Kerman, Iran, located at 30.2811, 57.0859 in the Northern Sub Tropics, offers considerable potential for solar PV energy generation throughout the year, though with notable seasonal variations.

Seasonal Solar Production

Solar panels in Kerman generate their highest electricity output during summer months, producing an impressive 8.52kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 7.11kWh/day, while autumn yields 5.95kWh/day. Winter shows the lowest production at 4.49kWh/day per kW installed, though this is still relatively good compared to many global locations.

The substantial difference between summer and winter production (nearly double) indicates strong seasonal variation, which is typical for subtropical regions where the sun's path changes significantly throughout the year.

Optimal Installation

For fixed solar panel installations in Kerman, the ideal tilt angle to maximize year-round energy production is 27 degrees facing South. This angle has been calculated by analyzing the sun's position throughout the year and weighting the optimal daily angles according to the location's solar potential.

Environmental Challenges

Kerman faces several environmental factors that could potentially impact solar production:

• Dust and sand accumulation: Located in an arid region, Kerman experiences dust storms that can significantly reduce panel efficiency by blocking sunlight.
• High temperatures: Summer temperatures in Kerman can exceed 40°C (104°F), which can reduce solar panel efficiency as photovoltaic cells typically lose efficiency above 25°C.
• Occasional water scarcity: This can make panel cleaning challenging in an area where dust accumulation is common.

Preventative Measures

To maximize solar production in Kerman's environment, several preventative measures are recommended:

• Regular cleaning schedule: Implementing automated or manual cleaning systems to remove dust accumulation, ideally every 2-4 weeks depending on local conditions.
• Elevated mounting: Installing panels with sufficient ground clearance to minimize dust accumulation and allow for better air circulation.
• Temperature-resistant panels: Selecting solar panels with lower temperature coefficients that perform better in hot conditions.
• Water-efficient cleaning solutions: Using dry cleaning methods or water-efficient technologies in this water-scarce region.
• Anti-soiling coatings: Applying specialized coatings to panels that reduce dust adhesion and make cleaning more effective.

Despite these challenges, Kerman's abundant sunshine throughout the year makes it an excellent location for solar energy production, especially if proper installation techniques and maintenance protocols are followed.

Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° 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 Kerman

Seasonal solar PV output for Latitude: 30.2811, Longitude: 57.0859 (Kerman, 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 27° South in Kerman, Iran

To maximize your solar PV system's energy output in Kerman, Iran (Lat/Long 30.2811, 57.0859) throughout the year, you should tilt your panels at an angle of 27° 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 Kerman, 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 Kerman, Iran. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 27° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
14° South in Summer	35° South in Autumn	45° South in Winter	23° 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 Kerman, 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 Kerman, 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 Kerman, Iran

The topography surrounding Kerman, Iran, presents a striking mosaic of geological features typical of central Iran's arid regions. Located at an elevation of approximately 1,755 meters (5,758 feet) above sea level, Kerman sits within a broad valley surrounded by mountain ranges. The city itself occupies a relatively flat plain, but the surrounding landscape quickly transitions into more varied terrain. To the north and northeast of Kerman rise the southern extensions of the Central Iranian mountain ranges, creating a rugged backdrop with numerous peaks and ridges. These mountains feature dry, rocky slopes with sparse vegetation adapted to the semi-arid climate. The southern horizon is dominated by the impressive Jebal Barez mountains, which form part of the larger Zagros mountain chain that runs through much of western and southern Iran.

Basin and Valley Systems

Kerman is situated in what geologists refer to as the Kerman-Tabas basin, a depression between mountain ranges that characterizes much of central Iran's topography. This basin contains numerous smaller valleys and plains, many of which feature flat, expansive surfaces with minimal vegetation cover. The basin floor consists primarily of alluvial deposits, creating relatively smooth terrain interrupted occasionally by isolated hills and rock outcroppings. The landscape exhibits classic features of a desert environment, including dry riverbeds (wadis) that fill briefly during rare precipitation events, salt flats in the lowest portions of closed basins, and areas of wind-deposited sand. The region also contains several playas – dry lake beds that occasionally hold shallow water after rainfall but remain dry most of the year.

Solar PV Potential Areas

Several areas near Kerman offer exceptional potential for large-scale solar photovoltaic installations due to their topographical and geographical characteristics. The most promising zones include: The flat plains extending south and southeast of Kerman present ideal conditions for solar development. These areas feature minimal slope, limited vegetation requiring clearance, and good accessibility from existing road networks. The vast expanses of undeveloped land provide ample space for large installations without significant grading requirements. The gently sloping alluvial fans that extend from the mountain bases toward the basin centers also offer promising sites. These areas typically have good drainage, stable ground conditions, and favorable sun exposure throughout the day. Their slight inclination can even be advantageous for panel orientation in some design configurations. The elevated plateaus northeast of the city combine flat topography with slightly cooler temperatures compared to the basin floor, potentially improving photovoltaic efficiency. These higher-elevation sites experience less dust accumulation than lower valley locations, which can reduce maintenance requirements and improve panel performance.

Topographical Challenges

Despite the generally favorable conditions, certain topographical features present challenges for solar development. The mountainous areas, while receiving excellent solar radiation, have steep slopes that complicate construction and increase development costs. These areas also experience more significant shadowing effects during parts of the day. The lowest portions of the basin occasionally contain seasonal wetlands or salt flats with poor soil stability, making them less suitable for permanent structures. Additionally, some valley areas experience dust storms and sand movement that could affect solar panel efficiency and longevity without proper protective measures. The region's numerous dry watercourses, while appearing benign during dry periods, can experience flash flooding during infrequent but intense rainfall events. Solar developments would need to incorporate appropriate drainage systems and avoid placement in these natural drainage channels. In conclusion, the topography around Kerman offers numerous promising sites for large-scale solar PV development, particularly on the extensive flat plains and gently sloping surfaces that characterize much of the basin landscape. The combination of favorable terrain, minimal vegetation, and excellent solar exposure creates nearly ideal conditions for solar energy production, though careful site selection remains essential to address the specific challenges presented by this arid mountain-basin environment.

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.