Rowland Heights, California, situated in the Northern Sub Tropics at coordinates 33.9816, -117.9092, offers a promising location for solar energy generation throughout the year. The area experiences significant variations in solar output across different seasons, which can impact the overall efficiency of solar PV systems.

Seasonal Solar Performance

Summer stands out as the most productive season for solar energy in Rowland Heights, with an impressive daily output of 7.87 kWh per kW of installed solar capacity. Spring follows closely behind, generating 7.05 kWh/day. These seasons provide excellent opportunities for maximizing solar energy production. Autumn sees a moderate decrease in solar output, with 5.20 kWh/day. Winter experiences the lowest production at 3.81 kWh/day, which is still a respectable amount considering the shorter days and lower sun angle during this season.

Optimal Panel Installation

For those considering a fixed panel installation in Rowland Heights, the ideal tilt angle to maximize year-round solar production is 30 degrees facing South. This angle has been calculated to optimize energy capture across all seasons, taking into account the location's latitude and the Earth's elliptical orbit.

Environmental Considerations

While Rowland Heights generally offers favorable conditions for solar energy production, there are a few environmental factors to consider: 1. Smog and air pollution: Being in the greater Los Angeles area, Rowland Heights can experience periods of poor air quality, which may slightly reduce solar panel efficiency. 2. Occasional Santa Ana winds: These strong, dry winds can carry dust and debris, potentially affecting panel performance. To mitigate these issues, regular cleaning and maintenance of solar panels is recommended. Additionally, installing panels at a slight angle can help prevent dust accumulation and facilitate natural cleaning during rainfall. In conclusion, Rowland Heights presents an ideal location for solar PV installations, with strong potential for energy generation throughout the year, particularly during the spring and summer months. By optimizing panel placement and addressing local environmental factors, residents and businesses can maximize their solar energy production and contribute to a more sustainable future.

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 Rowland Heights

Seasonal solar PV output for Latitude: 33.9816, Longitude: -117.9092 (Rowland Heights, 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 Rowland Heights, United States

To maximize your solar PV system's energy output in Rowland Heights, United States (Lat/Long 33.9816, -117.9092) 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 Rowland Heights, 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 Rowland Heights, 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 Rowland Heights, 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 Rowland Heights, United States.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Rowland Heights, United States

Rowland Heights, located in Los Angeles County, California, is situated in an area with diverse topography. The landscape surrounding this community is characterized by a mix of rolling hills, valleys, and flatlands. To the north and east of Rowland Heights, the terrain becomes more elevated, with the San Jose Hills and Puente Hills providing a scenic backdrop. These hills are part of the larger Transverse Ranges that run east-west across Southern California. The area immediately surrounding Rowland Heights features gentle slopes and undulating terrain, gradually transitioning to flatter areas towards the south and west. This varied topography is a result of geological processes and the region's proximity to several fault lines, including the Whittier Fault. To the south and southwest of Rowland Heights, the land becomes increasingly level as it approaches the coastal plains of Orange County. This flatter terrain extends towards the Pacific Ocean, about 25 miles away.

Potential for Large-Scale Solar PV

When considering areas nearby that would be most suited for large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would have ample flat or gently sloping land, minimal shading from surrounding terrain or vegetation, and good access to existing power infrastructure. Given these criteria, the areas to the south and southwest of Rowland Heights show the most promise for large-scale solar PV projects. The flatter terrain in this direction provides larger, contiguous spaces that could accommodate extensive solar arrays. These areas also benefit from the region's abundant sunshine and relatively stable climate, which are crucial for optimal solar energy production. However, it's important to note that much of the land surrounding Rowland Heights is already developed or designated for other uses. Any large-scale solar projects would need to be carefully planned and would likely require repurposing existing land or identifying suitable brownfield sites. The gently sloping areas on the outskirts of the hills to the north and east might also offer some potential for solar installations, although these would likely be on a smaller scale due to the more varied terrain. These locations could be suitable for community solar projects or distributed energy systems that serve local needs. Ultimately, the feasibility of large-scale solar PV in the vicinity of Rowland Heights would depend on a combination of factors, including land availability, local zoning regulations, and environmental considerations. Careful site assessment and community engagement would be necessary to identify the most appropriate locations for such developments.

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!

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.