An elderly man looks through photographs, which were repaired after being washed away by the earthquake and tsunami at a gymnasium March 10, 2014 in Sendai, Miyagi prefecture, Japan.

Japan's economy is thriving despite the four-year shutdown of the country's nuclear power stations following the massive earthquake and tsunami in March 2011, analysts say.

Japan's switch to fossil fuel following the disaster at the Fukushima Daiichi nuclear plant drove up electricity prices by around 30 percent since 2011, raising concerns that energy costs could hit manufacturers' bottom lines. Yet concerns appear to have been overblown as manufacturers were quick to adapt, while the Japanese yen's over 40 percent decline against the dollar since 2013 helped boosted profits.