Jourdanton, Texas, located in the Northern Sub Tropics at coordinates 28.918, -98.5464, offers reasonably good conditions for year-round solar energy generation, though with notable seasonal variations that potential solar installers should understand.

Seasonal Solar Performance

The location shows strong seasonal differences in solar energy production. Summer delivers the highest output at 7.09 kWh per day per kW of installed solar capacity, making it the peak generation season. Spring follows as the second-best period with 5.72 kWh per day per kW, while autumn produces 5.22 kWh per day per kW. Winter presents the most challenging period for solar generation, dropping to just 3.61 kWh per day per kW of installed capacity. This represents nearly a 50% reduction compared to summer output, which is typical for locations at this latitude but still allows for meaningful year-round energy production. For maximum efficiency with a fixed panel installation at this location, solar panels should be tilted at 26 degrees facing south. This angle optimizes total annual energy capture by accounting for the sun's changing position throughout the year.

Local Environmental Challenges

Several environmental and weather factors in the Jourdanton area can impact solar panel performance and require consideration during installation:

• Severe Weather: Texas is prone to hail storms, high winds, and occasional tornadoes that can damage solar installations
• Dust and Pollen: The semi-arid climate generates significant dust, while spring brings heavy pollen loads that reduce panel efficiency
• High Temperatures: Extreme summer heat can reduce panel efficiency and stress electrical components
• Humidity and Storms: High humidity and thunderstorms can affect electrical connections and create safety concerns

Protective Measures for Better Performance

To maximize solar energy production despite these challenges, several preventative measures should be implemented. Installing impact-resistant panels and using reinforced mounting systems helps protect against hail and wind damage. Regular cleaning schedules become essential, particularly during dusty periods and after pollen season. Proper ventilation around panels prevents overheating during Texas summers, while high-quality weatherproof electrical components resist humidity and moisture. Installing surge protection safeguards against lightning strikes, which are common during thunderstorm season. Choosing panels with good low-light performance helps maintain production during cloudy periods, while ensuring adequate spacing between panels allows for thermal expansion and easier maintenance access. Professional installation with proper grounding and electrical safety measures is particularly important given the region's severe weather potential.

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 Jourdanton

Seasonal solar PV output for Latitude: 28.918, Longitude: -98.5464 (Jourdanton, 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 26° South in Jourdanton, United States

To maximize your solar PV system's energy output in Jourdanton, United States (Lat/Long 28.918, -98.5464) throughout the year, you should tilt your panels at an angle of 26° 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 Jourdanton, 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 Jourdanton, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 26° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
13° South in Summer	34° South in Autumn	44° South in Winter	22° 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 Jourdanton, 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 Jourdanton, 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 Jourdanton, United States

Topographical Features Around Jourdanton

The landscape surrounding Jourdanton in south-central Texas presents a gently rolling terrain characteristic of the South Texas Plains region. This area sits within the transition zone between the Edwards Plateau to the north and the more level coastal plains extending toward the Gulf of Mexico. The elevation changes are generally modest, with gradual undulations creating a series of low hills and shallow valleys that rarely present steep gradients. The region features predominantly flat to gently sloping terrain, with elevations typically ranging from around 400 to 600 feet above sea level. The topography is punctuated by occasional limestone outcroppings and scattered oak mottes, which are small groves of trees that dot the landscape. Creek systems, including tributaries of the Atascosa River, have carved shallow valleys through the area, creating subtle drainage patterns that influence the local topography. The soil composition consists largely of clay and sandy loam formations, with some areas featuring caliche layers beneath the surface. These geological characteristics contribute to the relatively stable ground conditions found throughout much of the region. The landscape is interspersed with agricultural fields, ranch lands, and patches of native brush country vegetation typical of south Texas.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations around Jourdanton would be the broad, relatively flat expanses found to the southeast and southwest of the town. These areas offer the most consistent level terrain with minimal elevation changes, reducing the complexity and cost of site preparation and panel installation. The southeastern sections, in particular, present large contiguous areas of open land with gentle slopes that would accommodate extensive solar arrays without significant grading requirements. Areas with southern-facing slopes throughout the region would provide additional advantages for solar panel positioning, though the generally modest topographical relief means that most locations offer reasonable solar exposure potential. The key consideration becomes identifying parcels with sufficient size and appropriate land use designations rather than overcoming significant topographical challenges. The western approaches to Jourdanton also present favorable conditions, where the terrain opens into broader expanses of rangeland with minimal tree cover. These locations benefit from reduced shading concerns and offer the space necessary for utility-scale solar developments. The existing road infrastructure in these areas provides reasonable access for construction and maintenance activities. Agricultural areas with relatively level fields could serve as excellent candidates for solar development, particularly those with established access roads and existing electrical infrastructure nearby. The combination of suitable topography, land availability, and proximity to transmission lines makes these agricultural zones particularly attractive 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!

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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.