Solar Energy Potential in Sedro-Woolley, Washington

Sedro-Woolley, Washington in the United States offers varying potential for solar energy generation throughout the year. Located in the Northern Temperate Zone, this location experiences significant seasonal fluctuations in solar production that prospective solar adopters should understand. The solar energy output at this location follows a predictable seasonal pattern. During summer months, solar panels perform at their peak, generating approximately 7.11kWh per day for each kilowatt of installed capacity. Spring also offers good generation potential with 5.24kWh/day per installed kilowatt. However, production drops substantially during autumn to 2.36kWh/day and reaches its lowest point in winter with just 1.29kWh/day per kilowatt of installed capacity. This creates a nearly 5.5-fold difference between the best and worst seasons for solar generation. For fixed solar panel installations in Sedro-Woolley, the ideal tilt angle is 40 degrees facing South. This specific angle maximizes year-round energy production by optimizing the capture of available sunlight across all seasons.

Environmental and Weather Considerations

Several significant factors can impact solar production in Sedro-Woolley:

• Frequent cloud cover and precipitation in the Pacific Northwest, particularly during fall and winter months
• Potential snow accumulation on panels during winter
• Possible ash or smoke from seasonal wildfires reducing solar irradiance
• Shorter daylight hours during winter months

To mitigate these challenges, solar installations in Sedro-Woolley should incorporate several preventative measures: Installing panels at the recommended 40-degree tilt helps shed snow more effectively than flatter installations. Adding snow guards or implementing a snow removal plan can further prevent extended production losses. Selecting higher-efficiency panels that perform better in low-light conditions can help maximize output during cloudy periods. Additionally, micro-inverters or power optimizers can reduce the impact when portions of the array are shaded. Regular cleaning maintenance becomes important in this region, especially after wildfire season when ash deposits might accumulate on panels. Automated cleaning systems or scheduled maintenance can help maintain optimal performance. Despite these challenges, the strong summer and spring production can still make solar viable, especially when paired with net metering to balance the seasonal variations in generation.

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 Sedro-Woolley

Seasonal solar PV output for Latitude: 48.5274, Longitude: -122.2329 (Sedro-Woolley, 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 40° South in Sedro-Woolley, United States

To maximize your solar PV system's energy output in Sedro-Woolley, United States (Lat/Long 48.5274, -122.2329) throughout the year, you should tilt your panels at an angle of 40° 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 Sedro-Woolley, 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 Sedro-Woolley, United States. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 40° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
32° South in Summer	51° South in Autumn	63° South in Winter	40° 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 Sedro-Woolley, 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 Sedro-Woolley, 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 Sedro-Woolley, United States

Topography of Sedro-Woolley and Surrounding Areas

Sedro-Woolley is nestled in the northwestern region of Washington State, specifically in Skagit County. The topography of this area is characterized by a diverse landscape that transitions from the fertile Skagit River Valley to the foothills of the Cascade Mountains. The city itself sits at an elevation of approximately 56 feet (17 meters) above sea level. To the west of Sedro-Woolley lies the broad, flat Skagit Valley, which gradually slopes toward Puget Sound. This valley consists primarily of alluvial deposits from the Skagit River, creating rich agricultural lands. The valley floor is generally flat to gently rolling, with minimal elevation changes throughout. Moving eastward from Sedro-Woolley, the landscape begins to rise more dramatically into the western foothills of the Cascade Range. These foothills feature increasingly steep terrain with numerous small valleys, ridges, and streams. The elevation increases substantially as one moves east, eventually leading to the more mountainous terrain of the North Cascades. To the north and south of Sedro-Woolley, the topography consists of a mixture of rolling hills, river terraces, and small plateaus. Several tributaries of the Skagit River create minor valleys throughout the region, adding to the topographical complexity.

Solar PV Suitability in the Region

When considering areas near Sedro-Woolley for large-scale solar photovoltaic (PV) installations, several factors related to topography come into play. The most suitable locations would generally be found in the Skagit Valley to the west of Sedro-Woolley, where the land is relatively flat, open, and receives less precipitation than the mountainous areas to the east. The valley floor offers several advantages for solar PV development. The flat terrain minimizes the need for extensive grading and site preparation, reducing installation costs. Additionally, these areas have fewer tall trees and natural obstacles that might cast shadows on solar arrays. Some of the most promising locations include: The agricultural lands west and southwest of Sedro-Woolley offer extensive flat areas with good solar exposure. These areas, while valuable for agriculture, contain parcels that might be suitable for dual-use solar installations that allow for continued agricultural activity beneath and around solar arrays. The slightly elevated terraces and plateaus that border the valley floor provide good drainage and reduced flood risk compared to the lowest parts of the valley. These areas often have southern exposures that maximize solar gain throughout the year. It's worth noting that the mountainous areas east of Sedro-Woolley present significant challenges for large-scale solar development. The steep terrain, dense forest cover, and increased cloud cover make these areas less suitable despite their higher elevation. Additionally, many of these eastern lands fall under various conservation designations or forestry management, further limiting development potential. The climate context is also important when considering solar development in this region. The area experiences a maritime climate influenced by the Pacific Ocean, with relatively mild temperatures year-round. However, the western portion of Skagit County typically receives less annual precipitation than the eastern mountainous regions, making the valley areas more favorable for solar energy production.

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

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.