Solar PV Analysis of Merced, United States
Merced, California, located in the Northern Temperate Zone, offers a generally favorable environment for solar PV energy generation throughout the year. With coordinates of 37.2972° N, 120.4639° W, this location experiences significant seasonal variations in solar energy production.
Seasonal Solar Performance
Summer stands out as the peak season for solar energy generation in Merced, with an impressive output of 8.63 kWh per day for each kW of installed solar capacity. Spring follows closely behind, producing 7.57 kWh/day. These seasons provide ideal conditions for maximizing solar energy production.
Autumn sees a noticeable decrease in energy output, dropping to 4.77 kWh/day. Winter experiences the lowest production at 3.00 kWh/day, which is typical for locations in the Northern Hemisphere due to shorter days and lower sun angles.
Optimal Panel Installation
For fixed panel installations in Merced, the ideal tilt angle to maximize year-round solar production is 31 degrees facing South. This angle optimizes the panels' exposure to sunlight throughout the year, accounting for seasonal changes in the sun's position.
Environmental and Weather Considerations
While Merced generally provides good conditions for solar energy production, there are some factors to consider:
- Fog: The Central Valley, including Merced, can experience dense fog, particularly in winter months. This may temporarily reduce solar panel efficiency.
- Dust and agricultural particulates: Merced's location in an agricultural area can lead to dust accumulation on panels, potentially decreasing their effectiveness.
Preventative Measures
To mitigate these factors and ensure optimal energy production, consider implementing the following measures:
- Regular cleaning: Establish a routine cleaning schedule for solar panels to remove dust and particulate matter.
- Anti-soiling coatings: Apply specialized coatings to panels to reduce dust adherence and improve self-cleaning properties.
- Smart inverters: Use inverters capable of adapting to varying light conditions, helping to optimize performance during foggy periods.
Overall, Merced's climate is well-suited for solar energy production, with ample sunshine throughout most of the year. By addressing the few environmental challenges present, solar installations in this location can achieve high efficiency and consistent energy output.
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 Merced
Seasonal solar PV output for Latitude: 37.2972, Longitude: -120.4639 (Merced, 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 31° South in Merced, United States
To maximize your solar PV system's energy output in Merced, United States (Lat/Long 37.2972, -120.4639) throughout the year, you should tilt your panels at an angle of 31° 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 Merced, 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 Merced, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 31° 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 | 41° South in Autumn | 51° South in Winter | 29° 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 Merced, 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 Merced, 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 Merced, United States
The topography around Merced, California, is characterized by a relatively flat landscape typical of the San Joaquin Valley. Merced is situated in the heart of this vast agricultural region, which is known for its expansive, level terrain. The city and its surrounding areas have an average elevation of about 170 feet (52 meters) above sea level, with minimal variation in elevation across the immediate vicinity.
To the east of Merced, the terrain gradually begins to rise as it approaches the foothills of the Sierra Nevada mountain range. This transition zone, known as the Sierra Nevada foothills, features gently rolling hills and slightly more varied topography compared to the flat valley floor. However, these hills are still relatively modest in height and don't dramatically alter the overall landscape until much further east.
To the west of Merced, the land remains predominantly flat as it extends towards the Coast Ranges. This area is part of the vast Central Valley, which is renowned for its fertile soil and agricultural productivity. The flatness of this region continues for many miles before encountering the more rugged terrain of the Coast Ranges in the far distance.
Regarding areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, the flat, open spaces surrounding Merced offer excellent potential. The following characteristics make the region favorable for solar energy development:
- Abundant flat land: The extensive agricultural areas and undeveloped spaces provide ample room for large solar arrays without the need for significant land preparation.
- High sun exposure: The Central Valley experiences a high number of sunny days annually, making it ideal for solar energy production.
- Minimal shading: The lack of tall natural features or urban development reduces the risk of shading, which can impact solar panel efficiency.
- Proximity to infrastructure: The area's developed agricultural sector means that there is often existing infrastructure (roads, power lines) that can support solar farm development.
Specific areas that might be particularly well-suited for large-scale solar PV installations include:
- The agricultural lands to the south and southeast of Merced
- Open spaces between Merced and the neighboring towns of Atwater and Livingston
- Undeveloped areas to the west of the city, extending towards Los Banos
It's important to note that while these areas have favorable topography for solar development, any large-scale project would need to consider factors such as land use regulations, environmental impact, and grid connection capabilities. Additionally, the conversion of agricultural land to solar farms is a topic of ongoing debate in the region, balancing the need for renewable energy with the preservation of valuable farmland.
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: Sunday 8th of September 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.
