Fullerton, California, located in the Northern Sub-Tropics, offers a favorable environment for solar energy generation throughout the year. With its geographical position at 33.884° N latitude and -117.8941° W longitude, this location benefits from abundant sunshine and relatively stable weather patterns.
Seasonal Solar Performance
Solar energy production in Fullerton varies across seasons, with summer being the most productive period. During summer months, solar panels can generate an impressive 7.85 kWh per day for each kilowatt of installed capacity. Spring follows closely, with a daily output of 7.07 kWh/kW. Autumn sees a moderate decrease in production, yielding 5.26 kWh/day per kW. Winter, while less productive, still manages a respectable 3.88 kWh/day per kW.
Optimal Installation Angle
For fixed panel installations in Fullerton, the ideal tilt angle to maximize year-round solar production is 30 degrees facing south. This angle optimizes the panels' exposure to sunlight throughout the year, accounting for seasonal variations in the sun's position.
Peak Generation Periods
The most ideal times for solar energy generation in Fullerton are from late spring through early fall. During these months, longer daylight hours and the sun's higher position in the sky contribute to increased solar panel efficiency. However, the region's generally sunny climate allows for significant energy production even during the less optimal winter months.
Environmental Considerations
While Fullerton's climate is generally conducive to solar energy production, there are a few environmental factors to consider:
- Occasional Santa Ana winds can bring dust and debris, potentially reducing panel efficiency.
- Infrequent periods of coastal fog or marine layer can temporarily decrease solar output, particularly in early mornings.
To mitigate these issues, regular panel cleaning and maintenance are recommended. Additionally, installing panels at the optimal angle helps maximize exposure during clear periods and can help shed dust more effectively.
Overall, Fullerton's location proves to be highly suitable for solar PV installations, with its year-round sunny climate and minimal environmental obstacles to energy production.
Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 4253 locations across the United States. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in the United States by location
Solar output per kW of installed solar PV by season in Fullerton
Seasonal solar PV output for Latitude: 33.884, Longitude: -117.8941 (Fullerton, United States), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:
 
Ideally tilt fixed solar panels 30° South in Fullerton, United States
To maximize your solar PV system's energy output in Fullerton, United States (Lat/Long 33.884, -117.8941) throughout the year, you should tilt your panels at an angle of 30° South for fixed panel installations.
As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.
We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.
Seasonally adjusted solar panel tilt angles for Fullerton, United States
If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Fullerton, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 30° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 18° South in Summer | 39° South in Autumn | 48° South in Winter | 27° South in Spring |
Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.
This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.
Calculate solar panel row spacing in Fullerton, United States
We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Fullerton, United States.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - Minimum Spacing:
We add the shadow length to the horizontal space occupied by tilted panels.
This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.
Topography for solar PV around Fullerton, United States
Fullerton, located in Orange County, California, sits in a region characterized by a diverse topography. The city itself is primarily situated on gently rolling hills and flat plains, with elevations ranging from about 100 to 400 feet above sea level. To the north and east of Fullerton, the terrain becomes more rugged as it transitions into the foothills of the Santa Ana Mountains and Chino Hills. The area surrounding Fullerton features a mix of urban development and open spaces. To the west and south, the landscape is predominantly flat, consisting of the coastal plain that stretches towards the Pacific Ocean. This area is heavily urbanized, with a dense network of roads, residential neighborhoods, and commercial districts.
Nearby Areas Suitable for Large-Scale Solar PV
When considering locations for large-scale solar photovoltaic (PV) installations near Fullerton, several factors come into play, including available land, sun exposure, and proximity to existing infrastructure. The most suitable areas for such projects would likely be found to the east and northeast of Fullerton, where the terrain becomes more open and less developed. The Chino Hills area, located about 10-15 miles northeast of Fullerton, offers potential for solar development. This region features expansive, gently sloping hillsides with good sun exposure. The relatively undeveloped nature of this area provides ample space for large-scale solar installations. Another promising area lies to the east of Fullerton, in the vicinity of Corona and Riverside. This region, part of the Inland Empire, boasts vast stretches of flat or gently sloping land that receive abundant sunshine throughout the year. The presence of former agricultural lands and undeveloped parcels in this area could provide suitable sites for solar farms. It's important to note that while these areas may be topographically suitable for solar PV development, other factors such as land ownership, environmental considerations, and local zoning regulations would need to be carefully evaluated before any large-scale solar projects could be implemented. Additionally, the proximity to existing electrical infrastructure and transmission lines would play a crucial role in determining the feasibility and cost-effectiveness of potential solar installations in these areas.United States solar PV Stats as a country
United States ranks 2nd in the world for cumulative solar PV capacity, with 95,209 total MW's of solar PV installed. This means that 3.40% of United States's total energy as a country comes from solar PV (that's 26th in the world). Each year United States is generating 289 Watts from solar PV per capita (United States ranks 15th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in United States?
Yes, there are several incentives for businesses wanting to install solar energy in the United States. These include federal tax credits, state and local rebates, net metering policies, and renewable energy certificates (RECs). Additionally, many states have enacted legislation that requires utilities to purchase a certain amount of electricity from renewable sources such as solar.
Do you have more up to date information than this on incentives towards solar PV projects in United States? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 21st of November 2024
Last Updated: Monday 21st of July 2025
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Compare this location to others worldwide for solar PV potential
The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.
However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.
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Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide
Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.




