San Vito Chietino, Abruzzo, Italy is a decent location for year-round solar energy generation, but its effectiveness varies throughout the seasons. In simple terms, the amount of electricity you can get from each kilowatt of installed solar panels changes with the time of year.
During summer, you can expect to generate about 7.14 kilowatt-hours (kWh) per day for each kilowatt (kW) of solar panels installed. This makes summer an ideal time for solar energy production at this location due to longer daylight hours and more direct sunlight.
In autumn and winter, however, the output drops significantly to 3.34 kWh/day and 2.13 kWh/day respectively because there's less sun exposure due to shorter days and lower sun angles.
Spring sees an improvement in output up to around 5.71 kWh/day as daylight hours increase again leading into summer.
To maximize total annual power generation from your solar panels in San Vito Chietino, Abruzzo, it's best to tilt them at an angle of 36 degrees facing south. This angle takes advantage both of the path that the sun travels across the sky during different times of year and also reduces potential shading issues from surrounding objects or structures.
As far as local factors that could affect solar production are concerned: weather patterns such as frequent cloud cover or fog could potentially reduce sunlight availability; environmental factors like dust or bird droppings could block sunlight if not cleaned regularly; also any nearby buildings or trees might cast shadows over your panels reducing their efficiency.
To mitigate these issues: regular cleaning helps keep your panels clear; trimming trees ensures they don't overshadow your installation; considering site specifics before installing can help avoid potential shading problems from surrounding structures etc.; monitoring system performance allows early detection & rectification if something goes wrong thereby ensuring optimal power generation all-year round.
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 338 locations across Italy. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Italy by location
Solar output per kW of installed solar PV by season in San Vito Chietino
Seasonal solar PV output for Latitude: 42.2875, Longitude: 14.4439 (San Vito Chietino, Italy), 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 36° South in San Vito Chietino, Italy
To maximize your solar PV system's energy output in San Vito Chietino, Italy (Lat/Long 42.2875, 14.4439) throughout the year, you should tilt your panels at an angle of 36° 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 San Vito Chietino, Italy
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 San Vito Chietino, Italy. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 36° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 26° South in Summer | 45° South in Autumn | 56° South in Winter | 34° 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 San Vito Chietino, Italy
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 San Vito Chietino, Italy.
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 San Vito Chietino, Italy
San Vito Chietino is located in the Abruzzo region of Italy, along the Adriatic Sea. The topography is a mix of coastal plains and hilly terrain that rises towards the Apennine Mountains to the west. The area features abundant sunshine and clear skies for much of the year.
The most suitable areas for large scale solar PV would likely be on flatter terrains or south-facing slopes where there is maximum exposure to sunlight throughout the day. Areas with less vegetation cover would also be ideal as they present fewer obstacles for installation and maintenance.
However, it's important to consider other factors such as proximity to power grids for easy transmission, local regulations regarding land use and environmental impact assessments before deciding on a location.
Furthermore, given its coastal location, San Vito Chietino could also explore offshore solar farms which are becoming increasingly popular worldwide due to their high efficiency and minimal land use.
Ultimately though, a detailed feasibility study including solar irradiance measurements would need to be conducted by an expert in order to identify optimal sites for large-scale solar PV installations around San Vito Chietino.
Italy solar PV Stats as a country
Italy ranks 6th in the world for cumulative solar PV capacity, with 22,698 total MW's of solar PV installed. This means that 8.30% of Italy's total energy as a country comes from solar PV (that's 8th in the world). Each year Italy is generating 381 Watts from solar PV per capita (Italy ranks 7th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Italy?
Yes, there are several incentives for businesses wanting to install solar energy in Italy. The Italian government offers a range of financial incentives and tax credits for businesses that install solar energy systems. These include the Conto Energia scheme, which provides feed-in tariffs for electricity generated from renewable sources; the Superbonus 110%, which allows businesses to deduct up to 110% of their investment in renewable energy systems from their taxes; and the Ecobonus 65%, which provides a 65% tax deduction on investments in renewable energy systems. Additionally, businesses may be eligible for grants or loans from regional governments or other organizations.
Do you have more up to date information than this on incentives towards solar PV projects in Italy? 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: Friday 17th 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.




