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Flag of United StatesSolar PV Analysis of West Orange, United States

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

West Orange, New Jersey is a moderately good location for solar energy generation, though it faces some typical challenges for the northeastern United States region in the Northern Temperate Zone.

Seasonal Solar Performance

The solar energy output at this location varies significantly throughout the year. Summer provides the strongest performance at 6.02 kWh per day per kW of installed solar capacity, making it the peak season for energy production. Spring follows as the second-best season with 5.44 kWh per day per kW, offering nearly comparable output to summer months. Autumn shows a notable decline to 3.48 kWh per day per kW, while winter presents the most challenging conditions with only 2.14 kWh per day per kW. This dramatic seasonal variation is typical for locations at this latitude, where winter sun angles are much lower and daylight periods are shorter. For optimal year-round energy production, solar panels should be installed at a fixed tilt angle of 35 degrees facing south. This angle maximizes the total annual energy output by balancing the varying sun angles throughout the seasons.

Environmental and Weather Challenges

Several factors in West Orange can impact solar energy production throughout the year:
  • Snow accumulation during winter months can completely block solar panels
  • Frequent cloud cover and overcast skies, particularly during autumn and winter
  • High humidity levels that can reduce solar irradiance
  • Potential for severe weather including thunderstorms, hail, and occasional hurricanes
  • Tree coverage and urban shading from buildings

Preventative Measures for Better Performance

Several installation strategies can help maximize solar production despite these challenges: Installing panels at the recommended 35-degree tilt naturally helps snow slide off more easily than flatter installations. Adding heating elements or snow guards can further prevent snow buildup during heavy winter storms. Proper panel spacing and mounting height reduces shading from nearby obstacles and improves air circulation around panels, which helps maintain efficiency during hot, humid summer conditions. Choosing high-quality panels with anti-reflective coatings and robust weather ratings ensures better performance during cloudy conditions and protects against severe weather damage. Regular cleaning and maintenance schedules help remove debris, pollen, and other substances that can reduce panel efficiency. Strategic placement away from large trees and buildings, combined with professional site analysis, helps minimize shading issues that could significantly impact energy production throughout the day and across seasons.

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 West Orange

Seasonal solar PV output for Latitude: 40.798, Longitude: -74.2416 (West Orange, 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 6.02kWh/day in Summer.
Autumn
Average 3.48kWh/day in Autumn.
Winter
Average 2.14kWh/day in Winter.
Spring
Average 5.44kWh/day in Spring.

 

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

To maximize your solar PV system's energy output in West Orange, United States (Lat/Long 40.798, -74.2416) 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: 40.798, Longitude: -74.2416, the ideal angle to tilt panels is 35° South

Seasonally adjusted solar panel tilt angles for West Orange, 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 West Orange, 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 West Orange, 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 West Orange, 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 West Orange, 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 West Orange, 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 West Orange, United States

Topography and Terrain Around West Orange

West Orange sits in the northeastern part of New Jersey, positioned within the foothills of the Watchung Mountains. The landscape is characterized by rolling hills and moderate elevation changes that create a varied topographical profile. The area lies approximately 15 miles west of Manhattan, where the relatively flat coastal plain begins to give way to more undulating terrain as it approaches the Appalachian foothills. The immediate vicinity around West Orange features elevations ranging from about 200 to 400 feet above sea level, with some higher peaks in the nearby Watchung Reservation reaching over 600 feet. The terrain consists of a mix of residential neighborhoods built on sloping hillsides, wooded areas, and pockets of flatter land that were historically used for agriculture or have been developed for commercial purposes. The underlying geology consists primarily of sedimentary rock formations, including sandstone and shale, which have been shaped by glacial activity during the last ice age. This has resulted in a landscape with gentle to moderate slopes interspersed with steeper ridgelines and occasional rocky outcroppings. Stream valleys cut through the terrain, creating natural drainage patterns that flow generally eastward toward the Atlantic Ocean.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations in the West Orange region would be the flatter areas to the east and southeast, where the terrain begins to transition toward the coastal plain. These areas offer several advantages including reduced grading costs, easier equipment access, and more uniform solar exposure without significant shading from adjacent hills or ridgelines. Former industrial sites and brownfields in nearby communities such as Newark, Irvington, and East Orange present excellent opportunities for solar development. These locations typically feature large, relatively flat parcels with existing electrical infrastructure and fewer environmental constraints compared to undeveloped natural areas. The slightly lower elevation of these eastern areas also means less topographical interference with solar panel positioning and maintenance access. Agricultural areas in the broader region, particularly those found in the flatter sections of Essex and Union counties, represent another category of potentially suitable sites. Many of these areas have open exposure with minimal tree cover and existing road access that could support large-scale solar installations. The terrain in these locations is typically well-drained and stable, reducing foundation and installation challenges. Areas to the west and northwest of West Orange, while scenic, present more challenges for large-scale solar development due to their steeper slopes, heavier forest cover, and the increased complexity of working on hillside terrain. The Watchung Mountains and similar elevated areas, while offering good southern exposure on properly oriented slopes, would require more extensive site preparation and could face greater regulatory scrutiny due to their natural and recreational value.

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 West Orange, United States
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 18th of July 2025
Last Updated: Thursday 7th of August 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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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.

Calculate Your Optimal Solar Panel Tilt Angle