Solar PV Analysis of Iowa City, United States
Iowa City, located in the United States, has varying levels of solar energy production throughout the year. During summer months, you can expect to generate about 6.53 kilowatt-hours (kWh) per day for every kilowatt (kW) of solar panels installed. This drops to around 3.66 kWh/day in autumn and even lower to 2.62 kWh/day during winter months due to shorter daylight hours and less intense sunlight. However, in spring, it increases again up to approximately 5.19 kWh/day.
Therefore, if you're planning on using solar panels for energy generation in Iowa City, the best times would be during late spring and throughout summer when sunlight is most abundant.
To maximize your year-round solar energy production at this location, your solar PV panel should ideally be tilted at an angle of 37 degrees facing Southwards. This position allows the panel to capture as much sunlight as possible over the course of a day throughout different seasons.
As far as local factors that might affect your solar energy production are concerned - Iowa City does have seasonal weather changes that could impact output like snowfall or heavy cloud cover during winter which may obstruct direct sunlight reaching your panels.
One way around this is by installing a system that allows you to adjust your panels' tilt angle according to season changes so they always face directly towards the sun's path across the sky - maximizing their exposure even with less intense winter sun or shorter daylight hours.
Additionally, regular cleaning and maintenance of your panels will ensure they are free from dust or snow accumulation which could hinder their performance by blocking sunlight absorption into them.
In summary: while there are some challenges with seasonal weather variations in Iowa City affecting consistent year-round high-levels of solar power generation - these can largely be mitigated through appropriate installation choices such as adjustable tilt angles for different seasons and regular maintenance/cleaning schedules for optimal performance despite local environmental conditions.
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 Iowa City
Seasonal solar PV output for Latitude: 41.6622, Longitude: -91.5149 (Iowa 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 Iowa City, United States
To maximize your solar PV system's energy output in Iowa City, United States (Lat/Long 41.6622, -91.5149) 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 Iowa 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 Iowa 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 |
|---|---|---|---|
| 25° South in Summer | 46° South in Autumn | 56° South in Winter | 34° 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 Iowa 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 Iowa 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 Iowa City, United States
Iowa City is located in the Midwestern United States, within the state of Iowa. The topography around this city is characterized by a mix of flat and gently rolling plains. The area was historically covered with tallgrass prairie and savanna, but has been mostly converted to agriculture.
The region's relatively flat terrain makes it suitable for large-scale solar PV installations. However, there are several factors to consider when choosing a site for such a project:
1) Sunlight: The amount of sunlight an area receives is crucial for solar energy production. Iowa has moderate levels of sunlight compared to other states in the U.S., so areas that receive more sun hours would be preferable.
2) Land use: Large-scale solar PV requires significant land area. Therefore, areas with less productive agricultural land or unused industrial sites could be suitable.
3) Proximity to grid infrastructure: To transmit the electricity generated by a solar farm, it should ideally be located near existing power lines or substations.
4) Environmental impact: Areas that are not ecologically sensitive or have low biodiversity would be more suitable to avoid negative environmental impacts.
Given these considerations, potential locations could include underutilized farmland or industrial sites in Johnson County where Iowa City is located, or neighboring counties like Linn County and Cedar County which have similar topography and sun exposure.
Please note that before any large scale installation can take place there will need to be extensive surveys and studies conducted on potential sites including environmental impact assessments and grid connection feasibility studies among others.
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: Thursday 8th of February 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.
