Solar Energy Potential in Riobamba, Chimborazo Province, Ecuador

Riobamba, Chimborazo Province, Ecuador, located at latitude -1.6727 and longitude -78.6483, offers a generally favorable environment for solar PV energy generation throughout the year. Situated near the equator in the tropics, this location benefits from relatively consistent sunlight patterns across seasons, which are primarily distinguished by wet and dry periods rather than significant variations in daylight duration. The solar energy production potential in Riobamba demonstrates modest seasonal fluctuation. Spring stands out as the most productive period, generating approximately 4.65 kWh per day for each kilowatt of installed solar capacity. Summer follows with 4.16 kWh/day, while winter produces 4.09 kWh/day, and autumn yields the lowest output at 3.99 kWh/day per kilowatt installed.

Optimal Panel Installation

For fixed solar panel installations in Riobamba, Chimborazo Province, the ideal tilt angle to maximize year-round energy production is 2 degrees North. This slight northward orientation optimizes the panels' exposure to the sun's path throughout the year, accounting for Riobamba's position just south of the equator and the earth's elliptical orbit around the sun.

Environmental and Weather Considerations

Several environmental factors may impact solar energy production in Riobamba:

• Cloud cover during the rainy season (typically October to May) can significantly reduce solar radiation reaching panels
• Volcanic ash from nearby active volcanoes, including Tungurahua and Chimborazo, may occasionally settle on panels and reduce efficiency
• The high-altitude location (approximately 2,750 meters above sea level) means increased exposure to UV radiation, which can accelerate panel degradation over time
• Afternoon thunderstorms are common during certain months, temporarily reducing production

Recommended Preventative Measures

To maximize solar energy production despite these challenges, consider implementing these preventative measures:

• Install automated cleaning systems or establish regular manual cleaning protocols to remove volcanic ash and dust
• Select solar panels with high-quality UV-resistant materials suitable for high-altitude environments
• Implement a robust lightning protection system to safeguard the installation during thunderstorms
• Consider a slight overcapacity in system design to compensate for reduced production during the rainier months
• Use micro-inverters or power optimizers to minimize the impact of partial shading from cloud cover

Despite these considerations, Riobamba's consistent year-round solar radiation makes it a viable location for solar PV installations, with only modest seasonal variations in energy production and an annual average that remains relatively stable.

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

Link: Solar PV potential in Ecuador by location

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

Seasonal solar PV output for Latitude: -1.6727, Longitude: -78.6483 (Riobamba, Ecuador), 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 2° North in Riobamba, Ecuador

To maximize your solar PV system's energy output in Riobamba, Ecuador (Lat/Long -1.6727, -78.6483) throughout the year, you should tilt your panels at an angle of 2° North 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 Riobamba, Ecuador

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 Riobamba, Ecuador. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 2° North 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	8° North in Autumn	18° North in Winter	4° 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 Riobamba, Ecuador

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 Riobamba, Ecuador.

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 Riobamba, Ecuador

Riobamba is situated in the central highlands of Ecuador, nestled within the Andean mountain range. The city lies in a valley known as the Avenue of the Volcanoes, surrounded by impressive mountain peaks including the majestic Chimborazo, Ecuador's highest mountain at 6,263 meters above sea level. This dramatic topography creates a varied landscape characterized by high plateaus, deep valleys, and volcanic formations. The terrain around Riobamba consists primarily of high-altitude plains called "páramos," which typically sit at elevations between 2,500 and 4,500 meters. These páramos feature rolling grasslands interspersed with small lakes and wetlands. The city itself sits at approximately 2,750 meters above sea level on a relatively flat plateau, providing expansive views of the surrounding mountains.

Volcanic Influences on the Landscape

The region's topography has been significantly shaped by volcanic activity. Several volcanoes surround Riobamba, including not only Chimborazo but also Tungurahua, El Altar, and Carihuairazo. These volcanic formations have created diverse soil conditions and distinctive geographic features throughout the area. Ancient lava flows and ash deposits have contributed to the formation of fertile valleys in some areas, while creating rugged, rocky terrain in others. River systems further define the landscape, with the Chambo River flowing near Riobamba and eventually joining the Amazon watershed. These river valleys cut through the mountainous terrain, creating natural corridors and more accessible routes through the otherwise challenging topography.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic (PV) installations, several areas near Riobamba offer promising conditions. The high-altitude plains to the south and southwest of the city present particularly favorable conditions for solar energy development. These areas benefit from: Relatively flat terrain that minimizes installation costs and complexity Higher elevation which results in less atmospheric interference with solar radiation Lower population density, providing ample space for extensive arrays The páramo regions between Riobamba and Guamote, approximately 30 kilometers to the south, offer extensive flat to gently rolling terrain that would be well-suited for large solar installations. These areas have minimal shading from mountains and good solar exposure throughout most of the day. Another promising area lies in the broader valleys to the northeast of Riobamba, toward Penipe. While slightly lower in elevation, these areas still offer favorable conditions with relatively flat terrain and good solar exposure, particularly in the morning. The high plateaus near the communities of San Juan and Calpi, west of Riobamba, also present viable options for solar development. These areas benefit from their elevation and relatively consistent topography, though some sections may require more extensive site preparation due to subtle variations in the terrain. It's worth noting that while the mountainous areas themselves typically aren't suitable for large-scale installations due to their steep slopes and variable aspects, they can sometimes create favorable microclimates in adjacent valleys by blocking winds or reducing cloud formation in their rain shadows. The areas directly south of Chimborazo, despite their high elevation and good solar exposure, may be less suitable due to environmental protections associated with the Chimborazo Wildlife Reserve and cultural considerations related to indigenous communities that maintain traditional agricultural practices in these regions.

Citation Guide

Article Details for Citation

Tell Us About Your Work

We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.

Feeling generous?

Share this with your friends!

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.