Arnold, Maryland, located in the Northern Temperate Zone at coordinates 39.0321, -76.5027, offers a moderately favorable environment for solar PV energy generation throughout the year. The location experiences significant seasonal variations in solar energy production, which is typical for its latitude.
Seasonal Solar Performance
Summer stands out as the most productive season for solar energy in Arnold, with an average daily output of 6.43 kWh per kW of installed solar capacity. This high performance is due to longer daylight hours and more direct sunlight during the summer months. Spring follows as the second-most productive season, generating an average of 5.64 kWh per day per kW installed. The increasing daylight hours and generally clearer skies contribute to this strong performance. Autumn sees a noticeable decrease in solar production, with an average of 3.77 kWh per day per kW installed. This reduction is primarily due to shorter days and the sun's lower position in the sky. Winter presents the greatest challenge for solar energy production in Arnold, with an average daily output of only 2.26 kWh per kW installed. The combination of shorter days, lower sun angle, and potentially more cloudy weather contributes to this reduced performance.Optimal Panel Installation
To maximize year-round solar energy production in Arnold, fixed solar panels should be installed at a tilt angle of 34 degrees facing south. This angle optimizes the panels' exposure to sunlight throughout the year, balancing the seasonal variations in sun position.Environmental and Weather Factors
While Arnold's location is generally suitable for solar energy production, there are some environmental and weather factors that could impact system performance: 1. Snow accumulation in winter: Arnold experiences occasional snowfall, which can temporarily reduce solar panel efficiency. Installing panels at the recommended angle helps snow slide off more easily. 2. Tree shading: The area has significant tree coverage, which could potentially cast shadows on solar panels. Careful site assessment and strategic panel placement can mitigate this issue. 3. Humidity and air pollution: Being close to the Chesapeake Bay, Arnold experiences higher humidity levels, which can slightly reduce solar panel efficiency. Regular cleaning of panels can help maintain optimal performance. To address these factors, consider the following preventative measures:- Use high-quality, durable panels that can withstand local weather conditions
- Implement a regular cleaning and maintenance schedule
- Consider adding a monitoring system to track performance and quickly identify any issues
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 Arnold
Seasonal solar PV output for Latitude: 39.0321, Longitude: -76.5027 (Arnold, 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 34° South in Arnold, United States
To maximize your solar PV system's energy output in Arnold, United States (Lat/Long 39.0321, -76.5027) throughout the year, you should tilt your panels at an angle of 34° 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 Arnold, 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 Arnold, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 34° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 23° South in Summer | 43° South in Autumn | 54° South in Winter | 32° 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 Arnold, 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 Arnold, 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 Arnold, United States
The area around Arnold, United States (located at 39.0321 latitude, -76.5027 longitude) is characterized by gently rolling terrain typical of the Chesapeake Bay region. This part of Maryland is situated on the western shore of the Chesapeake Bay, featuring a mix of low-lying coastal plains and slightly elevated areas.
The topography in and around Arnold is relatively mild, with elevations generally ranging from sea level to about 100 feet above sea level. The landscape is dotted with small hills and shallow valleys, creating a subtle undulating effect. Many creeks and rivers cut through the area, forming small peninsulas and inlets along the coastline.
The region is part of the Atlantic Coastal Plain, which is known for its flat to gently sloping terrain. This geological feature extends from the fall line (where the coastal plain meets the Piedmont region) eastward to the Chesapeake Bay and Atlantic Ocean. The soil in this area is typically composed of sand, silt, and clay, which has been deposited over millions of years by rivers and ocean currents.
Regarding areas nearby that would be most suited to large-scale solar PV (photovoltaic) installations, there are a few factors to consider. Ideally, solar farms require relatively flat, open spaces with good sun exposure. While the immediate vicinity of Arnold may not be ideal due to its suburban nature and proximity to the bay, there are potential areas within a reasonable distance that could be suitable:
1. Agricultural lands to the west and southwest of Arnold, particularly in Anne Arundel and Prince George's counties, might offer suitable locations. These areas often have large, open fields that could accommodate solar arrays.
2. Former industrial sites or brownfields in the greater Baltimore-Washington metropolitan area could be repurposed for solar energy production. These locations often have the advantage of being already developed and close to existing power infrastructure.
3. Less densely populated areas to the south, such as in Calvert or Charles counties, might have suitable open spaces for large-scale solar installations.
It's important to note that any large-scale solar PV project would need to undergo thorough environmental and zoning assessments, as well as consider the impact on local communities and ecosystems. The proximity to the Chesapeake Bay also means that potential effects on water resources and wildlife habitats would need to be carefully evaluated.
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: Wednesday 9th of October 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.




