Per IRS Instructions for Form 5695, page 1:
Nonbusiness energy property credit is available for 2018 and 2019. Recent legislation has made the nonbusiness energy property credit available for both 2018 and 2019. All references to the credit have been reinserted in these instructions. The credit had expired at the end of 2017. You may claim the nonbusiness energy property credit on your 2019 return if you meet the 2019 criteria. See Nonbusiness Energy Property Credit (Part II) and Part II, Nonbusiness Energy Property Credit, later.
You may also now claim the credit for 2018 if you meet the criteria for that year, but most taxpayers will need to file their 2018 Form 5695 with an amended return (Form 1040-X) to claim the credit for 2018. See Form 1040-X and its instructions at IRS.gov/Form1040X for details. 2018 Form 5695 and its instructions are available at IRS.gov/Form5695.
Nonbusiness Energy Property Credit (Part II)
You may be able to take a credit equal to the sum of:
To enter Form 5695 information in TaxAct: