The location of Alvand, Qazvin Province, Iran, situated at coordinates 36.1875, 50.0649 in the Northern Temperate Zone, presents a mixed picture for solar PV energy generation throughout the year. While it offers good potential during certain seasons, there are significant variations that impact overall efficiency.

Seasonal Solar Output

Solar energy production in Alvand varies considerably across the seasons. Summer stands out as the most productive period, with an impressive daily output of 7.55 kWh per kW of installed solar capacity. Spring follows as the second-best season, generating 5.75 kWh/day. Autumn sees a noticeable decline to 4.30 kWh/day, while winter experiences the lowest output at 2.93 kWh/day.

These figures indicate that Alvand's solar potential is strongest from late spring through early autumn. During this period, longer days and more direct sunlight contribute to higher energy production. However, the substantial drop in winter output suggests that supplementary energy sources may be necessary during the colder months.

Optimal Panel Installation

To maximize year-round solar energy production in Alvand, Qazvin Province, fixed solar panels should be installed at a tilt angle of 31 degrees facing South. This angle has been calculated to optimize the panels' exposure to sunlight throughout the year, taking into account the Earth's orbit and the location's specific latitude.

Environmental and Weather Considerations

While Alvand's location is generally favorable for solar energy production, there are some environmental factors to consider:

1. Dust and sandstorms: Being in a semi-arid region, Alvand may experience dust storms that can reduce panel efficiency. Regular cleaning and maintenance of panels is crucial.
2. Temperature extremes: Hot summer days can slightly reduce panel efficiency, while cold winter nights may lead to frost formation. Using high-quality, temperature-resistant panels can mitigate these issues.

To address these challenges, installing panels with self-cleaning technologies, implementing regular maintenance schedules, and using panels designed for extreme temperature conditions can help ensure optimal energy production. Additionally, considering a tracking system instead of fixed panels could further increase energy yield, especially during the less productive winter 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 29 locations across Iran. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Iran by location

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

Seasonal solar PV output for Latitude: 36.1875, Longitude: 50.0649 (Alvand, Iran), 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 31° South in Alvand, Iran

To maximize your solar PV system's energy output in Alvand, Iran (Lat/Long 36.1875, 50.0649) throughout the year, you should tilt your panels at an angle of 31° 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 Alvand, Iran

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 Alvand, Iran. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 31° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
20° South in Summer	40° South in Autumn	51° South in Winter	28° 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 Alvand, Iran

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 Alvand, Iran.

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 Alvand, Iran

The topography around Alvand, Iran, located at coordinates 36.1875, 50.0649, is characterized by diverse and rugged terrain. This region is part of the Alborz mountain range, which stretches across northern Iran. The landscape is dominated by steep mountains, deep valleys, and rolling foothills. Alvand itself is situated at a relatively high elevation, surrounded by peaks that reach heights of over 3,000 meters (9,800 feet) above sea level. The area experiences significant changes in elevation over short distances, creating a complex and varied topography. Steep slopes and rocky outcrops are common features throughout the region. The mountainous terrain is intersected by numerous streams and rivers, which have carved out deep valleys and gorges over millions of years. These water bodies contribute to the area's rugged appearance and play a crucial role in shaping the local ecosystem.

Suitable Areas for Large-scale Solar PV

While the mountainous terrain around Alvand presents some challenges for large-scale solar photovoltaic (PV) installations, there are areas nearby that could be suitable for such projects. The most promising locations for solar PV development would be found in the lower elevation areas and valleys surrounding the mountains. To the south and southeast of Alvand, the terrain becomes less mountainous and more open, with gentler slopes and wider valleys. These areas would likely offer more suitable conditions for large-scale solar installations. The relatively flat or gently sloping land in these regions would provide easier access for construction and maintenance of solar panels. Additionally, the foothills and plateaus that extend from the base of the mountains could offer potential sites for solar PV projects. These areas typically receive ample sunlight and have less extreme topography compared to the higher mountain slopes. It's important to note that while topography is a crucial factor in determining suitable locations for solar PV installations, other considerations such as proximity to power infrastructure, local climate conditions, and environmental impact must also be taken into account when planning large-scale solar projects in this region.

Iran solar PV Stats as a country

Iran ranks 52nd in the world for cumulative solar PV capacity, with 456 total MW's of solar PV installed. This means that 0.40% of Iran's total energy as a country comes from solar PV (that's 40th in the world). Each year Iran is generating 5 Watts from solar PV per capita (Iran ranks 80th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Iran?

Yes, there are incentives for businesses wanting to install solar energy in Iran. The Iranian government has implemented a number of policies and programs to encourage the development of renewable energy sources, including solar energy. These include tax exemptions, subsidies, and other financial incentives such as low-interest loans. Additionally, the government has set up a Renewable Energy Organization (SUNA) which provides technical assistance and support for businesses interested in installing solar systems.

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