I just got my electricity bill for this year.

It’s gone down by 65% from last year. 65%!

What has changed? Just one thing: I bought a new fridge. I never expected the difference to be this great. I realised I’d save energy, never thought it would be this much. My new fridge has a payback time of about 3 to 4 years.

I wonder, all those people who had photovoltaics installed recently, how old is their fridge?

I also wonder how much electricity I’ll use in the new house. If it’s as little as I’m using now, I won’t need many photovoltaics to compensate.