Clackamas, Oregon, located in the United States, presents a varied landscape for solar energy generation throughout the year. Situated in the Northern Temperate Zone at latitude 45.4122 and longitude -122.5545, this location experiences significant seasonal fluctuations in solar energy potential.

Seasonal Solar Performance

Summer stands out as the most productive season for solar energy in Clackamas, with an impressive daily output of 7.15 kWh per kW of installed solar capacity. Spring follows as the second-most productive season, generating 5.52 kWh per day. Autumn sees a considerable drop in production, yielding 2.96 kWh daily, while winter experiences the lowest output at 1.42 kWh per day.

These figures highlight the substantial variation in solar energy generation across seasons, with summer producing more than five times the energy of winter. This pattern suggests that solar installations in Clackamas will be most effective from late spring through early fall, with peak performance during the summer months.

Optimal Panel Installation

To maximize year-round solar energy production in Clackamas, fixed solar panels should be installed at a tilt angle of 37 degrees facing south. This angle has been calculated to optimize the capture of available sunlight throughout the year, taking into account the location's latitude and seasonal sun positions.

Environmental Considerations

While Clackamas offers good potential for solar energy, there are some environmental factors that could impact solar production:

1. Cloud cover: The Pacific Northwest, including Clackamas, is known for its cloudy weather, particularly during fall and winter months. This can significantly reduce solar output during these seasons.
2. Rain: Frequent rainfall, especially in winter, can further decrease solar panel efficiency by reducing direct sunlight exposure.

To mitigate these challenges, consider the following preventative measures:

• Use high-efficiency solar panels that perform well in low-light conditions
• Install a solar panel cleaning system to remove dust and debris, enhancing performance
• Implement a robust waterproofing system to protect against rain damage
• Consider adding a solar tracking system to maximize energy capture, especially during low-light periods

By addressing these environmental factors and optimizing panel installation, solar energy systems in Clackamas can still provide significant benefits, particularly during the more 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 Clackamas

Seasonal solar PV output for Latitude: 45.4122, Longitude: -122.5545 (Clackamas, 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 Clackamas, United States

To maximize your solar PV system's energy output in Clackamas, United States (Lat/Long 45.4122, -122.5545) 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 Clackamas, 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 Clackamas, 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
29° South in Summer	48° South in Autumn	60° South in Winter	38° 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 Clackamas, 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 Clackamas, 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 Clackamas, United States

The area around Clackamas, Oregon, located at 45.4122°N and 122.5545°W, features a diverse topography characteristic of the Pacific Northwest. Situated in the Willamette Valley, Clackamas is surrounded by a mix of gently rolling hills, flat plains, and more rugged terrain as you move towards the nearby Cascade Range to the east. The immediate vicinity of Clackamas is relatively flat, with some low hills and shallow valleys. This area was shaped by ancient glacial and fluvial processes, resulting in fertile soil and a landscape that gradually rises from the Willamette River to the east. As you move further east from Clackamas, the terrain becomes more varied and elevated, transitioning into the foothills of the Cascade Mountains. To the west of Clackamas, the land remains fairly level as it stretches towards Portland and the confluence of the Willamette and Columbia Rivers. This flatter terrain is punctuated by occasional buttes and small hills, providing some topographic relief to the otherwise even landscape.

Potential Areas for Large-Scale Solar PV

When considering areas near Clackamas that might be suitable for large-scale solar photovoltaic (PV) installations, several factors come into play. The ideal locations would have ample sunlight exposure, relatively flat terrain, and be away from densely populated areas or ecologically sensitive zones. The flatlands to the west and southwest of Clackamas offer promising potential for solar PV development. These areas, which include parts of rural Clackamas County and northern Marion County, feature expansive agricultural lands and open spaces that could accommodate large solar arrays without significant topographic obstacles. Another area of interest might be the gentler slopes of the foothills to the southeast of Clackamas. While more undulating than the valley floor, these areas still receive good sun exposure and could potentially host solar installations on south-facing slopes. It's important to note that while these areas may be topographically suitable, other factors such as land use regulations, grid connectivity, and environmental considerations would need to be thoroughly assessed before any large-scale solar PV project could be implemented. Additionally, the region's climate, characterized by cloudy and rainy winters, may impact the overall efficiency of solar power generation compared to sunnier parts of the country.

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.