Washington, Louisiana, United States offers a reasonably good location for year-round solar energy generation, though with notable seasonal variations typical of its Northern Sub-Tropical climate at coordinates 30.6163, -92.0571.

Seasonal Solar Performance

The solar output data shows clear seasonal patterns that reflect the area's climate. Summer delivers the strongest performance at 6.41 kWh per day per kW of installed solar capacity, making it the prime season for solar energy generation. Spring follows as the second-best season with 5.34 kWh per day per kW, offering excellent production levels as daylight hours increase and weather conditions improve. Autumn shows moderate performance at 4.66 kWh per day per kW, while winter represents the challenging season with only 3.13 kWh per day per kW. This winter reduction is significant but not uncommon for locations at this latitude. For optimal year-round energy capture, solar panels should be installed at a fixed tilt angle of 27 degrees facing south. This angle maximizes total annual production by accounting for the sun's changing position throughout the year and weighting for the solar irradiance potential at this specific location.

Environmental and Weather Challenges

Several local factors in Washington, Louisiana can significantly impact solar energy production and require careful consideration during installation:

• Hurricane and severe storm activity: Louisiana's Gulf Coast location makes it vulnerable to hurricanes and severe thunderstorms, which can damage panels and mounting systems
• High humidity and moisture: The subtropical climate creates persistent humidity that can lead to corrosion of electrical components and reduced panel efficiency
• Heavy rainfall and flooding: Frequent intense rainfall and potential flooding can affect ground-mounted systems and electrical connections
• Salt air exposure: Proximity to the Gulf of Mexico means salt-laden air can accelerate corrosion of metal components

Preventative Installation Measures

To maximize solar energy production despite these challenges, several protective measures should be implemented. Wind-resistant mounting systems rated for hurricane-force winds are essential, along with proper grounding and surge protection to handle severe weather events. All electrical components should feature marine-grade or tropical-rated sealing to resist humidity and moisture penetration. Stainless steel or specially coated mounting hardware will better withstand the corrosive effects of salt air and high humidity. Elevated installations help avoid flood damage, while ensuring proper drainage around ground-mounted systems prevents water accumulation. Regular cleaning schedules become more important in this climate to remove salt deposits, pollen, and debris that can reduce panel efficiency. Installing monitoring systems allows for quick detection of performance issues, while choosing panels with strong warranties against environmental degradation provides long-term protection for the investment.

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 Washington, Louisiana

Seasonal solar PV output for Latitude: 30.6163, Longitude: -92.0571 (Washington, Louisiana, 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 27° South in Washington, Louisiana, United States

To maximize your solar PV system's energy output in Washington, Louisiana, United States (Lat/Long 30.6163, -92.0571) throughout the year, you should tilt your panels at an angle of 27° 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 Washington, Louisiana, 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 Washington, Louisiana, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 27° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
15° South in Summer	36° South in Autumn	46° South in Winter	24° 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 Washington, Louisiana, 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 Washington, Louisiana, 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 Washington, Louisiana, United States

Topographical Features of the Washington, Louisiana Region

The area around Washington, Louisiana is characterized by the gentle, low-lying terrain typical of south-central Louisiana's coastal plain region. This landscape sits at an elevation of approximately 30 feet above sea level, with minimal variation in height across the surrounding countryside. The topography consists primarily of flat to gently rolling agricultural land, interspersed with wetlands, bayous, and small waterways that are characteristic of Louisiana's Acadiana region.

The terrain here was shaped by ancient river deposits and coastal processes, creating a relatively uniform landscape with subtle undulations. Small ridges and natural levees formed by historical river channels provide the only notable elevation changes, though these rarely exceed 50 feet in height. The soil composition includes fertile alluvial deposits mixed with clay and sandy loam, supporting the region's agricultural activities while remaining stable enough for development.

Wetland areas and seasonal flooding zones dot the landscape, particularly in lower-lying sections near Bayou Courtableau and other waterways. These areas experience periodic inundation during heavy rainfall periods, creating a patchwork of suitable and unsuitable land for various types of development.

Optimal Areas for Large-Scale Solar Development

The relatively flat topography throughout the Washington, Louisiana area presents numerous opportunities for large-scale solar photovoltaic installations. The most suitable locations would be the elevated agricultural fields and pastureland that occupy much of the surrounding countryside. These areas offer level ground with good drainage, minimal shading from trees or structures, and existing access roads that could facilitate construction and maintenance activities.

Former agricultural fields that are no longer in active cultivation represent particularly attractive sites, as they typically feature cleared land with established property boundaries and utility access. The gentle rolling terrain in these areas provides natural drainage while maintaining the flat orientation ideal for solar panel arrays.

Areas along the slightly higher elevations near natural ridges and former river levees would be preferable to lower-lying sections that may be subject to seasonal flooding. These elevated zones, while still quite flat, offer better long-term stability and reduced risk of water-related damage to solar installations.

The region's agricultural character means that large contiguous parcels of suitable land are readily available, allowing for utility-scale solar farms that could span hundreds of acres. The existing rural road network and proximity to electrical transmission infrastructure further enhance the viability of solar development in this area.

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.