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The Italian Ancillary Service Market: New Opportunities for BTS Demand Response

pubblicazioni - Presentazione

The Italian Ancillary Service Market: New Opportunities for BTS Demand Response

Si è analizzata, in simulazione, la possibile fornitura del servizio di bilanciamento tramite “load shifting” (si veda la Delibera n. 300/2017 di ARERA), da parte di aggregati di stazioni radio base per le comunicazioni mobili supportate da sorgenti di backup (pacchi batterie o gruppi elettrogeni). Assumendo una disponibilità a ridurre il prelievo dalla rete per un massimo di una, due, tre o quattro ore consecutive al giorno, si ottiene una buona redditività se la remunerazione “pay-as-bid” per l’energia tagliata è integrata da una remunerazione in capacità.

The recent development of non-programmable renewable energy sources has increased the need for Ancillary Services (AS), to guarantee secure and reliable power system operation; at the same time, the contribution of large traditional generation units to AS is decreasing. The regulatory framework for AS supply, and thus the Ancillary Service Market (ASM) rules, is therefore evolving. In Italy, e.g., pilot projects have been started to allow medium-small generation units, load units and Battery Energy Storage Systems (BESS), also in an aggregated form, to participate in the ASM to supply balancing resources (e.g. replacement reserve).

In this work, a preliminary techno-economic analysis is carried out about how aggregated Base Transceiver Stations (BTS) for mobile communications could supply upward balancing services via participation in the Italian ASM. The BTS are assumed to be available to curtail absorption from the main grid for up to one, two, three or four consecutive hours a day; during interruptions, the BTS energy supply is replaced by local backup sources such as BESS or diesel generators. Fixed-price offers for the curtailed energy are simulated.

Investment and operation costs for BTS control and communication systems to enable service supply are also considered. Results show a good profitability of this new BTS operation if a capacity remuneration is introduced in addition to the pay-as-bid remuneration for the curtailed energy.

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