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Flag of United StatesSolar PV Analysis of Caldwell, United States

Graph of hourly avg kWh electricity output per kW of Solar PV installed in Caldwell, United States (by season)

Solar Energy Potential in Caldwell, New Jersey

Caldwell, New Jersey, United States offers moderate potential for solar energy generation throughout the year, with significant seasonal variations. Located in the Northern Temperate Zone, this location experiences distinct seasonal patterns in solar energy production. The solar output in Caldwell follows a predictable annual cycle. During summer months, solar panels can generate approximately 6.03 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season, yielding about 5.43 kWh daily per kilowatt installed. Production drops considerably in autumn to 3.48 kWh/day, and reaches its lowest point in winter with just 2.12 kWh/day per kilowatt installed.

Seasonal Considerations

The substantial difference between summer and winter production (nearly a 3:1 ratio) indicates that Caldwell residents should expect significant seasonal fluctuations in their solar energy generation. The most favorable period for solar production spans from late spring through early fall, with peak performance occurring during the summer months. For a fixed panel installation at this location, the ideal angle to tilt panels to maximise total year-round production from solar PV is 35 degrees South. This optimal tilt helps balance seasonal variations and maximize annual energy harvest.

Environmental and Weather Factors

Several environmental factors in Caldwell may affect solar energy production:
  • Snow accumulation during winter months can temporarily cover panels, reducing energy production until the snow melts or is removed.
  • Tree coverage is significant in many parts of New Jersey, potentially creating shading issues that reduce solar efficiency.
  • The region experiences occasional severe weather, including thunderstorms and nor'easters, which may temporarily reduce solar output.

Preventative Measures

To maximize solar production in Caldwell despite these challenges:
  • Install panels at the recommended 35-degree tilt to facilitate snow shedding while maintaining optimal year-round production.
  • Consider a site assessment to identify and address potential shading issues from trees or nearby structures.
  • Use quality inverters and micro-inverters that can optimize production even when some panels are partially shaded.
  • Implement a regular cleaning schedule, particularly after snowstorms, to ensure panels remain unobstructed.
  • Consider slightly oversizing the system to compensate for the lower winter production if year-round energy independence is desired.
While Caldwell isn't among the absolute best locations for solar in the United States, it still offers sufficient solar resources to make photovoltaic systems economically viable, especially during the productive spring and summer months.

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 Caldwell

Seasonal solar PV output for Latitude: 40.852, Longitude: -74.2842 (Caldwell, 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:

Summer
Average 6.03kWh/day in Summer.
Autumn
Average 3.48kWh/day in Autumn.
Winter
Average 2.12kWh/day in Winter.
Spring
Average 5.43kWh/day in Spring.

 

Ideally tilt fixed solar panels 35° South in Caldwell, United States

To maximize your solar PV system's energy output in Caldwell, United States (Lat/Long 40.852, -74.2842) throughout the year, you should tilt your panels at an angle of 35° 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.

The sun
At Latitude: 40.852, Longitude: -74.2842, the ideal angle to tilt panels is 35° South

Seasonally adjusted solar panel tilt angles for Caldwell, 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 Caldwell, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 35° 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 45° South in Autumn 56° South in Winter 34° South in Spring

Assuming you can modify the tilt angle of your solar PV panels throughout the year, you can optimize your solar generation in Caldwell, United States as follows: In Summer, set the angle of your panels to 24° facing South. In Autumn, tilt panels to 45° facing South for maximum generation. During Winter, adjust your solar panels to a 56° angle towards the South for optimal energy production. Lastly, in Spring, position your panels at a 34° angle facing South to capture the most solar energy in Caldwell, United States.

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 Caldwell, 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 Caldwell, 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.






Please enter information above to calculate panel spacing.

Topography for solar PV around Caldwell, United States

Caldwell, located in Essex County, New Jersey, sits in a region characterized by gently rolling hills and shallow valleys that form part of the larger Piedmont physiographic province. The area around Caldwell presents a varied topography that transitions from the relatively flat lands of the Passaic River basin to the east toward the more elevated terrain of the Watchung Mountains to the west. The immediate vicinity of Caldwell features modest elevations, with the land generally sloping from west to east. The western portions of the area rise to form part of the First Watchung Mountain, a ridge of volcanic origin that runs southwest to northeast through northern New Jersey. This ridge, while not particularly high by mountain standards, creates distinctive topographical features that influence local drainage patterns and land use.

Topographical Features

The landscape around Caldwell includes several small streams and watercourses that flow eastward toward the Passaic River system. These waterways have carved shallow valleys through the softer sedimentary rocks that underlie much of the area. Between these valleys, the land rises to form low hills and ridges, creating a patchwork of elevated and low-lying areas. To the northwest of Caldwell, the terrain becomes more pronounced as it approaches the Highlands region, with greater variations in elevation and more rugged features. Conversely, to the southeast, the land gradually flattens as it approaches the Newark Basin and eventually the coastal plain. The urban development in and around Caldwell has modified the natural topography to some extent, with grading for residential areas and commercial centers having smoothed some of the more subtle topographical variations. However, the underlying structure of the land remains evident in the overall pattern of development.

Solar PV Potential Areas

When considering areas near Caldwell that might be suitable for large-scale solar photovoltaic installations, several factors related to topography come into play. The most favorable locations would generally be: South-facing slopes provide optimal exposure to the sun's path throughout the day. The gentle hills to the north and northeast of Caldwell offer some potentially suitable south-facing aspects that would receive consistent sunlight. Open areas with minimal shading from topographical features would be preferable. The more level terrain to the east and southeast of Caldwell, as it transitions toward the Passaic River basin, provides larger open spaces that might accommodate solar arrays without significant topographical obstacles. Areas that are already disturbed or developed, such as former industrial sites or large commercial properties, might offer opportunities for solar development without additional environmental impact. The region has several brownfield sites in neighboring communities like Montclair and Verona that could be repurposed for solar energy production. The challenges for large-scale solar development in this region relate primarily to the relatively dense suburban development pattern and the fragmented nature of the available open space. The western areas, while offering favorable south-facing slopes in some locations, also include more wooded terrain which would require clearing—an environmental trade-off that would need careful consideration. The most promising areas might be found along the eastern edge of the Watchung Mountains, where south-facing slopes meet more open terrain, and in the broader, flatter areas to the east where larger parcels might be available. However, these areas would need to be evaluated on a case-by-case basis, considering not just topography but also current land use, ecological value, and proximity to electrical infrastructure.

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!

Citation Guide

Article Details for Citation

Article: Solar PV Analysis of Caldwell, United States
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 22nd of May 2025
Last Updated: Monday 1st of December 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.

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