Texas Health and Safety Code - HEALTH & SAFETY § 392.007. Amount of Grant

(a) The amount the commission shall award for each vehicle being replaced is up to 80 percent, as determined by the commission, of the total cost for replacement of a heavy-duty or light-duty diesel engine.

(b) The commission may revise the standards for determining grant amounts, as needed to reflect changes to federal emission standards and decisions on pollutants of concern.