Crestline, California, United States, is a pretty good place to generate energy using solar panels all year round. The amount of energy you can get from your solar panels changes with the seasons. In the summer, you can expect around 8.37 units of energy per day for each unit of your solar panel's capacity. In autumn, this drops to around 5.54 units per day; in winter it's even lower at 3.97 units per day; and in spring it goes back up to about 7.72 units per day.
Because of these changes throughout the year, the best times to generate solar power at this location are during spring and summer when there is plenty of sunlight.
If you're installing fixed panel solar panels here (meaning they don't move or adjust their position), tilting them towards south at an angle of about 30 degrees will give you the most overall energy production throughout the year.
As for any factors that could affect your ability to produce solar power here - Crestline is located in a mountainous region which means that shading from mountains or trees could potentially block sunlight reaching your panels especially during winter when sun is low on horizon. Weather conditions like snowfall could also cover up your panels and reduce their efficiency.
To overcome these potential issues:
1) You can carefully choose where you install your panels so they aren't shaded by nearby obstacles like mountains or trees.
2) Regular cleaning and maintenance will keep them clear from snowfall or other debris.
3) Also consider installing a tracking system that allows your panels to follow sun’s movement across sky increasing exposure time.
4) If possible use anti-reflective coating on PV modules which increases light absorption even under cloudy conditions or low angles (like winters).
Remember though, while these preventative measures may improve performance somewhat, they'll also add extra costs so make sure any additional investment would be worthwhile based on how much extra energy you'd actually get.
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 Crestline
Seasonal solar PV output for Latitude: 34.2423, Longitude: -117.2748 (Crestline, 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 Crestline, United States
To maximize your solar PV system's energy output in Crestline, United States (Lat/Long 34.2423, -117.2748) 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 Crestline, 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 Crestline, 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 | 49° 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 Crestline, 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 Crestline, 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 Crestline, United States
Crestline is located in the San Bernardino Mountains of Southern California. The topography is characterized by steep mountainous terrain, heavily forested with pine and oak trees. The area experiences a Mediterranean climate with warm, dry summers and cool, wet winters.
Given this topography and vegetation, large-scale solar PV installations would be challenging within Crestline itself due to the mountainous terrain and tree coverage which could block sunlight. However, areas at lower elevations or in nearby valleys may be more suitable for such installations.
The surrounding desert areas like Mojave Desert or Antelope Valley might be more suited for large-scale solar PV installations due to their flat terrain and high annual sunshine hours. These regions have less vegetation cover which reduces shading issues on solar panels.
Moreover, urbanized areas like San Bernardino city or Riverside could also potentially host rooftop solar PV systems on commercial or residential buildings. It's worth noting that any proposed site would need to undergo a detailed feasibility study taking into account factors such as local climate conditions (including cloud cover), land use restrictions, proximity to transmission lines etc., before determining its suitability for a large-scale solar installation.
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: Wednesday 31st of January 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.
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.




