There are also State incentives and Federal Tax Credits available to help offset the retrofit. New Jersey has been offering $100-$200 for every fixture (400w-1000w) changed out or retrofitted; meaning, if you change 50 pole lights you will qualify for $5,000-$10,000 in State Incentives.
(Source:National Automobile Dealers Association)
For tax related info check out 179d.org
