Solar Energy Potential in Rathdrum, Idaho

Rathdrum, Idaho, located in the Northern Temperate Zone, presents a mixed picture for solar energy generation throughout the year. The location's potential for solar PV production varies significantly across seasons, with summer offering the most promising conditions and winter presenting challenges. During the summer months, Rathdrum experiences peak solar energy production, with an average of 7.36 kWh per day for each kilowatt of installed solar capacity. This high output makes summer an ideal time for solar energy generation in the area. Spring follows as the second-most productive season, yielding an average of 5.74 kWh per day. However, the potential for solar energy generation drops considerably during autumn and winter. Autumn sees a significant decrease to 3.01 kWh per day, while winter production plummets to a mere 1.27 kWh per day. This stark seasonal variation highlights the importance of planning for supplementary energy sources during the colder months.

Optimizing Solar Panel Installation

To maximize year-round solar energy production in Rathdrum, it's crucial to install fixed solar panels at the optimal angle. For this location, the ideal tilt angle is 40 degrees facing south. This angle is calculated to capture the most sunlight throughout the year, taking into account the Earth's elliptical orbit and the location's latitude.

Environmental and Weather Considerations

Several environmental and weather factors in Rathdrum can impact solar energy production: 1. Snowfall: The region experiences significant snowfall in winter, which can cover solar panels and reduce efficiency. Regular panel cleaning and the use of snow-shedding systems can help mitigate this issue. 2. Cloud cover: Rathdrum has a considerable number of cloudy days, particularly in winter, which can reduce solar output. Using high-efficiency panels and microinverters can help maximize energy production even in low-light conditions. 3. Temperature extremes: While cold temperatures can actually improve solar panel efficiency, extreme cold can potentially damage equipment. Choosing cold-resistant solar technology and proper insulation for inverters and batteries is essential. 4. Forest fires: The area is prone to summer forest fires, which can create smoke and reduce solar radiation reaching the panels. Regular cleaning and maintaining a clear area around the installation can help minimize the impact of ash and debris. By considering these factors and implementing appropriate preventative measures, solar energy systems in Rathdrum can be optimized for greater energy production throughout the year, despite the seasonal challenges.

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 Rathdrum

Seasonal solar PV output for Latitude: 47.8212, Longitude: -116.9085 (Rathdrum, 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 Rathdrum, United States

To maximize your solar PV system's energy output in Rathdrum, United States (Lat/Long 47.8212, -116.9085) 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 Rathdrum, 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 Rathdrum, 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
31° South in Summer	50° South in Autumn	62° 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 Rathdrum, 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 Rathdrum, 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 Rathdrum, United States

The topography around Rathdrum, Idaho, in the United States is characterized by a diverse landscape that combines rolling hills, flat valleys, and nearby mountainous terrain. Situated in the northern part of Idaho's panhandle, Rathdrum sits in a relatively flat area known as the Rathdrum Prairie. This prairie is part of a larger geological feature called the Rathdrum Prairie-Spokane Valley Aquifer, which is a vast underground water system. To the east and northeast of Rathdrum, the terrain becomes more rugged as it transitions into the foothills of the Coeur d'Alene Mountains, part of the larger Bitterroot Range. These mountains rise steeply, creating a dramatic backdrop to the prairie landscape. The western edge of the prairie is bounded by the Spokane River, which flows northward before turning west towards Washington state. South of Rathdrum, the landscape gradually rises towards the Coeur d'Alene National Forest, offering a mix of forested hills and small valleys. To the north, the terrain remains relatively flat as it extends towards the Pend Oreille River and Lake Pend Oreille, one of the largest and deepest natural lakes in the western United States.

Suitability for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar photovoltaic (PV) installations, the Rathdrum Prairie offers the most promising potential. The relatively flat terrain of the prairie provides ideal conditions for solar panel arrays, as it minimizes the need for extensive land grading and maximizes exposure to sunlight throughout the day. The open nature of the prairie also means there are fewer obstacles, such as tall trees or buildings, that could cast shadows on solar panels and reduce their efficiency. Additionally, the prairie's elevation and distance from major water bodies reduce the likelihood of fog or mist that could impact solar energy production. However, it's important to note that while the topography is suitable, other factors such as local zoning laws, land ownership, and proximity to existing power infrastructure would also play crucial roles in determining the feasibility of large-scale solar PV projects in the area. Furthermore, developers would need to consider the region's climate, including snowfall in winter months, which could temporarily reduce solar panel efficiency. Areas to the south of Rathdrum, where the land begins to rise, might also offer good potential for solar PV installations. These slightly elevated areas could provide excellent sun exposure, though the increasing presence of trees and more varied terrain might limit the size of potential installations compared to the prairie. In contrast, the mountainous areas to the east and forested regions to the south would be less suitable for large-scale solar PV due to their rugged terrain, forest cover, and potential for shading from nearby peaks.

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.