Indio, California, located in the Northern Sub Tropics, is generally an excellent location for generating energy via solar PV throughout the year. The city experiences high levels of solar irradiance, making it an ideal spot for harnessing solar power.
Seasonal Solar Production
Solar energy production in Indio varies across the seasons, with summer being the most productive period. During summer months, solar panels can generate an impressive 8.21 kWh per day for each kW of installed capacity. Spring follows closely behind with 7.78 kWh/day, making it the second-best season for solar production.
Autumn sees a moderate decrease in energy output, with panels producing 5.56 kWh/day. Winter experiences the lowest production at 3.98 kWh/day, but it's still a respectable amount compared to many other locations in the United States.
Optimal Panel Tilt
For fixed panel installations in Indio, the ideal angle to maximize year-round solar production is 29 degrees tilted towards the South. This angle takes into account the city's latitude and the sun's position throughout the year, ensuring optimal energy capture across all seasons.
Environmental Factors
While Indio is generally favorable for solar production, there are a few environmental factors to consider:
- Dust and sand: The desert environment can lead to dust accumulation on panels, potentially reducing efficiency.
- High temperatures: Extreme heat during summer months may slightly decrease panel efficiency.
To mitigate these issues, regular cleaning of panels is recommended to remove dust buildup. Additionally, installing panels with a slight tilt can help with natural cleaning during occasional rainfalls. For temperature concerns, choosing high-quality panels designed to perform well in hot climates and ensuring proper ventilation during installation can help maintain efficiency.
Overall, Indio's climate and abundant sunshine make it an excellent location for solar energy production, with only minor challenges that can be easily addressed through proper installation and maintenance practices.
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 Indio
Seasonal solar PV output for Latitude: 33.754, Longitude: -116.2664 (Indio, 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 Indio, United States
To maximize your solar PV system's energy output in Indio, United States (Lat/Long 33.754, -116.2664) 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 Indio, 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 Indio, 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 |
|---|---|---|---|
| 18° South in Summer | 39° 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 Indio, 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 Indio, 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 Indio, United States
Indio, located in the Coachella Valley of Southern California, is surrounded by a diverse and striking topography. The city itself sits on a relatively flat desert plain, but the landscape quickly transitions to more varied terrain in all directions. To the west and southwest of Indio, the Santa Rosa Mountains rise dramatically from the desert floor. These rugged peaks, part of the Peninsular Ranges, create a stark contrast to the valley below. Their steep slopes and rocky outcroppings dominate the western horizon, providing a picturesque backdrop to the city.
Desert Landscape
To the north and east of Indio, the terrain is characterized by typical Colorado Desert features. This includes expansive stretches of flat or gently rolling desert, punctuated by occasional rocky outcrops and dry washes. The Indio Hills, a low range of weathered mountains, lie to the north, separating the Coachella Valley from the higher desert beyond. South and southeast of Indio, the landscape gradually slopes down towards the Salton Sea, a large saline lake that sits below sea level. This area is marked by agricultural fields that benefit from irrigation, creating a patchwork of green amidst the desert surroundings.Solar PV Potential
The areas surrounding Indio offer excellent potential for large-scale solar PV installations due to several favorable factors. The desert climate provides abundant sunshine throughout the year, with minimal cloud cover and rainfall. The flat or gently sloping terrain in many areas makes construction and maintenance of solar farms relatively straightforward. Particularly well-suited areas for solar PV development include: 1. The desert plains to the east and northeast of Indio, where vast expanses of undeveloped land receive intense sunlight. 2. Areas south of the city, towards the Salton Sea, where agricultural land might be repurposed for solar energy production. 3. The gentler slopes of the Indio Hills, which could potentially accommodate terraced solar installations. These locations offer the advantage of being close to existing infrastructure and power grids, while still having sufficient open space for large-scale projects. However, any solar development would need to carefully consider environmental impacts, particularly on desert ecosystems and wildlife habitats. In conclusion, the topography around Indio presents a mix of flat desert plains, dramatic mountain ranges, and gently rolling hills. This diverse landscape, combined with the region's abundant sunshine, makes the area surrounding Indio highly suitable for solar PV development, with ample opportunities for large-scale installations in the desert areas to the east and south of the city.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: Friday 15th of November 2024
Last Updated: Monday 21st of July 2025
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.




