Il progetto geotermico di San Gallo è stato abbandonato. Lo hanno annunciato mercoledì le autorità comunali precisando che verrà presa in considerazione solo la possibilità di estrarre gas naturale. Lo scorso anno a causa delle trivellazioni si era verificato un terremoto di magnitudo 3,5 sulla scala Richter.
Fredy Brunner, il municipale responsabile, ha dichiarato che la decisione è stata “molto difficile”. Già in febbraio l’esecutivo cittadino aveva reso noto che solamente il 10% della quantità sperata di acqua calda poteva essere portata in superficie dai 4'000 metri di profondità delle trivellazioni.
Il progetto, per il quale i cittadini avevano approvato nel 2010 un credito di 160 milioni di franchi, era stato però portato avanti nonostante gli scarsi risultati.
L’idea era quella di costruire una vera e propria centrale geotermica per la produzione di corrente elettrica e per l’alimentazione dei riscaldamenti di una buona parte delle abitazioni di San Gallo.
redMM/ats/mrj
RG delle 12.00 del 14/05/2014 Il servizio di Roberto Scolla
RSI Svizzera 14.05.2014, 14:13
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