Carlinville, Illinois, located in the Northern Temperate Zone at coordinates 39.2798, -89.8818, offers a moderate potential for solar energy generation throughout the year. The location experiences significant seasonal variations in solar output, which impacts the overall efficiency of solar PV systems.

Seasonal Solar Performance

Summer stands out as the most productive season for solar energy in Carlinville, with an average daily output of 6.53 kWh per kW of installed solar capacity. This high performance is due to longer daylight hours and more direct sunlight during the summer months. Spring follows as the second-best season, generating an average of 5.34 kWh per day. The increasing daylight hours and improving weather conditions contribute to this favorable output. Autumn sees a significant decrease in solar production, with an average daily output of 3.72 kWh. This decline is attributed to shorter days and the sun's lower position in the sky. Winter presents the greatest challenge for solar energy generation in Carlinville, with a daily average of only 2.20 kWh. The combination of shorter days, lower sun angles, and potential snow cover contributes to this reduced output.

Optimal Panel Placement

For fixed panel installations in Carlinville, the ideal tilt angle to maximize year-round solar production is 34 degrees facing South. This angle helps optimize energy capture across all seasons, balancing the high summer sun with the lower winter sun position.

Environmental and Weather Factors

Several factors can impact solar production in Carlinville: 1. Snow cover: Winter snowfall can temporarily reduce panel efficiency by blocking sunlight. Regular panel cleaning or installing panels at a steeper angle can help mitigate this issue. 2. Cloud cover: Carlinville experiences partly cloudy conditions throughout the year, which can affect solar output. Using high-efficiency panels and microinverters can help maximize production during cloudy periods. 3. Temperature extremes: While rare, very high summer temperatures can slightly reduce panel efficiency. Ensuring proper ventilation behind the panels can help maintain optimal performance. To address these factors, consider using snow-shedding panel designs, implementing a regular cleaning schedule, and selecting panels with good low-light performance. Additionally, a ground-mounted system with adjustable tilt angles could allow for seasonal optimization, improving overall yearly output. In conclusion, while Carlinville's location presents some challenges for year-round solar energy production, particularly in winter, it still offers good potential for solar PV systems. With proper planning and installation techniques, residents can effectively harness solar energy to meet a significant portion of their electricity needs.

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 Carlinville

Seasonal solar PV output for Latitude: 39.2798, Longitude: -89.8818 (Carlinville, 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 34° South in Carlinville, United States

To maximize your solar PV system's energy output in Carlinville, United States (Lat/Long 39.2798, -89.8818) throughout the year, you should tilt your panels at an angle of 34° 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 Carlinville, 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 Carlinville, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 34° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
23° South in Summer	43° South in Autumn	54° South in Winter	32° 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 Carlinville, 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 Carlinville, 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 Carlinville, United States

The topography around Carlinville, Illinois, in the United States, is characterized by gently rolling plains and subtle hills typical of the Midwestern prairie landscape. This area, located in Macoupin County, sits on the edge of what is known as the Till Plains section of the Central Lowland province. The terrain is predominantly flat to slightly undulating, with occasional shallow valleys and low ridges breaking up the otherwise level landscape. The region surrounding Carlinville was shaped by glacial activity during the last ice age, resulting in a layer of fertile soil atop bedrock. This glacial legacy has left behind a mix of prairie and woodland areas, with scattered wetlands and small streams crisscrossing the terrain. The elevation in this area generally ranges from about 600 to 700 feet above sea level, with only minor variations across the landscape.

Potential for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, several factors come into play. The relatively flat terrain around Carlinville offers advantages for solar development, as it minimizes the need for extensive land grading and allows for efficient panel placement. The agricultural lands surrounding Carlinville present opportunities for solar farm development. These open spaces receive ample sunlight and have few obstructions, making them potentially suitable for large-scale solar projects. Areas to the south and west of Carlinville might be particularly appealing, as they tend to have slightly more elevated and open terrain, potentially maximizing sun exposure throughout the day. However, it's important to note that the suitability of specific sites would depend on various factors beyond just topography. These include proximity to existing electrical infrastructure, local zoning regulations, soil conditions, and environmental considerations. Additionally, the presence of prime farmland in the region may lead to competing interests between agricultural use and renewable energy development. Overall, while the topography around Carlinville is generally favorable for solar PV installations, detailed site-specific assessments would be necessary to determine the most optimal locations for large-scale solar projects in the area.

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.