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Una scintilla. A volte per cambiare il corso delle cose basta una scintilla. E questo anche in materia di energia. Un esempio viene dal comune di Geltwil (nel canton Argovia al confine con Lucerna) oggi considerato tra i più virtuosi di tutta la Svizzera in materia di risparmio e utilizzo di fonti alternative. A far scoprire alle quasi 200 anime del paese una nuova dimensione è stato un imprenditore: Franz Käppeli. Il milione e rotti che ha donato al comune garantisce a chi vuole rinnovare i propri impianti la copertura del 30% dei costi. Un aiuto che sommato a quelli dei programmi di Confederazione e cantone ha cambiato la vita di molti.
Pian piano la gente ha cominciato ad investire privatamente. Un milione di regalo ha già generato cinque milioni di investimenti per sostituire i riscaldamenti a gasolio, ma non solo. A Geltwil a farla da padrona ora sono termopompe, sonde geotermiche, impianti a pellet, pannelli solari e isolazioni termiche all'avanguardia. In due anni hanno permesso alla settantina di economie domestiche che fanno il paese, di risparmiare un bel po' di energia (330'000 chilowattora all'anno) e di beneficiare delle entrate derivanti dalla vendita della corrente in esubero (circa 260'000 chilowattora).
Diem/TG
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