It facilitates the obtentions of tax-free diesel fuel for those who have small generators to generate electricity. In that sense, it's a relieving measure. That said, it does not have a fiscal impact, since there was another relief available for end-users, but they have to obtain the diesel fuel with the tax embedded first before claiming a refund.
As a result, you're facilitating the distribution of tax-free fuel for the purpose of generating electricity, as currently provided under the law.