Solar Energy Potential in La Porte City, Iowa
La Porte City, Iowa, located in the Northern Temperate Zone, offers varying potential for solar energy generation throughout the year. The location's seasonal solar output provides insights into its suitability for photovoltaic (PV) installations. Summer presents the most favorable conditions for solar energy production, with an average daily output of 6.67 kWh per kW of installed solar capacity. This high yield is due to longer daylight hours and more direct sunlight. Spring follows as the second-best season, generating 5.18 kWh/day per kW, benefiting from increasing daylight and moderating temperatures. Autumn sees a significant decrease in solar potential, with 3.52 kWh/day per kW. This reduction is attributed to shorter days and the sun's lower position in the sky. Winter offers the least favorable conditions, producing only 2.56 kWh/day per kW, due to the shortest days and the sun's lowest angle.Optimizing Solar Panel Installation
To maximize year-round solar energy production in La Porte City, fixed solar panels should be tilted at a 37-degree angle facing south. This optimal angle ensures the panels capture the most sunlight throughout the year, accounting for seasonal variations in the sun's position.Environmental and Weather Considerations
Several factors can impact solar energy production in La Porte City: 1. Snow accumulation in winter can reduce panel efficiency. Regular panel cleaning or installing panels at a steeper angle can help mitigate this issue. 2. Cloudy days, particularly common in spring and fall, may decrease solar output. Using high-efficiency panels can help maximize energy production even in less-than-ideal conditions. 3. Potential shading from nearby trees or buildings should be considered when choosing panel locations to ensure optimal sun exposure. By addressing these factors during installation and maintenance, La Porte City residents can enhance their solar energy systems' performance and reliability 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 La Porte City
Seasonal solar PV output for Latitude: 42.315, Longitude: -92.1921 (La Porte City, 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 La Porte City, United States
To maximize your solar PV system's energy output in La Porte City, United States (Lat/Long 42.315, -92.1921) 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 La Porte City, 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 La Porte City, 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 | 46° South in Autumn | 56° 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 La Porte City, 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 La Porte City, 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 La Porte City, United States
La Porte City, located in eastern Iowa, is situated in a region characterized by gently rolling hills and fertile plains. The topography surrounding the city is primarily composed of low-lying areas interspersed with subtle elevations, creating a picturesque landscape typical of the American Midwest. The terrain gradually slopes towards the Cedar River, which flows to the east of the city. The area around La Porte City features a mix of agricultural land, wooded areas, and small streams. Fields of corn and soybeans dominate the landscape, broken up by patches of deciduous forests and grasslands. The relatively flat nature of the land is a result of glacial activity during the last ice age, which left behind rich soil deposits ideal for farming.
Solar PV Potential
When considering areas nearby that would be most suited to large-scale solar PV installations, several factors come into play. The gently rolling terrain surrounding La Porte City offers numerous potential sites for solar farms. The open agricultural lands to the south and west of the city are particularly promising, as they provide expansive, unobstructed areas with good sun exposure throughout the day. These locations benefit from minimal shading from trees or buildings, allowing for maximum solar energy capture. The slight elevations in certain areas could also be advantageous, as they may receive more direct sunlight and experience less ground-level fog or mist that could potentially reduce solar efficiency. However, it's important to note that while the topography is generally favorable for solar PV, other factors such as grid connectivity, land ownership, and environmental considerations would need to be taken into account when planning any large-scale solar installations in the region. The areas to the north and east of La Porte City, while still potentially suitable, may be slightly less ideal due to the presence of more wooded areas and the proximity to the Cedar River, which could impact land availability and increase the risk of flooding in some locations. Overall, the relatively flat and open nature of the landscape surrounding La Porte City presents numerous opportunities for solar energy development, with the agricultural lands to the south and west offering the most promising conditions 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!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 28th of February 2025
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.




