Incentives for our Nation's Veterans in Energy Sustainability Technologies or the INVEST Act This bill allows the work opportunity tax credit to be used for the hiring of a specified veteran who works in a field of renewable energy. A specified veteran means any veteran who is certified as (1) having received a credential or certification from the Department of Defense of a military occupational specialty or skill in a field of renewable energy or with respect to advanced manufacturing, machinist or welding, or engineering; (2) having completed a vocational degree in a field of renewable energy; or (3) having completed a LEED (Leadership in Energy & Environmental Design) certification with the United States Green Building Council. The Department of the Treasury shall compensate specified U.S. possessions for their losses resulting from this bill.