Kuzalisha umeme kupitia maporomoko ya maji ujuwe kuwa unaharibu mazingira. Kwa hiyo huyo aliyekupa tahadhari hakukosea. Na ukizuiliwa hilo litakuwa ni kosa la kwanza.
Pili: kuzalilisha umeme kupitia maporomoko ya maji gharama zake ni kubwa sana, na ni tecnology iliyopitwa na wakati.
Kwa...
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