Solar PV Analysis of Appleton, United States
Appleton, Wisconsin, located in the Northern Temperate Zone, presents a mixed scenario for year-round solar energy generation. The city experiences significant seasonal variations in solar potential, which impacts the overall efficiency of photovoltaic (PV) systems throughout the year.
Seasonal Solar Performance
Solar energy production in Appleton peaks during the summer months, with an average daily output of 6.48 kWh per kW of installed capacity. Spring follows as the second-most productive season, generating 5.18 kWh/day. However, autumn and winter see a substantial drop in solar potential, with outputs of 3.20 kWh/day and 2.12 kWh/day, respectively.
These figures indicate that Appleton's location is most ideal for solar energy generation from late spring through early fall. During this period, longer days and higher sun angles contribute to increased solar irradiance, maximizing PV system efficiency.
Optimizing Solar Panel Installation
To maximize year-round solar energy production in Appleton, fixed solar panels should be installed at a tilt angle of 38 degrees facing south. This optimal angle helps balance energy capture across seasons, compensating for the sun's varying position throughout the year.
Environmental and Weather Factors
Several environmental and weather factors can impact solar energy production in Appleton:
- Snowfall: Appleton receives significant snowfall during winter months, which can cover solar panels and reduce efficiency.
- Cloud cover: The region experiences frequent cloud cover, particularly in autumn and winter, which can diminish solar irradiance.
To mitigate these factors, consider the following preventative measures:
1. Install panels at a steeper angle to promote snow sliding off more easily.
2. Use snow-shedding coatings on panel surfaces to reduce snow accumulation.
3. Implement a regular panel cleaning schedule, especially after heavy snowfall.
4. Consider using microinverters or power optimizers to minimize the impact of partial shading from clouds or snow.
While Appleton's location presents challenges for year-round solar energy production, proper system design and maintenance can help maximize efficiency and output, particularly during the more favorable months of late spring through early fall.
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 Appleton
Seasonal solar PV output for Latitude: 44.277, Longitude: -88.4011 (Appleton, 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 38° South in Appleton, United States
To maximize your solar PV system's energy output in Appleton, United States (Lat/Long 44.277, -88.4011) throughout the year, you should tilt your panels at an angle of 38° 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 Appleton, 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 Appleton, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 38° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 28° South in Summer | 48° South in Autumn | 58° South in Winter | 37° 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 Appleton, 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 Appleton, 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 Appleton, United States
The topography around Appleton, Wisconsin, is generally characterized by gently rolling terrain. This area is part of the Eastern Ridges and Lowlands region of Wisconsin, which was shaped by glacial activity thousands of years ago. The landscape is a mix of low hills, shallow valleys, and relatively flat areas.
The Fox River, which runs through Appleton, has carved a shallow valley in the region. This river valley is flanked by slightly higher areas on either side. As you move away from the river, the land gradually rises, but the elevation changes are generally modest. The surrounding countryside consists of a patchwork of agricultural fields, wooded areas, and scattered urban and suburban developments.
In terms of large-scale solar PV installations, the areas most suited would likely be found outside the immediate urban area of Appleton. The ideal locations would be:
- Open agricultural land: The flat or gently sloping farmland to the north and west of Appleton could be suitable for solar farms. These areas often have large, unobstructed spaces that receive good sunlight exposure.
- Former industrial sites: Any brownfield sites or former industrial areas on the outskirts of the city might be repurposed for solar installations, combining land reclamation with renewable energy production.
- Elevated areas: While the region isn't particularly hilly, any slightly higher ground that isn't forested could be advantageous for solar panels, as it may receive more consistent sunlight throughout the day.
It's important to note that while the topography around Appleton is generally favorable for solar installations, other factors such as local zoning laws, grid connection availability, and environmental considerations would also play crucial roles in determining the most suitable locations for large-scale solar PV 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!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 19th of August 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.
