Solar PV Analysis of Rialto, United States
Rialto, California is a decent location for generating solar energy all year round. However, the amount of electricity you can produce varies with each season. During the summer and spring, you can expect to generate more power - about 8.37 kilowatt-hours (kWh) per day in the summer and 7.72 kWh/day in the spring from each kilowatt (kW) of installed solar panels. In comparison, autumn and winter will generate less power - about 5.54 kWh/day in autumn and only 3.97 kWh/day in winter.
To maximize your energy production throughout the year at this location, it's best to tilt your solar panels at an angle of 30 degrees facing South if they are fixed installations.
However, there could be some local factors that may affect your solar production in Rialto such as weather conditions or environmental issues like dust or pollution which can block sunlight reaching your panels. To help ensure greater energy production despite these challenges:
1) Regularly clean your panels to remove any dirt or dust that may accumulate over time.
2) Install a tracking system so that your panels follow the sun’s path across the sky for maximum exposure if possible.
3) Consider installing additional equipment such as battery storage systems to store excess power during peak times for use when generation is lower.
In conclusion, while Rialto isn't necessarily perfect due to its variability across seasons and potential local impediments like dust or pollution; with careful planning and maintenance, it still has good potential for harnessing solar energy effectively throughout most parts of the year especially during spring and summer months when output is highest.
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 Rialto
Seasonal solar PV output for Latitude: 34.1147, Longitude: -117.3845 (Rialto, 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 Rialto, United States
To maximize your solar PV system's energy output in Rialto, United States (Lat/Long 34.1147, -117.3845) 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 Rialto, 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 Rialto, 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 Rialto, 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 Rialto, 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 Rialto, United States
Rialto, located in San Bernardino County, California, is situated within the San Bernardino Valley. The topography around Rivalto is largely flat to gently sloping terrain with some surrounding hills and mountains due to its proximity to the San Gabriel Mountains and the San Bernardino Mountains.
The area has a Mediterranean climate with plenty of sunshine throughout the year which makes it suitable for solar PV installations. However, specific locations for large-scale solar PV would depend on several factors including land availability and usage, local regulations, environmental considerations etc.
Given these constraints:
1. Unused or underutilized industrial lands in Rialto could be suitable for large scale Solar PV installations.
2. Large commercial rooftops or parking lots can also be used for installing solar panels.
3. Open desert areas towards the east of Rialto (towards Mojave Desert) could potentially accommodate large-scale solar farms provided they meet environmental and other regulatory requirements.
Please note that any potential site would need a detailed assessment considering various technical (like irradiance levels), economic (like cost of land), social (like local acceptance), regulatory and environmental aspects before deciding on its suitability for large scale Solar PV 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!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 4th of May 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.
