The phrase "remained for a year" is correct and usable in written English.
You can use it to talk about someone or something staying in the same place or position for a period of twelve months. For example: "The family remained in the same house for a year, before they decided to move."
First, the state militia was called in, and then the 12th U.S. Cavalry, which remained for a year.
In December 2009, another Eye-in-the-Sea Eye-in-the-Sea Eye-in-the-Sea Eye-in-the-Seathe Monterey camera, off the coast of California, wasre it remained for a year.
The children, aged between eight and 14, were driven away by police to new homes, where they remained for a year, while Nzolameso fought court case after court case to be rehoused and reunited with her family.
Two months after his release from prison, having embraced Catholicism, he was appointed teacher of French and art at an old school in the village of Stickney, near Boston, where he remained for a year, long enough to complete his collection of religious poems, Sagesse.
The King's remained for a year to support a tense peace until they left for Cyprus.
Six months later, it was sent to Newry before marching to Dublin, where it remained for a year.
We got what was called "exceptional leave to remain" for a year.
He allowed Rockefeller, in writing, a year's option on the busts; they were to remain for a year in the Rockefeller mansion as non-paying guests.
The new portraits will be formally unveiled by the principal, Guardian columnist and former Observer editor in chief Will Hutton, and will remain for a year.
Joseph Sawicki Jr., Suffolk's comptroller, said that he expected the bond ratings to remain for a year, enabling the county to save an estimated $500,000 in interest payments over the life of five bond offerings this year.
As for the installation, it will become the first Madison Square Park commission to travel: Ms. Genger will reinstall it in October at the deCordova Sculpture Park in Lincoln, Mass., where it will remain for a year.
