Solar PV Analysis of Perugia, Italy
Perugia, Umbria, Italy is a decent location for generating solar energy all year round, but it's not perfect. In simple terms, the amount of electricity you can generate from solar panels depends on how much sunlight they get. This varies throughout the year due to changes in weather and the angle of the sun.
In summer, when days are longest and sunniest, you could expect to generate around 7.20 kilowatt-hours (kWh) per day for each kilowatt (kW) of solar panels installed. This is quite good! In spring, with longer daylight hours than winter or autumn but less intense sunlight than summer, you could still produce a reasonable 5.45 kWh/day per kW.
However in autumn and winter when there's less sunlight because days are shorter and often cloudier or rainier; your output drops significantly to about 3.33 kWh/day per kW in autumn and just 1.88 kWh/day per kW in winter.
Therefore if you're considering installing solar panels at this location it would be best to plan using them more intensively during spring and especially summer months while expecting a reduced output during fall/winter periods.
To make sure your system works as efficiently as possible throughout the year it's recommended that fixed panel installations here should be tilted at an angle of about 36 degrees towards south which helps them capture maximum available sunlight over different seasons.
As far as local factors that could impede solar production - Perugia does have some cloudy days particularly in fall/winter which will reduce output plus occasional snowfall might cover up panels temporarily reducing their efficiency until cleared off. To mitigate these issues regular cleaning/maintenance is advised especially after adverse weather events like heavy snowfall or dust storms etc., ensuring unobstructed access to direct sunlight for maximum productivity from installed PV system.
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 Perugia
Seasonal solar PV output for Latitude: 43.1108, Longitude: 12.398 (Perugia, 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 Perugia, Italy
To maximize your solar PV system's energy output in Perugia, Italy (Lat/Long 43.1108, 12.398) 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 Perugia, 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 Perugia, 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 |
|---|---|---|---|
| 27° South in Summer | 46° South in Autumn | 57° South in Winter | 35° 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 Perugia, 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 Perugia, 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 Perugia, Italy
Perugia, Italy is located in the region of Umbria and is characterized by a hilly landscape. The city itself sits on a hilltop with valleys surrounding it. The terrain features rolling hills and mountains to the east, while lower lying areas can be found towards the west.
For large-scale solar PV installations, flat or gently sloping surfaces are ideal as they allow for easier installation and maintenance, as well as maximum sun exposure. Given Perugia's topography, lower-lying areas towards the west may be more suitable for such installations.
However, it's important to note that suitability also depends on other factors such as local climate conditions (like average hours of sunlight), land use restrictions, proximity to power grids for energy transmission etc. Therefore a detailed feasibility study would need to be conducted before selecting any potential sites.
There are several vineyards and agricultural lands in this region which could potentially host solar panels without too much disruption to existing land use. In addition to ground-mounted systems, rooftop solar PV systems could also be considered within urban areas of Perugia if space constraints exist on the ground level.
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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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 4th of June 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.
