Calculation of Reserve Margins
The methodology adopted for the assessment of forecast adequacy margins related to peak hours examines the ability of the system to top the load in a certain timeframe and in consideration of the necessary replacement reserves margins ( See Terna Grid Code – Cap. 4.4.4), in obedience to the constraints related to transit of energy through the various market zones.
The forecast adequacy margin establishes the difference between the following, for both each geographical area and the considered timeframe:
the available production capacity plus the import of electrical energy from bordering areas;
the load plus the necessary replacement reserves.