Based on 2025 data from the Solar Energy Industries Association (SEIA) and Department of Energy benchmarks, you're looking at $2.53 to $3.15 per watt for residential solar installations before any tax credits kick in. What does this mean for your home?
[pdf] The conversion rate of solar photovoltaic panels varies, but on average, it lies between 15% and 22%, efficiency is influenced by factors like temperature, sunlight quality, and installation angle, newer technologies are continually being developed to improve this efficiency.
[pdf] Monocrystalline silicon photovoltaic panels are highly efficient due to their complete crystal structure, with a photoelectric conversion rate of 22% to 27%. They are highly pure and have fast electron mobility, which reduces energy loss.
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