Solar PV Analysis of Alta, United States
Alta, Iowa, located in the Northern Temperate Zone of the United States, presents a mixed picture for solar PV energy generation. The location's potential for solar power varies significantly throughout the year, with notable seasonal fluctuations in electricity output.
Seasonal Solar Performance
Summer stands out as the most productive season for solar energy in Alta, with an impressive 7.03 kWh per day for each kW of installed solar capacity. Spring follows as the second-best season, generating 5.40 kWh daily. However, the colder months see a substantial drop in solar output, with autumn producing 3.68 kWh and winter yielding only 2.67 kWh per day.
These figures indicate that Alta experiences significant seasonal variations in solar energy potential. The long, sunny days of summer provide ideal conditions for solar power generation, while the shorter, often overcast days of winter present challenges.
Optimal Panel Installation
To maximize year-round solar production in Alta, fixed solar panels should be installed at a tilt angle of 37 degrees facing south. This angle is calculated to optimize energy capture across all seasons, taking into account the location's latitude and the Earth's elliptical orbit.
Environmental and Weather Considerations
Alta's location in the Northern Temperate Zone means it experiences distinct seasons, which can impact solar energy production. Winters in Iowa can be particularly harsh, with heavy snowfall and ice accumulation potentially covering solar panels and reducing their efficiency. To mitigate this, installing panels at the recommended 37-degree angle can help snow and ice slide off more easily.
Another factor to consider is the region's propensity for severe weather, including thunderstorms and occasional tornadoes. While these events are typically infrequent, they can pose a risk to solar installations. Robust mounting systems and high-quality, weather-resistant panels are essential to withstand potential extreme weather conditions.
Preventative Measures
To ensure optimal solar energy production in Alta, consider the following measures:
- Use snow-shedding panel designs and regular winter maintenance to prevent snow accumulation
- Install a monitoring system to quickly identify and address any performance issues
- Choose durable, hail-resistant panels to withstand potential storm damage
- Implement a regular cleaning schedule to remove dust and debris, especially during drier seasons
While Alta may not have ideal year-round conditions for solar energy production, proper installation techniques and preventative measures can help maximize the potential of solar PV systems in this location.
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 Alta
Seasonal solar PV output for Latitude: 42.6736, Longitude: -95.2905 (Alta, 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 37° South in Alta, United States
To maximize your solar PV system's energy output in Alta, United States (Lat/Long 42.6736, -95.2905) throughout the year, you should tilt your panels at an angle of 37° 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 Alta, 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 Alta, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 37° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 26° South in Summer | 47° South in Autumn | 57° South in Winter | 35° 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 Alta, 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 Alta, 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 Alta, United States
The area around Alta, United States, located at latitude 42.6736 and longitude -95.2905, is characterized by gently rolling terrain typical of the Midwest region. This part of Iowa is situated within the Prairie Pothole Region, which was shaped by glacial activity during the last ice age. The landscape consists of low hills, shallow depressions, and relatively flat expanses interspersed with agricultural fields.
The topography in this area is generally mild, with gradual elevation changes rather than steep slopes or dramatic features. The land is primarily used for farming, with a patchwork of corn and soybean fields dominating the visual landscape. Small streams and drainage ditches crisscross the terrain, and scattered woodlots can be found, particularly along waterways.
Regarding areas nearby that would be most suited for large-scale solar PV (photovoltaic) installations, the gently rolling nature of the landscape provides several potential options. Ideal locations for solar farms would be on slightly elevated ground with a southern exposure, maximizing sunlight capture throughout the day. Areas of non-prime agricultural land or former farmland would be particularly suitable, as they often offer large, open spaces without the need for significant land clearing.
The relatively flat terrain to the south and southwest of Alta would likely offer good potential for solar PV development. These areas tend to have fewer obstructions that could cast shadows on solar panels, such as tall trees or buildings. Additionally, land that is slightly sloped towards the south would be advantageous, as it would naturally orient solar panels towards the sun's path.
It's important to note that while the topography is generally favorable for solar development, other factors such as proximity to electrical infrastructure, local zoning regulations, and environmental considerations would also play crucial roles in determining the most suitable locations for large-scale solar PV projects in the region around Alta.
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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 8th 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.
