Grants/Savings on window/insulation rehabs

[Cary P.]

Hi Folks,

I'm sure the question has been asked numerous times, so I'd like to learn how to search the forum instead of posting again..

Where do I look for grants or other ways to save on replacing a system of windows or insulation on multi-family units?  Having to replace 100+ windows is a daunting prospect even working with vendor discounts for volume.