Solar Energy Potential in Greenfield, Indiana
Greenfield, Indiana, located in the Northern Temperate Zone, presents a moderate opportunity for solar energy generation. The location's potential for solar PV production varies significantly throughout the year, with distinct seasonal patterns. Summer stands out as the most productive season, with an average daily output of 6.22 kWh per kW of installed solar capacity. This high yield is due to longer daylight hours and more direct sunlight. Spring follows closely, generating 5.47 kWh per day, benefiting from increasing daylight and generally clear skies. Autumn sees a noticeable decrease in production, averaging 3.68 kWh per day. This reduction is attributed to shorter days and the sun's lower position in the sky. Winter presents the greatest challenge, with daily output dropping to just 2.14 kWh, less than half of the spring production and only about a third of summer's yield.Optimal Panel Positioning
For fixed panel installations in Greenfield, the ideal tilt angle to maximize year-round production is 34 degrees facing south. This angle optimizes the panels' exposure to sunlight throughout the year, balancing the seasonal variations in the sun's path across the sky.Environmental and Weather Considerations
While Greenfield's location is generally favorable for solar energy, there are some environmental factors to consider: 1. Snow accumulation in winter can temporarily reduce panel efficiency. 2. Occasional cloudy days, particularly in late autumn and winter, may impact production. 3. Potential for severe weather, including thunderstorms and tornadoes, could pose risks to solar installations. To mitigate these factors, consider the following preventative measures:- Install panels at the recommended 34-degree angle to facilitate snow sliding off
- Use high-quality, weather-resistant panels and mounting systems
- Implement a regular cleaning and maintenance schedule
- Consider a ground-mount system for easier access and maintenance
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 Greenfield, Indiana
Seasonal solar PV output for Latitude: 39.785, Longitude: -85.7694 (Greenfield, Indiana, 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 Greenfield, Indiana, United States
To maximize your solar PV system's energy output in Greenfield, Indiana, United States (Lat/Long 39.785, -85.7694) 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 Greenfield, Indiana, 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 Greenfield, Indiana, 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 |
|---|---|---|---|
| 24° South in Summer | 44° South in Autumn | 54° South in Winter | 33° 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 Greenfield, Indiana, 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 Greenfield, Indiana, 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 Greenfield, Indiana, United States
The topography around Greenfield, Indiana, located at latitude 39.785 and longitude -85.7694, is characterized by gently rolling hills and flat plains typical of the Midwestern United States. This area, part of the Central Till Plain region, was shaped by glacial activity during the last ice age, resulting in a landscape of subtle elevation changes and rich, fertile soil. The terrain surrounding Greenfield is predominantly flat to slightly undulating, with occasional low hills and shallow valleys. The elevation in this region generally ranges from about 800 to 900 feet above sea level, with minimal dramatic changes in altitude. This relatively uniform topography is punctuated by small streams and creeks that meander through the countryside, creating shallow depressions in the otherwise level landscape.
Potential for Large-Scale Solar PV
The areas surrounding Greenfield offer several promising locations for large-scale solar photovoltaic (PV) installations. The gently rolling terrain and abundance of open, flat land make much of the region suitable for solar energy development. Particularly well-suited areas include: 1. Agricultural lands: The vast expanses of farmland in the vicinity of Greenfield provide ample space for solar arrays. These areas are typically flat, unobstructed, and already cleared of vegetation, making them ideal for solar PV installations. 2. Former industrial sites: Any nearby brownfield sites or abandoned industrial areas could be repurposed for solar energy production, offering a sustainable solution for land use. 3. Open grasslands: Undeveloped grasslands or pastures in the region, especially those with southern exposure, would be excellent candidates for solar farms. 4. Gently sloping hillsides: South-facing slopes, even with minimal incline, can be advantageous for solar panel placement, potentially increasing energy capture throughout the day. When considering large-scale solar PV installations in this area, it's important to take into account factors such as proximity to existing power infrastructure, local zoning regulations, and potential environmental impacts. The relatively flat topography of the region generally simplifies the construction and maintenance of solar arrays, making much of the land around Greenfield potentially suitable for solar energy development.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 18th of April 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.




