Although a chemical propulsion mission to Uranus is possible, solar-poweredelectric propulsion is preferred because it allows a larger spacecraft mass. The proposed mission would launch in the years 2020–2023. Travel time to Uranus with solar-electric propulsion would be 13 years, with one Earth-flyby gravity-assist, with launch-windows from Earth of 21 days every year.
In early 2012, because of the FY2013 budget proposal, NASA flagship-class planetary missions were put on hold. U.S. plans to develop more planetary flagships beyond the $2.5 billion Mars Science Laboratory (MSL) are waiting until the budget situation changes. A cheaper mission might happen as a medium-class mission. There is also a study that recommended a New Frontiers orbiter for Uranus.