Solar Guppy
Red Cobra Guppy
This also makes it clear that you can take the credit any year you add new equipment.
The credit is available for qualifying expenditures incurred for installing new clean energy property in an existing home or for a newly constructed home. This credit has no annual or lifetime dollar limit except for fuel cell property. Taxpayers can claim this credit each tax year they install eligible property until the credit begins to phase out in 2033.
That is most helpful, interesting that the IRS has not updated the language of the form instructions