The location at Martinsburg, West Virginia is moderately suitable for generating solar energy year-round. The best time of the year to generate solar energy here would be during the summer and spring months when the output per kilowatt (kW) of installed solar photovoltaic (PV) system is highest, producing 6.31 and 5.51 kilowatt-hours (kWh) per day respectively.
In autumn, the output decreases to 3.70 kWh/day and it drops further in winter to only about 2.27 kWh/day due to shorter daylight hours and less intense sunlight.
If you're planning a fixed panel installation at this location, tilting your panels at an angle of 34 degrees towards south would give you maximum total yearly production from your PV system.
However, there are local environmental factors that could potentially reduce solar production in Martinsburg. This area experiences a moderate amount of cloud cover throughout the year which can reduce sunlight exposure on panels thus reducing their efficiency.
Also, snowfall during winter can cover up panels blocking sunlight completely until they are cleared off again which means no power generation until then.
To mitigate these issues:
1) Install your panels in a place where they get maximum sun exposure with little or no shading from nearby trees or buildings.
2) Consider using microinverters or power optimizers as part of your installation - these devices allow each panel to operate independently so if one panel's performance is affected by clouds or shade it doesn't drag down the performance of other panels.
3) Regularly clean and maintain your panels especially after heavy snowfall; keeping them clear will help ensure optimal operation.
So overall while Martinsburg isn't perfect for solar power generation due its weather conditions particularly cloudy skies and snowy winters; with careful positioning, appropriate tilt angle and regular maintenance you should still be able to generate a decent amount of electricity from a PV system installed there most times throughout the year.
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 Martinsburg
Seasonal solar PV output for Latitude: 39.4889, Longitude: -77.8889 (Martinsburg, 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 Martinsburg, United States
To maximize your solar PV system's energy output in Martinsburg, United States (Lat/Long 39.4889, -77.8889) 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 Martinsburg, 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 Martinsburg, 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 | 44° South in Autumn | 55° 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 Martinsburg, 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 Martinsburg, 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 Martinsburg, United States
Martinsburg, United States, is located in the Eastern Panhandle of West Virginia and is part of the Hagerstown-Martinsburg Metropolitan Area. The topography around Martinsburg is characterized by gently rolling hills with some flat plains and valleys. The region has a mix of urban areas, farmland, and forested land.
For large-scale solar PV installations, flat or gently sloping lands are ideal as they require less work for site preparation and allow for easier installation and maintenance. Therefore, unused farmlands or open fields would be suitable locations around Martinsburg.
However, it's also important to consider other factors such as local climate (amount of sunlight received), proximity to electrical grids for power transmission, potential environmental impacts (like effects on local wildlife), land use regulations etc., before deciding on a location for large-scale solar PV installations.
In terms of sunlight exposure - West Virginia has moderate levels of sunlight suitable for solar energy generation according to NREL (National Renewable Energy Laboratory). It gets an average 4-5 hours peak sun per day which can support solar power production.
To identify specific locations that would be most suited to large-scale solar PV installations near Martinsburg detailed surveys would need to be carried out taking into account all these factors.
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: Thursday 16th of May 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.




