Considering Solar Panels on Historical Homes

As solar systems cover more and more urban rooftops across the United States, the odds of historical homeowners taking the solar plunge grows. While the essentials of solar installation are still there, certain considerations need to be taken into account that are specific to historical and older homes. The most common misconception is that older homes cannot handle the weight of solar panels. This is a largely manageable problem, and just one of several considerations for historical homeowners looking to make solar a part of their history.

1. Codes and Ordinances. Any city that recognizes its historical buildings will have rules regarding their upkeep and renovation. Generally, you will need to maintain the historical look and feel of the home as well as possible. Many cities now have rules specific to solar installations, so check these out first and foremost. Finding a solar contractor with prior knowledge of historical homes in the area could really expedite the planning process.
2. The Weight Factor. As with any installation, weight is an important factor. Old roof framing, which likely predates any contemporary building codes, can cause problems for installers who must meet safety standards. Therefore, the added cost of remodeling to support and distribute the solar array must be considered.
3. Energy Efficient Upgrades. Most states or municipalities require a certain level of efficiency from a home before solar system owners can qualify for rebates and incentives. In some cases, a home energy audit may even be necessary. Older homes are almost always lacking proper efficiency in some way. Insulation, of attic and walls, and updated appliances are two of the biggest and most common issues with historical homes – two you may have to address when designing and installing a solar system.
4. Shading. This doesn’t seem like an issue specific to older homes, but shading by trees might become a real problem. Many historical homes have trees on site that are as old or older than the home itself. This can mean huge oak or walnut trees (watch out for walnuts!) that could shade or even damage panels. New technologies promise to alleviate some of these shading problems. Just be aware that you may have to take out a good portion of your favorite old tree.

All of these are problems that in some form or another, can plague any homeowner during the design and implementation of their solar power system. They just tend to be more prevalent as the homes get older. These considerations are a few that I recognize as common obstacles. There may be several more that are specific to your home or that I have missed. I recommend a solar contractor with experience on historical and older homes.

Let us help you find one in your area.

Posted on November 3rd in Going Solar by Dan.