Dear XXXXX -
First, you earned the credits over a 10 year period so you have between 5 and 15 years to use at least a portion of the credits.
These credits are not transferable and must used by the recipient. Without knowing your complete tax situation it is difficult to provide answers. A discussion with a tax professional may assist you in your planning.
For example, you may be able to defer or accelerate certain income or deductions that may change your tax position and allow a partial benefit of the credits. Also, as you know, tax laws are always changing so all may not be lost.