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Flag of United StatesSolar PV Analysis of Lathrop, United States

Graph of hourly avg kWh electricity output per kW of Solar PV installed in Lathrop, United States (by season)

Lathrop, California, located in the Northern Temperate Zone, offers a promising location for solar energy generation through photovoltaic (PV) systems. With its geographical coordinates at 37.8203°N latitude and 121.2804°W longitude, this area experiences varying levels of solar potential throughout the year.

The solar energy production in Lathrop follows a predictable seasonal pattern. Summer stands out as the most productive season, with an impressive daily output of 8.64 kWh per kW of installed solar capacity. Spring follows closely behind, generating 7.50 kWh per day. These two seasons present ideal conditions for maximizing solar energy production.

As autumn approaches, the energy output decreases to 4.84 kWh per day. Winter experiences the lowest production, with 2.97 kWh per day. Despite this seasonal variation, Lathrop's location still allows for year-round solar energy generation, albeit at varying efficiencies.

Optimal Panel Positioning

To maximize year-round solar production in Lathrop, fixed solar panels should be installed at a tilt angle of 32 degrees facing south. This optimal angle ensures the panels capture the most sunlight throughout the year, accounting for the Earth's elliptical orbit and the location's specific latitude.

Environmental Considerations

While Lathrop's climate is generally favorable for solar production, there are a few environmental factors to consider:

  1. Fog: The Central Valley, where Lathrop is located, can experience fog, particularly in winter months. This may temporarily reduce solar output.
  2. Air quality: The region can sometimes face air quality issues due to wildfires or agricultural activities, which might slightly impact solar efficiency.

To mitigate these factors, consider installing panels at a slightly steeper angle to allow fog or dust to run off more easily. Regular cleaning and maintenance of the panels can also help maintain optimal performance. Additionally, using high-quality, anti-reflective coatings on the panels can improve their performance in less-than-ideal conditions.

Overall, Lathrop's location provides a favorable environment for solar PV systems, with ample opportunity for energy generation throughout the year, especially during the spring and summer months.

Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° 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 Lathrop

Seasonal solar PV output for Latitude: 37.8203, Longitude: -121.2804 (Lathrop, 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:

Summer
Average 8.64kWh/day in Summer.
Autumn
Average 4.84kWh/day in Autumn.
Winter
Average 2.97kWh/day in Winter.
Spring
Average 7.50kWh/day in Spring.

 

Ideally tilt fixed solar panels 32° South in Lathrop, United States

To maximize your solar PV system's energy output in Lathrop, United States (Lat/Long 37.8203, -121.2804) throughout the year, you should tilt your panels at an angle of 32° 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.

The sun
At Latitude: 37.8203, Longitude: -121.2804, the ideal angle to tilt panels is 32° South

Seasonally adjusted solar panel tilt angles for Lathrop, 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 Lathrop, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 32° South tilt angle throughout the year.

Overall Best Summer Angle Overall Best Autumn Angle Overall Best Winter Angle Overall Best Spring Angle
21° South in Summer 42° South in Autumn 52° South in Winter 30° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Lathrop, United States as follows: In Summer, set the angle of your panels to 21° facing South. In Autumn, tilt panels to 42° facing South for maximum generation. During Winter, adjust your solar panels to a 52° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 30° angle facing South to capture the most solar energy in Lathrop, United States.

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 Lathrop, 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 Lathrop, 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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Lathrop, United States

The topography around Lathrop, California, is characterized by its location in the San Joaquin Valley, a vast and predominantly flat region in central California. This area is part of the larger Central Valley, known for its agricultural productivity and expansive, open landscapes. The terrain surrounding Lathrop is primarily level, with very gentle slopes and minimal elevation changes across the immediate vicinity. To the east of Lathrop, the land gradually rises towards the foothills of the Sierra Nevada mountain range, but this transition occurs over a considerable distance. The western direction leads towards the California Coast Ranges, though these mountains are also quite far from Lathrop itself. The city is situated near the confluence of the San Joaquin River and its tributaries, which has influenced the local topography, creating some subtle variations in the otherwise flat landscape.

Potential for Large-Scale Solar PV

The areas surrounding Lathrop offer excellent potential for large-scale solar photovoltaic (PV) installations due to several favorable factors. The flat, open terrain provides ample space for extensive solar arrays without the need for significant land preparation or grading. This topography also minimizes shading issues, allowing for optimal solar exposure throughout the day. The regions to the east and southeast of Lathrop are particularly well-suited for solar PV development. These areas benefit from high levels of solar irradiance, thanks to the clear skies and abundant sunshine typical of the San Joaquin Valley. The gradually rising terrain towards the Sierra foothills in this direction can provide slight elevation gains, potentially increasing solar exposure and reducing the impact of morning and evening shadows. Additionally, the agricultural lands surrounding Lathrop could be considered for dual-use solar installations, where solar panels are integrated with crop production or grazing lands. This approach could maximize land use efficiency while maintaining agricultural productivity. It's worth noting that while the immediate vicinity of Lathrop offers good potential for solar PV, developers would need to consider factors such as proximity to existing electrical infrastructure, local zoning regulations, and environmental impact assessments when selecting specific sites for large-scale solar projects.

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

Article: Solar PV Analysis of Lathrop, United States
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 20th of March 2025
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.

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