Granbury, Texas offers reasonably good conditions for year-round solar energy generation, though the location experiences significant seasonal variation in solar output that potential solar installers should understand.

Seasonal Solar Performance

The solar energy production at this Northern Sub-Tropical location varies considerably throughout the year. Summer provides the strongest performance at 7.00 kWh per day per kW of installed solar capacity, making it the ideal season for solar generation. Spring follows as the second-best period with 5.40 kWh per day per kW, while autumn drops to 4.98 kWh per day per kW. Winter presents the most challenging conditions, producing only 3.23 kWh per day per kW of installed capacity. For optimal year-round energy production from a fixed panel installation at this location, solar panels should be tilted at 29 degrees facing south. This angle maximizes total annual solar output by accounting for the sun's changing position throughout the seasons.

Local Factors Affecting Solar Production

Several environmental and weather factors in the Granbury area can impact solar energy production:

• Severe Weather Events: Texas is prone to hailstorms, tornadoes, and strong winds that can damage solar panels
• Dust and Pollen: The region experiences significant dust accumulation and high pollen counts, particularly in spring
• High Temperatures: Extreme summer heat can reduce panel efficiency despite abundant sunlight
• Humidity and Moisture: The subtropical climate brings high humidity that can affect electrical components

Preventative Measures for Better Performance

To maximize solar energy production despite these challenges, several protective measures should be considered during installation: Installing impact-resistant panels and secure mounting systems helps protect against hail and wind damage. Regular cleaning schedules become essential to remove dust and pollen buildup that can significantly reduce panel efficiency. Proper ventilation spacing between panels and the roof allows for better heat dissipation during hot summer months. Choosing high-quality inverters and electrical components rated for humid conditions ensures reliable operation. Additionally, installing monitoring systems allows for quick detection of performance issues, enabling prompt maintenance to maintain optimal energy production throughout the year.

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 Granbury

Seasonal solar PV output for Latitude: 32.4241, Longitude: -97.7743 (Granbury, 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 Granbury, United States

To maximize your solar PV system's energy output in Granbury, United States (Lat/Long 32.4241, -97.7743) 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 Granbury, 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 Granbury, 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
16° South in Summer	37° 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 Granbury, 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 Granbury, 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 Granbury, United States

Topography Around Granbury, Texas

The terrain surrounding Granbury, Texas presents a gently rolling landscape characteristic of the north-central Texas region. This area sits within the Cross Timbers ecological zone, where the Great Plains begin their transition from the eastern forests. The topography features modest hills and valleys with elevations typically ranging from 700 to 900 feet above sea level, creating a pleasantly undulating countryside rather than dramatic elevation changes. The landscape is punctuated by numerous creeks and waterways that have carved shallow valleys through the terrain over millennia. Lake Granbury, formed by the damming of the Brazos River, dominates the immediate area and creates additional topographical variation with its shoreline and associated wetlands. The surrounding hills are generally low and rounded, worn smooth by countless seasons of weathering. Rock outcroppings of limestone and sandstone appear throughout the region, remnants of ancient sea beds that once covered this part of Texas. These geological features create some localized variations in the otherwise gentle topography, though they rarely present significant obstacles to development or land use.

Optimal Areas for Large-Scale Solar Development

The most promising locations for substantial solar photovoltaic installations lie on the broader hilltops and elevated plateaus that extend southwest and northwest of Granbury. These areas offer relatively flat expanses with good southern exposure while maintaining sufficient elevation to avoid potential flooding concerns from the numerous waterways in the region. The gently sloping terrain on the higher elevations provides natural drainage while minimizing the need for extensive grading or earthwork that would increase installation costs. Areas with slopes between two and five degrees are particularly well-suited, as they allow for proper drainage while maintaining optimal panel positioning. Agricultural lands on the rolling prairie sections offer another excellent opportunity for solar development. These areas typically feature large, unobstructed parcels with minimal tree coverage and existing infrastructure access. The transition zone between the Cross Timbers forest and the open prairie provides the best balance of clear land and reasonable terrain. Locations situated away from the immediate lake shore and major creek valleys would be preferable to avoid environmental sensitivities and potential flooding issues. The slightly elevated positions also tend to experience better air circulation, which can help maintain optimal operating temperatures for solar equipment. Areas with existing utility corridor access or proximity to electrical transmission infrastructure would provide additional advantages for large-scale solar development. The relatively stable soil conditions found on the limestone-based terrain offer good foundation characteristics for mounting systems and related infrastructure.

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.