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Impact of a mandatory Time-Of-Use tariff on the Italian Residential Custormers

pubblicazioni - Presentazione

Impact of a mandatory Time-Of-Use tariff on the Italian Residential Custormers

Questo paper illustra i risultati di una ricerca condotta su un campione di clienti residenziali dopo l’introduzione della tariffa bioraria obbligatoria, con lo scopo di valutare come i clienti hanno risposto a e come le loro abitudini sono stata influenzate dalla nuova tariffa.

Flat rate is the most common method to bill electricity consumption because it minimizes the costs of metering and billing. However, it does not induce customers to adjust their consumption according to the abundance or scarcity of electricity: in particular, it does not encourage them to lower it during high demand hours. Real time rate can be found, instead, on the opposite side because it links the price paid by the customers to the real costs of electricity; this requires a more complex metering infrastructure because consumptions need to be recorded in each time interval with their specific prices but it allows price signals to reach the customers in the proper way. The drawback is the fact that customers who are not able to move their consumptions will face higher costs. Time-of-Use (ToU) tariffs stand in between: there are a certain number of time slots during the day, in which the price paid by the customers is established in advance, based on mid-term (e.g. quarterly) predictions; this allows for a reduced complexity of the metering infrastructure and the longer the time slots, the more averaged are the price signals. Such a mechanism relates in some degree the price variability of electricity with the costs of its supply, allowing a collaborative response to the demand among customers (the so called “demand-response”) but, at the same time, it relatively protects (w.r.t. real time rates) those who are not able to modulate their demand according to the price.

 

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