Ramona, California presents an excellent location for year-round solar energy generation, positioned in the Northern Sub Tropics at coordinates 33.0313°N, -116.8579°W. The solar production data reveals consistently strong performance across all seasons, making it a highly favorable site for solar photovoltaic installations.
Seasonal Solar Performance
The location demonstrates robust solar energy potential throughout the year. Summer delivers peak performance at 8.22 kWh per day per installed kilowatt, representing the optimal season for solar generation. Spring follows closely with 7.77 kWh per day per kW, making it nearly as productive as summer months. Autumn production drops to 5.52 kWh per day per kW, which still represents solid energy generation. Even during winter, the weakest season, the location produces 3.95 kWh per day per kW - a respectable output that demonstrates the year-round viability of solar installations in this area. The ideal seasons for solar generation at this location are clearly summer and spring, when production exceeds 7.7 kWh per day per kW. However, the relatively modest seasonal variation indicates that solar panels will provide consistent energy production throughout the entire year.Optimal Panel Configuration
For maximum year-round energy production, solar panels should be installed at a fixed tilt angle of 29 degrees facing south. This angle has been calculated to optimize total annual solar output by accounting for the sun's varying elevation throughout the year and weighting these angles based on actual solar irradiance data.Environmental and Weather Considerations
Several local factors in Ramona could potentially impact solar energy production, though most can be effectively managed with proper installation practices. **Wildfire Risk and Smoke** Ramona sits in an area prone to wildfires, particularly during dry, hot periods. Smoke from fires can significantly reduce solar panel efficiency by blocking sunlight. While this risk cannot be eliminated, installing panels with easy access for cleaning and having a maintenance plan ready for post-fire cleanup can help restore production quickly. **Dust and Debris** The semi-arid climate means dust accumulation on panels can reduce efficiency over time. Regular cleaning schedules, especially before peak production seasons, will help maintain optimal performance. Installing panels at the recommended 29-degree tilt helps with natural rain washing, but manual cleaning may still be necessary during dry periods. **Wind Considerations** The area can experience strong winds, particularly during Santa Ana wind events. Proper mounting systems rated for local wind loads and professional installation are essential to prevent damage and maintain panel positioning. **Preventative Installation Measures** To maximize energy production despite these challenges, several installation strategies prove beneficial:- Use high-quality mounting systems designed for high wind loads
- Install panels with adequate spacing for air circulation and cleaning access
- Consider anti-soiling coatings to reduce dust accumulation
- Plan for regular maintenance and cleaning schedules
- Ensure proper electrical grounding for fire safety
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 Ramona
Seasonal solar PV output for Latitude: 33.0313, Longitude: -116.8579 (Ramona, 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 29° South in Ramona, United States
To maximize your solar PV system's energy output in Ramona, United States (Lat/Long 33.0313, -116.8579) throughout the year, you should tilt your panels at an angle of 29° 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 Ramona, 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 Ramona, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 29° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 17° South in Summer | 38° South in Autumn | 48° South in Winter | 26° 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 Ramona, 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 Ramona, 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 Ramona, United States
Topographical Features of Ramona
Ramona sits in the foothills of San Diego County's backcountry, positioned at an elevation of approximately 1,400 feet above sea level. The town is nestled within a broad valley system surrounded by rolling hills and mountain ranges that create a distinctive bowl-like landscape. To the north and east, the terrain rises gradually toward the Peninsular Ranges, while the western approaches feature gentler slopes that eventually descend toward the coastal plain. The immediate area around Ramona is characterized by undulating terrain with moderate slopes, interspersed with flat to gently rolling valleys that have historically supported agriculture and ranching. The landscape consists primarily of chaparral-covered hills dotted with oak woodlands, creating a Mediterranean-style environment typical of inland Southern California. Several seasonal creeks and drainage channels flow through the valley system, though these waterways are generally dry for much of the year. The geological foundation of the region consists mainly of granitic bedrock overlain by alluvial deposits in the valley floors. This creates relatively stable ground conditions with good drainage characteristics. The surrounding hills range from gentle rises of 100-200 feet above the valley floor to more substantial elevations reaching 2,000-3,000 feet in the nearby mountain areas.Solar Development Suitability
The valley floors and gentle southern-facing slopes around Ramona present excellent opportunities for large-scale solar photovoltaic installations. The most promising areas include the broad, relatively flat agricultural lands that extend north and south of the town center. These locations offer the dual advantages of minimal grading requirements and existing road access infrastructure. The gently sloping terrain to the south and southwest of Ramona would be particularly well-suited for solar development, as these areas naturally face toward the sun's path and require minimal site preparation. The gradual inclines, typically ranging from 2-8 degrees, are ideal for optimizing panel orientation while maintaining efficient construction and maintenance access. Several large, undeveloped parcels exist in the broader valley system, particularly in areas that were previously used for agriculture or grazing. These sites benefit from relatively level topography, established utility corridors, and proximity to existing electrical infrastructure. The stable geological conditions and good drainage characteristics of the alluvial valley floors would support the foundation requirements for extensive solar arrays. Areas with steeper terrain, particularly the chaparral-covered hillsides and areas with slopes exceeding 15 degrees, would be less suitable for large-scale development due to increased construction costs and potential environmental sensitivities. However, the abundance of gently rolling terrain in the region provides ample opportunities for solar development without requiring development of these more challenging locations.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: Saturday 26th of July 2025
Last Updated: Thursday 7th of August 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.
Helping you assess viability of solar PV for your site
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.




