Romeoville, Illinois, located in the United States at latitude 41.6475 and longitude -88.0895, offers varying potential for solar PV energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal fluctuations in solar production.

Seasonal Solar Production

Solar panels in Romeoville produce their highest output during summer months, generating approximately 6.25kWh of electricity per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 5.29kWh/day per installed kilowatt.

Production decreases substantially during autumn, dropping to 3.39kWh/day, and reaches its lowest point in winter with just 2.35kWh/day per kilowatt of installed capacity. This creates a nearly threefold difference between summer and winter production rates.

Optimal Panel Installation

For fixed solar panel installations in Romeoville, the ideal tilt angle to maximize year-round energy production is 36 degrees facing South. This angle optimizes the capture of available sunlight throughout the changing seasons, balancing the higher summer sun with the lower winter sun position.

Environmental and Weather Considerations

Several factors can impact solar production at this location. Romeoville experiences significant snowfall during winter months, which can cover panels and reduce output during an already low-production season. Installing panels at the recommended 36-degree tilt helps shed snow more effectively than flatter installations.

The area also experiences cloudy conditions, particularly during late autumn and winter. This cloud cover, combined with the shorter days of winter, contributes to the substantial seasonal production difference.

Occasional severe weather, including thunderstorms and hail during spring and summer, poses risks to solar installations. Using impact-resistant panels and proper mounting systems can mitigate potential damage.

Preventative Measures

To optimize solar production in Romeoville, consider these practical steps:

• Install snow-shedding features or implement periodic snow removal procedures during winter
• Use microinverters or power optimizers to minimize the impact of partial panel shading
• Select panels with good low-light performance to maximize output during cloudy periods
• Ensure adequate spacing between panel rows to prevent self-shading, especially during winter months when sun angles are lower
• Consider slightly oversizing the system to compensate for the significant winter production decrease

While not ideal year-round, Romeoville still offers viable solar potential, especially if system design accounts for these seasonal and environmental factors.

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 Romeoville

Seasonal solar PV output for Latitude: 41.6475, Longitude: -88.0895 (Romeoville, 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 36° South in Romeoville, United States

To maximize your solar PV system's energy output in Romeoville, United States (Lat/Long 41.6475, -88.0895) throughout the year, you should tilt your panels at an angle of 36° 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 Romeoville, 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 Romeoville, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 36° 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	45° South in Autumn	55° 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 Romeoville, 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 Romeoville, United States.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. 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 Romeoville, United States

Romeoville, Illinois, is situated in Will County, approximately 26 miles southwest of Chicago. The topography of this area is characterized by gently rolling terrain typical of the Midwestern United States. The landscape was primarily shaped by glacial activity during the Pleistocene epoch, resulting in a relatively flat to moderately undulating surface with subtle elevation changes throughout the region. The village sits at an average elevation of approximately 600 feet (183 meters) above sea level. The terrain around Romeoville features a mix of open spaces, suburban development, and industrial areas. The Des Plaines River flows through the eastern portion of the village, creating a shallow valley that represents one of the more significant topographical features in the immediate area.

Geological Features

The bedrock beneath Romeoville consists primarily of Silurian-age dolomite, which is occasionally exposed at the surface, particularly near waterways and quarries. This bedrock is overlain by glacial till and other deposits left behind by the Wisconsin glaciation. These deposits contribute to the generally fertile soils of the region. To the west of Romeoville, the landscape gradually transitions into more rural agricultural land with open fields and scattered woodlots. The eastern portions, particularly along the Des Plaines River, include some modest bluffs and slightly more varied terrain.

Potential for Solar PV Development

For large-scale solar photovoltaic (PV) installations, several areas near Romeoville offer favorable conditions. The relatively flat agricultural lands to the south and southwest of Romeoville provide ideal settings for solar farms due to their minimal shading, good drainage, and existing access to transportation infrastructure. Specifically, the agricultural areas extending toward Lockport and Joliet would be well-suited for large-scale solar development. These locations offer large, contiguous parcels of relatively level land with minimal tree cover that would otherwise cause shading issues for solar arrays. Former industrial sites and brownfields in the region also present opportunities for solar development. Romeoville has a history of industrial activity, particularly related to petroleum refining and distribution, leaving some previously developed sites that could be repurposed for renewable energy production.

Topographical Considerations

When evaluating specific sites for solar PV installations near Romeoville, several topographical factors should be considered: The slight north-south slope of many areas is actually beneficial for solar arrays in this northern latitude, as south-facing gentle slopes can improve the efficiency of fixed solar panels. Drainage patterns must be carefully evaluated, especially in the flatter areas where seasonal ponding might occur. The glacial soils typically provide reasonable drainage, but site-specific assessments would be necessary. Areas near the Des Plaines River valley should be approached with caution due to potential flooding concerns, though the elevated terraces above the floodplain could offer suitable locations with good southern exposure. The northern Illinois region experiences seasonal weather extremes, including snow accumulation in winter and occasional severe storms in summer. The generally flat terrain does not provide natural wind protection, so solar installations would need to be engineered to withstand these conditions. Overall, the topography around Romeoville presents few major obstacles to large-scale solar development, with ample suitable land available within a reasonable radius of the village. The combination of relatively flat terrain, existing grid infrastructure from the area's industrial development, and proximity to major electricity markets makes this region potentially attractive for solar energy investment.

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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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.