List of questions
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This section covers the most common questions people have about residential and commercial solar power systems.
- Does solar energy work in areas of the US that have lots of cloudy days?
- Will my solar panel still work when it snow?
- During a power outage will my solar electric system still produce power?
- How many solar electric panels are needed to cover all the power needs for my house or apartment?
- We are moving is a couple of years, does it make sense to install a solar system?
- How long do the solar modules last?
- Will my solar system still work when it is cloudy or foggy?
- Can solar panels fit on a flat roof?
- Are solar panels too heavy for my roof?
- Are solar panels durable enough to withstand hailstorms?
- How long does it take to install a solar electric system?
- What, if any, disadvantages are they for using solar energy?
- Do I need to put in a new roof before installing the solar panel?
- Do the panels need to be cleaned periodically?
- Why are photovoltaics (PV) so highly recommended?
Frequently asked questions
How long does it take to install a solar electric system?
Depending on the size and complexity of your solar system, it normally take between two to five days to install. However you can expect delays waiting for the local energy company to install the electrical meter (in a grid-tied system) or waiting for local electrical inspectors.
What, if any, disadvantages are they for using solar energy?
There is a higher "first time" cost for installation and purchase of a solar system. However, the considerable fuel savings over the lifespan of the system in enough to recover the initial costs. Another drawback is that solar energy requires some direct access to sunlight. Solar electric system may not be an option for you if you live in heavily shaded area or an area where you cannot remove trees or other obstruction.
Do I need to put in a new roof before installing the solar panel?
Given the durability and 25 year lifespan of solar panels you should definitely consider the age of your roof before installing them. If your roof is more than 20 years old and in bad shape you should consider replacing it. On the other hand if your roof is in good shape adding the solar panels will actually make your roof last longer blocking ultraviolet rays and help keep snow and ice off both of which can damage your roof .
Do the panels need to be cleaned periodically?
In the northeast it rains sufficiently to clean the panels. If necessary the panels can be hosed down for cleaning. Do not spray water on the panels when they are very hot.
Why are photovoltaics (PV) so highly recommended?
There are many advantages associated with a PV system that make them the best option. Consider the following issues:
1. Easy Access - A well-designed PV system operates without supervision and requires the least amount of maintenance. This can lead to significant savings in labor costs and travel expenses.
2. Modularity- The PV system can be expanded to meet your future power demands relatively easily and inexpensively.
3. Fuel supply- Supplying and storing conventional energy sources can be more expensive than the fuel itself. Solar energy is delivered free of charge.
4. Environment- There is no pollutants or waste products generated from operating PV systems.
5. Maintenance- Experiences shows that PV systems require less maintenance than other alternatives
6. Durability - Most PV modules last more than 25 years of operation.
7. Cost - Most solar panels have a payback period that is far less than the 25 year warranty. Moreover, the rising costs of gas and oil will shorten the payback period going forward.
