How important renewable energy is today

Albania has historically produced the vast majority of its electricity from hydropower plants. This is an asset, but also a vulnerability: a single year of below-average rainfall is enough for the country to switch from net exporter to net importer. Diversifying sources — sun, wind and small hydropower plants — is not a matter of fashion but of security of supply.

Why now, and not five years ago

Three things have changed the calculation. First, the cost of photovoltaic panels has fallen so far that the payback period is now measured in years, not decades. Second, the market price of energy has become far more volatile, which makes self-generation a financial hedge, not just an environmental one. Third, satellite data and climate models are now open and free to use, so a preliminary assessment no longer requires a year of on-site measurements.

From the idea to the number

Every renewable project starts with the same question: how many kilowatt-hours per year will this site actually produce? The answer depends on factors that are often underestimated.

• Solar radiation is not the same on the coast and in mountain valleys, where morning fog shortens the effective hours.
• Tilt and orientation of the panels can change annual output by 15–25% for the same installed capacity.
• System losses — inverter, cables, dirt on the glass, temperature — routinely eat 10–20% of theoretical output.
• Wind speed counts with its cube: a 10% error in speed becomes roughly a 33% error in energy.

The most common mistakes in preliminary assessment

The costliest mistake is using national averages for a specific site. Albania has very rugged terrain, and two points 20 km apart can have completely different conditions. The second mistake is calculating output without deducting real losses, which gives an optimistic payback period that is never realised. The third, for small hydropower plants, is taking the head from the map without verifying the minimum flow in dry periods — a plant that runs for only half the year is not the same investment.

How AlbGIS helps

For a quick preliminary assessment based on real data, three tools cover all three main sources:

• Photovoltaic Panels — annual output for any point in Albania using PVGIS data, including tilt, orientation, losses and financial savings.
• Wind Energy — assessment using the global ERA5 dataset, with the turbine power curve and capacity factor.
• Hydropower Potential — click two points on the map, get the head from the global terrain model, obtain the flow and calculate the power and annual output.

All three produce a PDF report, which means an idea can become a presentable document within a day.