Any ways I can save the energy bill?

"Coal Mining Museum Installs Solar Panels To Save on Energy Bill" What do you think of this news? Ironic?

• When a famous coal museum wanted to save some money on its electricity bill, it turned to the obvious power source. Yes, Wales' Big Pit National Coal Mining Museum has installed 200 solar panels on its roof. The panels are expected to save the museum some $650,000 over the next 25 years, the trade magazine Renewable Energy World reported Monday. Not a bad deal for an up-front cost of about $115,000. "Coal is such an important part of Wales’ heritage, and yet green energy will play a major part in its future," the museum's manager told the magazine. "A solar powered coal-mining museum is a fantastic way to celebrate this national journey." http://www.slate.com/blogs/future_tense/2012/12/18/national_coal_museum_installs_solar_panels_wales_big_pit_turns_to_clean.html

• Answer:

  Nemmine.