The Dynamic Map of Wallonia is a tool that shows in a structured and transparent way the contribution of photovoltaic and wind energy to the energy system of today and tomorrow. It is based on a theoretical calculation model that seeks to represent complex reality as faithfully as possible. This model, which uses available data, is built with simplifying assumptions and the corresponding margins of error. The assumptions used in the calculations and the sources of imprecision conceded are as follows:
· Elia's data for installed power is considered reliable and representative. 3E estimates the total Walloon energy demand as 33% of the total grid load of the Belgian electricity grid;
· The installed powers in the calculation are always lower than in reality. This has two reasons:
o SPW-Energie updates the data on installed solar and wind capacity every six months.
o While it is mandatory, not every solar panel installation is reported to the grid operator. These unlisted installations give an incomplete overview of the installed capacity of solar panels and, hence, an incorrect implementation of the renewable energy goals for Wallonia;
· Not all renewable installations in Wallonia are monitored by Elia. Therefore, Elia's electricity production from renewable sources is first scaled to the installed capacity reported by SPW-Energie. This is done based on a weighted factor that depends on the installed capacity and weather forecast for each municipality.
· The yields of solar panels, onshore (on land) and offshore wind turbines are based on standard installations in Wallonia. Naturally, the performance of individual installations may deviate from this.
· Electricity consumption of an average household in Wallonia = 3500 kWh/year or 9.6 kWh/day (CWaPE).
· CO2 factor of the conventional electricity sector, a Combined Cycle Gas Turbine plant on natural gas = 502.2 kg CO2/MWh (Awac).
