Kota Bharu, Kelantan, Malaysia presents a generally favorable location for year-round solar PV energy generation, benefiting from its tropical position where consistent sunlight is available throughout most of the year rather than experiencing traditional seasonal variations.

Solar Energy Output Performance

The solar energy production at this location shows promising year-round potential, with notable seasonal variations. Spring emerges as the most productive season, generating 6.51kWh per day per kW of installed solar capacity. Summer follows as the second-best performing season at 5.85kWh/day per kW, while winter maintains solid production at 5.36kWh/day per kW. Autumn shows the lowest output at 5.04kWh/day per kW, though this still represents reasonable energy generation. For optimal performance with fixed solar panel installations at Kota Bharu, Kelantan, panels should be tilted at 5 degrees South to maximize total year-round production. This relatively shallow angle reflects the location's proximity to the equator and helps capture the most solar energy across all seasons.

Environmental and Weather Challenges

Several significant environmental factors can impede solar production in Kota Bharu's tropical climate. The region experiences high humidity levels throughout the year, which can reduce solar panel efficiency and create conditions for accelerated degradation of electrical components. Heavy monsoon rains during wet seasons pose multiple challenges. While rain can help clean panels naturally, intense downpours may cause temporary shading and reduce energy output. The high moisture content in the air can also lead to corrosion of mounting hardware and electrical connections if not properly protected. Dust and debris accumulation represents another concern, particularly during drier periods. Tropical vegetation growth can be rapid, potentially creating shading issues if trees or plants are allowed to grow too close to solar installations.

Preventative Installation Measures

To maximize energy production despite these challenges, several preventative measures should be implemented during solar installation:

• Use marine-grade or tropical-rated electrical components and wiring designed to withstand high humidity and salt air exposure
• Install proper drainage systems around panel mounting areas to prevent water pooling
• Apply anti-corrosion treatments to all metal mounting hardware and use stainless steel or aluminum components where possible
• Ensure adequate ventilation behind panels to reduce heat buildup and improve efficiency
• Implement regular cleaning schedules to remove dust, debris, and organic matter from panel surfaces

Proper vegetation management around the installation site is essential, including regular trimming of nearby trees and bushes to prevent shading. Installing panels at appropriate heights and distances from potential growth areas helps minimize future maintenance requirements. The consistent solar resource availability in Kota Bharu makes it a viable location for solar energy generation, provided that proper tropical climate considerations are incorporated into the system design and maintenance planning.

Note: The Tropics are located between 23.5° North and -23.5° South of the equator.

So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 77 locations across Malaysia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Malaysia by location

Solar output per kW of installed solar PV by season in Kota Bharu

Seasonal solar PV output for Latitude: 6.1156, Longitude: 102.2492 (Kota Bharu, Malaysia), 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 5° South in Kota Bharu, Malaysia

To maximize your solar PV system's energy output in Kota Bharu, Malaysia (Lat/Long 6.1156, 102.2492) throughout the year, you should tilt your panels at an angle of 5° 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 Kota Bharu, Malaysia

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 Kota Bharu, Malaysia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 5° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
10° North in Summer	11° South in Autumn	21° South in Winter	0° 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 Kota Bharu, Malaysia

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 Kota Bharu, Malaysia.

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 Kota Bharu, Malaysia

Topographical Features of Kota Bharu Region

Kota Bharu sits in the northeastern corner of Peninsular Malaysia, positioned on relatively flat coastal plains that characterize much of Kelantan state. The city lies near the confluence of the Kelantan River and sits just a few kilometers inland from the South China Sea coastline. The surrounding landscape is predominantly low-lying, with elevations typically ranging from sea level to around 50 meters above sea level across the immediate vicinity. The terrain around Kota Bharu consists mainly of alluvial plains formed by centuries of river deposits from the Kelantan River system. These fertile flatlands extend westward and southward from the city, creating an expansive area of gentle, rolling countryside. The topography becomes slightly more undulating as one moves further inland, but remains relatively modest in elevation changes. To the west and southwest of Kota Bharu, the landscape transitions into broader agricultural plains that stretch toward the interior of Kelantan state. These areas maintain their flat to gently rolling character for considerable distances, only beginning to encounter more significant elevation changes when approaching the foothills of the Titiwangsa Range much further inland. The coastal areas to the north and east feature typical tropical lowland characteristics, with some areas of reclaimed land and natural wetlands. The Kelantan River creates a natural boundary and influences the local microtopography through its meandering course and associated floodplains.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for large-scale solar photovoltaic installations around Kota Bharu would be the extensive flat to gently rolling plains that extend westward and southward from the city. These areas offer several key advantages for solar development, including minimal grading requirements, reduced construction costs, and optimal panel positioning opportunities. The agricultural plains southwest of Kota Bharu present particularly attractive conditions for solar farms. The consistent elevation and gentle terrain minimize the need for extensive site preparation, while the open landscape provides excellent solar access without significant shading concerns from topographical features. These inland areas also tend to have lower population densities compared to the immediate coastal zone, potentially reducing land acquisition complexities. Areas located approximately 10 to 30 kilometers southwest and west of Kota Bharu offer an ideal combination of flat terrain, good accessibility via existing road networks, and sufficient distance from dense urban development. The consistent topography in these regions allows for efficient panel layout designs and simplified maintenance access across large installations. The floodplains and immediate coastal areas near Kota Bharu would be less suitable for large-scale solar development due to potential flooding risks and higher humidity levels that could affect equipment performance. Additionally, the more densely populated coastal corridor presents greater land use competition and potential zoning restrictions that could complicate large-scale solar projects.

Malaysia solar PV Stats as a country

Malaysia ranks 33rd in the world for cumulative solar PV capacity, with 1,787 total MW's of solar PV installed. This means that 2.40% of Malaysia's total energy as a country comes from solar PV (that's 32nd in the world). Each year Malaysia is generating 55 Watts from solar PV per capita (Malaysia ranks 51st in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Malaysia?

Yes, there are several incentives for businesses wanting to install solar energy in Malaysia. The Malaysian government offers a range of financial incentives and tax breaks for businesses that invest in renewable energy projects. These include the Renewable Energy Fund (REF), which provides grants and loans to support the development of renewable energy projects; the Green Technology Financing Scheme (GTFS), which provides financing for green technology investments; and the Feed-in Tariff (FiT) scheme, which guarantees a fixed price for electricity generated from renewable sources. Additionally, businesses may be eligible for capital allowances on their investments in solar energy systems.

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