Energy prices to be down by 20%

I heard this over the news last night that energy prices will fall by 20% over the next 5 years because of greater competition and LNG. I went really, uh, am I dreaming or is it a joke? Would anyone of you believe that this can really come true? We have heard so many great speeches that privatisation and competition will improve efficiency and bring down cost. I have yet to see one instance that