I have a general business tax credit carryforward and also a current home solar credit. Turbotax is using the solar credit instead of the general business.

You can't change it.

If you'll look at the instructions for Line 10b for individuals in the Instructions for Form 3800, residential energy credits on Form 5695 are applied before general business credits:

Enter the amount from Form 1040, 1040-SR, or 1040-NR, line 19; and Schedule 3 (Form 1040), lines 2 through 5 and 7. 

The residential energy credit will be entered on line 10b of Form 3800, before the allowable business credit is computed. 

Thanks.        I clearly erred about the order of usage for these credits by just using FIFO.     I appreciate your accurate response with reference to the IRS' forms!