The question to put to Alabama Power
The Capacity Reservation Charge is $5.41 per kW of installed capacity per month, assessed on the basis of the maximum power a solar customer might need from the grid if their system failed.
That framing raises an obvious question about storage. A battery changes what a household would need from the grid at any moment, and a system with backup capability changes it further.
Ask Alabama Power directly how a battery affects the Capacity Reservation Charge calculation: whether it is included in installed capacity, whether it changes the assessment, and in which direction.
Get that in writing before you decide on storage. An installer estimate of how the charge would be assessed is not the same as the utility statement of how it will be.
What storage does regardless
Setting the charge question aside, a battery in Alabama does real work. Exports are bought at roughly 3 to 5 cents per kWh against a retail rate closer to 16, a gap of around four to one.
A battery captures midday generation that would otherwise be exported at the low rate and releases it in the evening, upgrading each of those kilowatt hours to the retail rate you would otherwise pay.
That is a stronger economic argument than storage has in a retail-rate net metering state, where an exported and a consumed kilowatt hour are worth the same.
Ask for the system modelled with and without the battery so the incremental cost and incremental value both appear as numbers, and ask what round-trip efficiency the model assumed.
And the resilience it buys
Solar alone does not power a house during an outage. A standard grid-tied inverter disconnects when the grid goes down, for the safety of line workers.
Backup requires the battery plus an inverter and switching arrangement designed for it, specified in the quote as equipment rather than implied.
Ask which circuits would be backed up and for how long under a realistic load, and say explicitly whether air conditioning needs to be on that list. In an Alabama summer that is not a small question.
Ask how capacity reserved for outages interacts with everyday cycling for savings. Those two objectives pull against each other and you should be the one setting the balance.
Costing it out with the recurring charge included
The 30 percent federal Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025, so a cash or loan purchase receives no federal tax credit on the panels or the battery, and Alabama has no state solar tax credit.
Section 48E survives at 30 percent for third-party owners under leases and power purchase agreements, so ask what a provider claims and what reaches you in the rate.
What exists is retail value for self-consumed generation, 3 to 5 cents per kWh for exports, and the Capacity Reservation Charge against the whole arrangement.
Ask Alabama Power in writing how storage affects that charge, then ask for the system modelled with and without the battery on that basis.