Seltjarnarnes, Capital Region, Iceland, situated at latitude 64.1498° N and longitude 22.0004° W, presents unique challenges and opportunities for solar PV energy generation. Located in the Northern Temperate Zone, this coastal town experiences significant seasonal variations in daylight hours and solar intensity.

Seasonal Solar Performance

The solar energy output at Seltjarnarnes varies dramatically throughout the year. Summer proves to be the most productive season, with an impressive 4.33 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind, generating 3.72 kWh/day/kW. However, autumn sees a significant drop to 1.00 kWh/day/kW, while winter production plummets to a mere 0.25 kWh/day/kW.

These figures highlight the extreme contrast between summer and winter solar potential in this northern location. The long days of the Icelandic summer, with nearly 24 hours of daylight around the solstice, contribute to the high summer output. Conversely, the brief, low-angle winter sun results in minimal production during the coldest months.

Optimal Panel Installation

To maximize year-round solar energy production in Seltjarnarnes, Capital Region, fixed solar panels should be tilted at a 53-degree angle facing south. This optimal angle helps capture the most sunlight throughout the year, considering the low sun angle during winter months and the higher sun position in summer.

Environmental and Weather Factors

Several environmental and weather factors can impact solar production in Seltjarnarnes:

• Snow and ice accumulation during winter months
• Frequent cloud cover and precipitation
• Salt spray from the nearby ocean

To mitigate these challenges, solar installations in Seltjarnarnes should incorporate several preventative measures. Panels should be installed with a steep enough angle to encourage snow and ice to slide off. Anti-reflective and hydrophobic coatings can help maintain panel efficiency in cloudy and wet conditions. Additionally, using corrosion-resistant materials and regular cleaning can protect against damage from salt spray.

Conclusion

While Seltjarnarnes offers excellent solar potential during summer and spring, the location's high latitude results in significantly reduced output during autumn and winter. This extreme seasonal variation makes it crucial to carefully plan solar installations and potentially combine them with other renewable energy sources or storage solutions to ensure year-round energy availability.

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 19 locations across Iceland. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Iceland by location

Solar output per kW of installed solar PV by season in Seltjarnarnes

Seasonal solar PV output for Latitude: 64.1498, Longitude: -22.0004 (Seltjarnarnes, Iceland), 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 53° South in Seltjarnarnes, Iceland

To maximize your solar PV system's energy output in Seltjarnarnes, Iceland (Lat/Long 64.1498, -22.0004) throughout the year, you should tilt your panels at an angle of 53° 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 Seltjarnarnes, Iceland

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 Seltjarnarnes, Iceland. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 53° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
47° South in Summer	66° South in Autumn	75° South in Winter	54° 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 Seltjarnarnes, Iceland

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 Seltjarnarnes, Iceland.

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 Seltjarnarnes, Iceland

Seltjarnarnes, located on the western edge of Reykjavik, Iceland, is characterized by a unique coastal topography. The area is a small peninsula jutting out into the North Atlantic Ocean, with relatively flat terrain and low-lying coastal plains. The landscape is dominated by rocky shorelines, interspersed with small beaches and tidal pools. The highest point on the peninsula is only about 30 meters above sea level, offering panoramic views of the surrounding ocean and distant mountains. The coastal areas of Seltjarnarnes feature rugged cliffs and rock formations, shaped by centuries of wind and wave erosion. These cliffs provide nesting sites for various seabirds, adding to the area's ecological importance. Moving inland, the terrain gradually transitions to grassy fields and low-lying vegetation typical of subarctic regions.

Nearby Areas Suitable for Large-Scale Solar PV

When considering areas near Seltjarnarnes for large-scale solar photovoltaic (PV) installations, it's important to note that Iceland's northern latitude presents challenges for solar energy production. However, some nearby locations may be more suitable than others. The flat, open areas to the east and southeast of Seltjarnarnes, extending into the outskirts of Reykjavik, could potentially accommodate large-scale solar PV installations. These areas offer relatively unobstructed exposure to sunlight, which is crucial for maximizing solar energy capture. The gently sloping terrain in these regions also provides opportunities for optimal panel positioning. Another potential area for solar PV development lies to the south of Seltjarnarnes, in the vicinity of Kópavogur and Garðabær. These suburban regions have expanses of open land that could be utilized for solar farms. The slightly higher elevation in some parts of these areas might offer improved solar exposure compared to the coastal lowlands. It's worth noting that while these areas may be topographically suitable, the feasibility of large-scale solar PV in Iceland is limited by the country's high latitude, which results in long periods of darkness during winter months. Additionally, Iceland's abundant geothermal and hydroelectric resources often make other renewable energy sources more practical. Any solar PV projects in this region would likely need to be part of a diversified energy strategy rather than a primary power source.

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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.