I don't think I can answer by yes or no because in your question you mentioned the word “rebate”. I have not mentioned the word “rebate”.
What the amendment does is that, when a purchaser of an emission allowance from another person acquires that emission allowance, they will have to self-assess the GST/HST on the value of that allowance. When they are doing their return, they are going to do their self-assessment, and then they are going to look at the use of that allowance. That allowance will likely be used in the course of their commercial activity and entitle them to an ITC of the value of the tax they would have self-assessed. At the end, they will remit nothing.