For more energy savings this winter consider thick panel window coverings or insulated drapes for the coldest rooms in your home. Designer Linens Outlet offers many options to choose from that can be used with an additional lining. Here are a couple of them:
For insulated drapes try the selections at the Bed Bath Store, Boscov's, and Amazon. To save money you can also just buy some inexpensive material and line your existing curtains for insulation. Just be sure to keep those curtains open on southern facing windows when the sun is shining to take advantage of the free heat.