Another claim about supermarket chiller doors

 

My TV is a small one and is rated at 50W. In Joules over 76 years, that is 76 x 365.25 x 24 x 60 x 60 x 50 = 1.2 x 10^11J. Having got 0.6 x 10^11 for the claim about a lighthouse, there's a 50% difference here. However, given the variation in power of a TV and presumably of a lighthouse, they are not bad in terms of ball park figure.