Yes, both a solar generator and solar photovoltaic panels qualify as qualified solar electric property costs and are eligible for the energy credit, assuming that you meet the other requirements.
Click here to see an Energy Department publication on what qualifies for the credit. See "What expenses are included?" at the bottom of the first page for details.
The FAQs address your situation further:
"A solar PV system does not necessarily have to be connected to the electric grid for you to claim the residential federal solar tax credit, as long as it is generating electricity for use at your residence."
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