From the IRS: "You may be eligible for a credit under Section 30C(c), if you purchased alternative fuel vehicle refueling property before January 1, 2017 and placed it in service in the year in which you claim the credit. For individuals (not for business purposes) the credit is limited to $1,000 for all qualified property at a location. Eligible alternative fuels are hydrogen, electricity, and other qualified alternative fuels as defined in Section 30C(c)."
More details here: https://www.irs.gov/credits-deductions/individuals/alternative-fuel-vehicle-refueling-property-credi...
