Is Solar Worth It in Graz, Austria?
Solar Overview
Graz experiences 2070 average annual sun hours and an average solar irradiance of 3.24 kWh/m²/day, making it a location with average solar potential for residential solar energy systems. With a temperate oceanic climate, Graz has favorable seasonal conditions for solar energy production.
Geographic Impact
Positioned at a latitude of 47.0707°, Graz benefits from notable sunlight exposure that varies throughout the year. The peak sun months of June, July, and August enhance solar energy generation significantly, although production can be less optimal in winter months due to shorter days and cloud cover.
Rating Methodology
With its average solar potential rating, Graz's solar resource is reflected in the annual solar irradiance of 1,183 kWh/m²/year and 2070 average sun hours, indicating a reasonable capacity for harnessing solar energy, though it may not be as productive as regions rated above average.
Understanding the Data
The solar irradiance of 3.24 kWh/m²/day supports a solid foundation for solar energy systems in Graz, providing consistent potential for accessibility during sunnier months, which aids homeowners considering solar technology for energy needs.
Cost & Savings Outlook
At the typical electricity price of $0.502/kWh in Graz, solar can offset a meaningful share of electricity costs for homeowners, particularly during the peak summer months when energy needs may be higher.
How It Compares
Compared to nearby cities, Graz shares an average solar potential rating with Innsbruck and Salzburg, indicating similarly moderate viability for solar energy utilization among these locations.
Installation Considerations
Given Graz's latitude, a tilt angle of approximately 30-40 degrees is recommended for solar panels to optimize energy capture throughout the year. Additionally, the temperate oceanic climate means homeowners should consider potential seasonal weather impacts such as snow in winter, which may affect panel performance.
Local Incentives
Check local and national incentive programs, which vary by country and region.
Compare Solar Potential in Austria
Seasonal variations in Graz result in warmer summer months that can deliver higher energy output, particularly in June, July, and August, while winter months may see reduced production due to fewer sun hours and potential snowfall.
Frequently Asked Questions
How many sun hours does Graz get?
Graz receives an average of 2070 sun hours annually.
What is the average temperature in Graz?
The average temperature in Graz is approximately 10.9°C.
What months are best for solar energy production in Graz?
The peak months for solar energy production in Graz are June, July, and August.
What is the solar irradiance in Graz?
Graz has an average solar irradiance of 3.24 kWh/m²/day.
How much can I save with solar in Graz?
With the typical electricity price at $0.502/kWh, solar can significantly reduce your electricity expenses.
What tilt angle is recommended for solar panels in Graz?
A tilt angle of around 30-40 degrees is recommended for maximizing solar energy capture in Graz.
Solar Resource & Estimated Production
3.24 kWh/m²/day average solar irradiance (1,183 kWh/m²/year).
5 kW system: ~4,553 kWh/year estimated
10 kW system: ~9,106 kWh/year estimated
Estimates only — actual production depends on equipment, shading, and installation specifics. Consult a professional installer for a precise assessment.
Recommended Panel Orientation
Tilt angle: 47° from horizontal
Azimuth: 180° (true South)
Standard year-round heuristic based on latitude — a professional installer can optimize further for your roof.
Monthly Daylight Hours
Jan
8.7h
Feb
10h
Mar
11.6h
Apr
13.4h
May
14.9h
Jun
15.7h
Jul
15.3h
Aug
14h
Sep
12.3h
Oct
10.6h
Nov
9.1h
Dec
8.3h
Location Map
Loading solar data...