Solar Energy Potential in Porsgrunn, Telemark, Norway

Porsgrunn, Telemark, Norway, located at latitude 59.1393° N and longitude 9.6387° E, presents some challenges for year-round solar energy generation. Situated in the Northern Temperate Zone, this location experiences significant seasonal variations in daylight hours and solar intensity. The solar energy potential in Porsgrunn varies dramatically throughout the year. Summer months offer the most promising conditions, with an average daily output of 5.75 kWh per kW of installed solar capacity. Spring follows as the second-best season, producing 4.30 kWh/day. However, autumn and winter see a sharp decline in solar energy production, with 1.58 kWh/day and a mere 0.65 kWh/day, respectively.

Optimal Times for Solar Generation

The most ideal period for solar energy production in Porsgrunn is from late spring through early autumn. During these months, longer daylight hours and higher sun angles contribute to increased solar panel efficiency. However, the potential for energy generation drops significantly during the winter months due to shorter days and the sun's lower position in the sky.

Panel Installation Considerations

To maximize year-round solar energy production in Porsgrunn, Telemark, fixed solar panels should be installed at a tilt angle of 50 degrees facing south. This optimal angle helps capture more sunlight during the lower winter sun while still benefiting from the higher summer sun position.

Environmental and Weather Factors

Several factors can impede solar production in Porsgrunn: 1. Long, dark winters: The location's high latitude results in very short days during winter, severely limiting solar energy potential. 2. Cloud cover: Porsgrunn experiences significant cloud cover throughout the year, which can reduce solar panel efficiency. 3. Snow accumulation: Winter snowfall can cover panels, blocking sunlight and reducing energy production. To mitigate these challenges, consider the following preventative measures:

• Install snow guards or heating elements to prevent snow accumulation on panels.
• Use high-efficiency panels designed for low-light conditions to maximize energy production during cloudy periods.
• Implement a regular cleaning schedule to remove any debris or snow from the panels.
• Consider a dual-axis tracking system to follow the sun's path and maximize energy capture, especially during the limited daylight hours of winter.

While Porsgrunn's location presents challenges for year-round solar energy production, careful planning and appropriate technology can still make solar power a viable supplementary energy source, particularly during the 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 114 locations across Norway. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Norway by location

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

Seasonal solar PV output for Latitude: 59.1393, Longitude: 9.6387 (Porsgrunn, Norway), 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 50° South in Porsgrunn, Norway

To maximize your solar PV system's energy output in Porsgrunn, Norway (Lat/Long 59.1393, 9.6387) throughout the year, you should tilt your panels at an angle of 50° 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 Porsgrunn, Norway

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 Porsgrunn, Norway. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 50° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
43° South in Summer	61° South in Autumn	72° South in Winter	51° 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 Porsgrunn, Norway

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 Porsgrunn, Norway.

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 Porsgrunn, Norway

The topography around Porsgrunn, Norway, is characterized by a mix of coastal lowlands and gently rolling hills. The city itself is situated near the mouth of the Porsgrunn River, which flows into the Frierfjord, a branch of the larger Skagerrak strait. The immediate area around Porsgrunn is relatively flat, with some low-lying areas near the coast and river.

As you move inland and away from the city center, the terrain gradually becomes more varied. To the north and east, you'll find forested hills and small valleys, creating a more undulating landscape. These hills are not particularly high, typically ranging from 100 to 300 meters above sea level. The western side of Porsgrunn is dominated by the Frierfjord, with some rocky outcrops and small islands dotting the coastline.

When considering areas nearby that would be most suited for large-scale solar PV (photovoltaic) installations, there are a few factors to keep in mind. Ideally, solar farms require relatively flat or gently sloping land with good exposure to sunlight. Given these criteria, the following areas near Porsgrunn might be suitable:

1. The agricultural lands to the southeast of Porsgrunn, towards Skien, offer some potential. These areas are generally flatter and more open, which could provide good sun exposure for solar panels.

2. Some of the cleared areas on the hills to the north and east of Porsgrunn might also be suitable, particularly south-facing slopes that receive more direct sunlight throughout the day.

3. Former industrial sites or brownfield areas within Porsgrunn itself could be repurposed for solar installations, making use of already developed land.

However, it's important to note that Norway's high latitude means it receives less solar radiation compared to more southern countries, especially during the winter months. This factor, combined with the country's abundant hydroelectric resources, may impact the overall viability and competitiveness of large-scale solar PV projects in the region. Any potential solar development would need to carefully consider these geographical and economic factors.

Norway solar PV Stats as a country

Norway ranks 70th in the world for cumulative solar PV capacity, with 225 total MW's of solar PV installed. This means that 0.10% of Norway's total energy as a country comes from solar PV (that's 42nd in the world). Each year Norway is generating 42 Watts from solar PV per capita (Norway ranks 55th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Norway?

Yes, there are several incentives for businesses wanting to install solar energy in Norway. The Norwegian government offers a range of financial support and tax breaks for businesses that invest in renewable energy sources such as solar power. This includes grants, loans, and tax deductions. Additionally, the Norwegian Energy Agency provides funding for research and development projects related to renewable energy technologies. Finally, the Norwegian Power Company (Statkraft) offers discounted electricity rates for businesses that use solar power.

Do you have more up to date information than this on incentives towards solar PV projects in Norway? 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.