Need based grant are awarded based on financial need. Like scholarships, grants do not have to be repaid.
The eligibility requirements for a need based grant focus on your financial situation and the amount of funding you receive for college. To apply for a need based grant, you will need to submit the Free Application for Federal Student Aid if the grant is government-funded. Privately funded grants will have other income verification requirements. Some grants will disqualify students who are also receiving funding from other sources, are over a set income threshold, or who already have a college degree. Also, you must be a U.S. citizen or legal resident to be eligible for most need based grants.
Visit their website to check out various need based grants. http://oedb.org/need-based-grant/