Solar PV Analysis of Guaynabo, Puerto Rico
Guaynabo, Puerto Rico is a pretty good place for producing solar energy all year round. This is because it's located in the tropics, where sunlight is consistent throughout most of the year. The amount of electricity you can expect to get from each kilowatt of installed solar changes slightly with the seasons: it's highest in summer and spring (6.53 and 6.78 kilowatt-hours per day respectively), a bit lower in autumn (5.74 kWh/day), and lowest in winter (5.28 kWh/day).
But even during winter, Guaynabo still gets enough sun to make solar energy production worthwhile - especially if your panels are tilted at an angle of 17 degrees South, which has been found to be the best angle for catching the most sunlight over the course of a year.
However, there might be some local factors that could affect how much electricity you can generate from solar power here. For example, Guaynabo does have a wet season when rainfall is higher than usual - this could potentially reduce your system's output if it leads to more cloudy days or covers your panels with water droplets that block out some sunlight.
To help ensure greater energy production despite these potential challenges, there are several steps you can take when installing your solar system:
1) Choose panels with anti-reflective coating: This helps them absorb more light instead of reflecting it away.
2) Consider using tracking mounts: These move your panels so they're always facing directly towards the sun.
3) Regular cleaning and maintenance: Keep your panels clean especially during wet season as dirt or water droplets on them can block out sunlight.
4) Install a battery storage system: This allows you to store excess power produced during sunny periods for use during less sunny times or at night.
Remember though; every situation is unique so consider consulting with local experts before making any final decisions about installing solar power.
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 42 locations across Puerto Rico. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Puerto Rico by location
Solar output per kW of installed solar PV by season in Guaynabo
Seasonal solar PV output for Latitude: 18.3588, Longitude: -66.115 (Guaynabo, Puerto Rico), 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 17° South in Guaynabo, Puerto Rico
To maximize your solar PV system's energy output in Guaynabo, Puerto Rico (Lat/Long 18.3588, -66.115) throughout the year, you should tilt your panels at an angle of 17° 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 Guaynabo, Puerto Rico
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 Guaynabo, Puerto Rico. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 17° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 2° South in Summer | 24° South in Autumn | 34° South in Winter | 12° 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 Guaynabo, Puerto Rico
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 Guaynabo, Puerto Rico.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Guaynabo, Puerto Rico
Guaynabo, Puerto Rico is situated in the northern coastal plain region of the island. The area features a mix of flatlands and rolling hills with some steeper mountains to the south. It is part of a larger metropolitan area that includes San Juan, so there are significant urban and suburban developments.
The best areas for large-scale solar PV installations would likely be on flatter lands or gently sloping hills that receive ample sunlight throughout the year. Given Guaynabo's location in a densely populated metropolitan area, it might be more challenging to find large tracts of open land suitable for such installations within city limits.
However, there could be potential in nearby less-developed regions or repurposing underutilized lands like brownfields or abandoned industrial sites. Rooftop solar installations can also be an effective way to generate renewable energy in more urban settings without requiring additional land resources.
Additionally, Puerto Rico has numerous former sugarcane plantations which could potentially serve as locations for solar farms if they're not currently being used for other forms of agriculture or development.
It's important to note that any specific site selection would need careful analysis including factors like local weather patterns (especially given Puerto Rico's vulnerability to hurricanes), connection opportunities to electrical grid infrastructure, environmental impact considerations among others.
Puerto Rico solar PV Stats as a country
Puerto Rico ranks 48th in the world for cumulative solar PV capacity, with 491 total MW's of solar PV installed. Each year Puerto Rico is generating 154 Watts from solar PV per capita (Puerto Rico ranks 33rd in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Puerto Rico?
Yes, there are several incentives for businesses wanting to install solar energy in Puerto Rico. The Puerto Rico Energy Commission (PREC) offers a net metering program that allows businesses to receive credits on their electricity bills for the excess energy they generate from their solar systems. Additionally, businesses may be eligible for federal tax credits and accelerated depreciation benefits. The PREC also provides grants and loans to help offset the cost of installing solar systems.
Do you have more up to date information than this on incentives towards solar PV projects in Puerto Rico? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Sunday 19th of May 2024
Last Updated: Monday 21st of July 2025
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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.
