Complete Solar Analysis: Portland, United States
Solar Overview
With 2,284 sun hours annually, Portland offers average solar conditions, especially during July. Positioned at 45.52° latitude, solar panels experience meaningful seasonal variation, requiring consideration in tilt angle optimization. While not exceptional, Portland's solar conditions support viable solar installations with careful system design and realistic expectations.
Geographic Impact
Located at 45.5152° latitude and -122.6784° longitude, Portland's geographical position significantly impacts its solar potential. The latitude creates moderate seasonal challenges that are well-addressed by standard fixed-tilt installations oriented at the latitude angle.
Rating Methodology
With 2,284 sun hours annually and 13.6°C average temperature, Portland achieves a "Average" solar potential rating. The cool environment benefits panel efficiency, with lower temperatures offsetting reduced irradiation during shorter winter days. These conditions make solar economically viable, especially when electricity costs are high or incentives reduce initial investment.
Understanding the Data
The following chart shows how solar energy varies month-to-month in Portland. Solar production shows notable seasonal variation, with summer months providing 42% and winter delivering 16% of annual energy. Understanding this seasonal distribution is crucial for optimal system sizing and accurate financial projections.
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