If You need to apply for a loan , you have to write a letter to the bank. If you need to apply for a grant then you need to write a letter to the granter but in bank's case almost all letters are accepted where as in Grantor's case not much are accepted because of some weak points. If you think your English writing skills are very good enough to ensure that you get a grant but according to me you are wrong .
To avail the facility of grants you need professional grant writers who are specialist in providing you grants of any type like business grant, personal grant or a grant to start a non-profit organization.