Saint Johns, Michigan, located in the Northern Temperate Zone, presents a moderately suitable location for year-round solar energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Performance

The solar energy output at this location shows dramatic seasonal swings. Summer delivers the strongest performance at 6.31 kWh per day per kW of installed capacity, making it an excellent time for solar generation. Spring follows as the second-best season with 5.32 kWh per day per kW, providing nearly comparable output to summer months. However, the location faces considerable challenges during colder months. Autumn production drops to 2.92 kWh per day per kW, while winter presents the most difficult conditions with only 1.93 kWh per day per kW. This represents a more than three-fold difference between peak summer and winter production.

Optimal Installation Configuration

For maximum year-round energy production at Saint Johns, Michigan, solar panels should be installed at a fixed tilt angle of 37 degrees facing south. This angle has been calculated to optimize total annual output by accounting for the sun's changing position throughout the year and weighting for actual solar potential at this latitude.

Local Environmental Factors

Several environmental and weather factors in Saint Johns, Michigan can significantly impact solar energy production:

• Snow accumulation: Michigan winters bring substantial snowfall that can completely block solar panels, eliminating energy production until cleared
• Ice formation: Freezing rain and ice storms can create persistent coverings on panels that are difficult to remove naturally
• Cloud cover: The Great Lakes region experiences frequent overcast conditions, particularly during autumn and winter months
• Lake-effect weather: Proximity to the Great Lakes can create additional cloud cover and precipitation patterns

Preventative Installation Measures

Several installation strategies can help maximize solar production despite these challenges:

• Steeper tilt angles: While 37 degrees is optimal for year-round production, slightly steeper angles can help snow slide off more easily
• Panel spacing: Adequate spacing between panel rows prevents snow accumulation in shadowed areas
• Quality mounting systems: Robust mounting designed for snow loads and high winds typical of Michigan weather
• Accessible placement: Positioning panels where they can be safely cleared of snow when necessary
• Micro-inverters or power optimizers: These technologies prevent one shaded or snow-covered panel from reducing the output of an entire string

The location's solar potential is reasonable during warm months but requires realistic expectations for winter performance. Property owners should size their systems accounting for the significant seasonal variation and consider battery storage or grid-tie arrangements to manage the uneven energy production 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 Saint Johns, Michigan

Seasonal solar PV output for Latitude: 43.004, Longitude: -84.5693 (Saint Johns, Michigan, 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 Saint Johns, Michigan, United States

To maximize your solar PV system's energy output in Saint Johns, Michigan, United States (Lat/Long 43.004, -84.5693) 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 Saint Johns, Michigan, 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 Saint Johns, Michigan, 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
27° South in Summer	46° South in Autumn	57° South in Winter	36° 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 Saint Johns, Michigan, 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 Saint Johns, Michigan, 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 Saint Johns, Michigan, United States

Topographical Features Around Saint Johns

Saint Johns, Michigan sits within the gently rolling landscape characteristic of south-central Michigan's glacial till plains. The terrain around this Gratiot County community is predominantly flat to gently undulating, with elevation changes typically ranging from modest hills to shallow valleys carved by ancient glacial activity. The area lies at a moderate elevation above sea level, positioned within the broader Great Lakes lowland region that defines much of Michigan's interior landscape.

The topography immediately surrounding Saint Johns consists primarily of agricultural land with gentle slopes that rarely exceed ten degrees. These gradual inclines were formed by glacial deposits left behind during the last ice age, creating a landscape of low ridges separated by broad, shallow depressions. Small streams and drainage ditches wind through the area, creating minor topographical variations but nothing that significantly disrupts the overall gentle character of the terrain.

The region features scattered woodlots and tree lines that break up the predominantly open agricultural landscape. These forested areas tend to follow natural drainage patterns and property boundaries, creating a patchwork effect across the countryside. The soil composition consists largely of glacial till and outwash materials, supporting the area's agricultural economy while also providing stable ground conditions for potential development projects.

Optimal Areas for Large-Scale Solar Development

The relatively flat agricultural lands extending south and southwest of Saint Johns present the most promising opportunities for large-scale solar photovoltaic installations. These areas offer extensive open spaces with minimal topographical obstacles, allowing for efficient panel placement and maintenance access. The gentle southern-facing slopes found throughout this region would provide optimal orientation for solar collection while maintaining the gradual grades necessary for proper drainage and equipment stability.

Fields located along the major transportation corridors, particularly those near Highway 27 and other state routes, would offer additional advantages for solar development due to existing infrastructure and utility access. The open agricultural areas in these locations typically feature minimal shading from trees or structures, creating ideal conditions for consistent solar exposure throughout the day.

The eastern portions of the surrounding area also show strong potential, where the landscape opens into broad, gently rolling farmland with good southern exposure. These locations benefit from the same favorable topographical conditions while potentially offering larger contiguous parcels suitable for utility-scale installations. The stable soil conditions and minimal slope variations in these areas would help reduce construction and maintenance costs while maximizing energy production efficiency.

Areas to the north and northwest of Saint Johns, while still relatively flat, tend to have more scattered development and smaller field sizes that might be less suitable for large-scale projects. The presence of more residential areas and fragmented land ownership patterns in these directions could present additional challenges for major solar installations, making the southern and eastern agricultural zones the most practical choices for significant solar development initiatives.

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.