Look into photo voltaic (sp?) shingles. Solar shingles. They appear to be regular shingles, and don't have the appearance of the panels. I haven't done serious research on them because I don't have the funds to go solar, but I've heard of them and like the look of them. I'll bet they are easier to maintain too.
We have a 2000 square foot, 106-year-old, currently all electric, two story house with 40 (yes 40!) windows. All but 2 windows are original to the home, with the original glass and sashes. Until we installed spray foam in the attic last year, we had little insulation.
Some of our neighbors have high bills. I don't know what the difference is. Maybe it's because we have the original plaster walls and, although not fashionable or historic, our house still has the asbestos shingles applied at one point. Both of which have some insulating properties.
Our electric bills, without water/sewer, average about $150 maybe. In maybe two very hot, and two very cold months, they are more...maybe $250 to $300.
Because we have animals, the HVAC runs all day. We don't turn it off when we go to work. To conserve and keep our electric bills down, we are careful with power. We use CFL's in our light fixtures. We turn off lights when we leave the room. We set the thermostat at reasonable temps. 65 in winter, and we wear sweaters. We don't try to dress in t-shirts in December. It's generally set at 80 in summer, and it's comfortable in here. Not super cool, but comfortable. We dont' let ourselves perspire to save money.