Keratsini, Attica, Greece, located in the Northern Temperate Zone at latitude/longitude 37.9625, 23.6197 is a pretty good spot for generating solar energy year-round, but there are definitely some times of the year that are better than others.
In simple terms, how much electricity you can generate from solar power depends on how much sun your panels get each day. At this location in Keratsini, Attica, during the summer months you can expect to produce about 8.19 kilowatt-hours (kWh) of electricity per day for every kilowatt (kW) of solar panels installed. This drops to about 4.13 kWh/day in autumn and further down to around 2.88 kWh/day in winter before picking up again to around 6.39 kWh/day in spring.
So if you're looking at using solar power here, summer and spring would be your best bet for generating lots of energy while autumn and especially winter will give less output due to shorter daylight hours and possibly more cloud cover.
If you're setting up fixed panel installation here - that's where your solar panels don't move with the sun but stay at one angle all year round - then tilting them towards south at an angle of about 32 degrees would give you the most overall production across all seasons.
As far as local factors go that could affect your solar production; Keratsini being a port city might have higher levels of air pollution which can reduce sunlight reaching your panels so it'd be ideal if they were cleaned regularly to keep them working efficiently.
Also weather conditions like heavy snowfall or hail could damage panels or block sunlight so protective measures should be considered when installing them - like sturdy mounting structures and perhaps even protective covers if severe weather is expected.
Finally remember that trees or buildings casting shadows on your panels will also reduce their output so placement should take into account avoiding these obstructions as much as possible.
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 87 locations across Greece. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Greece by location
Solar output per kW of installed solar PV by season in Keratsini
Seasonal solar PV output for Latitude: 37.9625, Longitude: 23.6197 (Keratsini, Greece), 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 32° South in Keratsini, Greece
To maximize your solar PV system's energy output in Keratsini, Greece (Lat/Long 37.9625, 23.6197) throughout the year, you should tilt your panels at an angle of 32° 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 Keratsini, Greece
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 Keratsini, Greece. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 32° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 22° South in Summer | 42° South in Autumn | 52° South in Winter | 30° 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 Keratsini, Greece
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 Keratsini, Greece.
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 Keratsini, Greece
Keratsini is located in the region of Attica, Greece. It's part of the urban area surrounding Athens and it lies on the western coast of the Phaleron Bay, a gulf of the Saronic Gulf. The topography around Keratsini is primarily flat coastal land with some low hills.
In terms of solar PV potential, areas with high sun exposure and minimal shading are ideal for large-scale solar power projects. Given that Keratsini is relatively flat and in a Mediterranean climate zone which enjoys abundant sunshine throughout most of the year, there could be good potential for solar energy here.
However, as an urban area, available space might be limited due to existing structures and infrastructure. Therefore nearby open spaces or industrial zones where large scale installations could be set up without causing disruption would likely be most suitable. Rooftop solar panels on commercial buildings could also be an option if ground space is limited.
The nearby Thriasio Plain to its west might offer larger expanses of open land suitable for such projects while still being close to demand centers like Athens.
Please note that other factors such as grid connectivity, local regulations about land use and renewable energy generation etc., also need to considered when evaluating suitability for large scale Solar PV installations.
Greece solar PV Stats as a country
Greece ranks 24th in the world for cumulative solar PV capacity, with 3,530 total MW's of solar PV installed. This means that 9.30% of Greece's total energy as a country comes from solar PV (that's 4th in the world). Each year Greece is generating 329 Watts from solar PV per capita (Greece ranks 11th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Greece?
Yes, there are incentives for businesses wanting to install solar energy in Greece. The Greek government offers a range of financial incentives and tax breaks for businesses that invest in renewable energy sources such as solar power. These include grants, subsidies, and tax credits. Additionally, the European Union has set up a number of programs to support the development of renewable energy sources in Greece.
Do you have more up to date information than this on incentives towards solar PV projects in Greece? Please reach out to us and help us keep this information current. Thanks!
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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 21st 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.




