Ireland, to develop turbines and equipment for eventual installation. The project as initially designed was to place generation equipment in areas of high tidal flow and operate that equipment for four to five years. After the trial period the equipment would be removed. The project was initially budgeted at a total cost of $10&nbsp;million, with half of that funding provided by the PUD out of utility reserve funds, and half from grants, primarily from the US federal government. The PUD paid for part of this project from reserves and received a $900,000 grant in 2009 and a $3.5&nbsp;million grant in 2010 in addition to using reserves to pay an estimated $4&nbsp;million of costs.  In 2010 the budget estimate was increased to $20&nbsp;million, half to be paid by the utility, half by the federal government. The utility was unable to control costs on this project, and by October 2014, the costs had ballooned to an estimated $38&nbsp;million and were projected to continue to increase. The PUD proposed that the federal government provide an additional $10&nbsp;million towards this increased cost, citing a [[gentlemen's agreement]].<ref>[https://www.heraldnet.com/news/pud-claims-gentlemens-agreement-over-tidal-project-funding/ “PUD claims 'gentleman's agreement over tidal project funding',”] Everett Herald, Oct 2, 2014,</ref> When the federal government refused to pay this, the PUD cancelled the project after spending nearly $10&nbsp;million from reserves and grants.  The PUD abandoned all tidal energy exploration after this project was cancelled and does not own or operate any tidal energy sources.