NEW YORK--(BUSINESS WIRE)--Citi and Renew Financial today announced that they recently closed the first ever asset-backed security (ABS) transaction comprised of unsecured consumer energy efficiency loans. The landmark transaction – in which Renew Financial and Citi issued $12.58 million in securities – creates a new asset class in the form of ABS backed by pools of residential energy efficiency loans. Citi and Renew Financial expect to execute additional transactions over the next several year