Without question, electricity prices have gone up throughout the years. Not only does it follow the trends of general inflation, but just keeping everything on track with new technology and more usage can make a big difference.
Electricity is a luxury that many people take for granted in developed countries, but it takes a lot of infrastructure to make everything correct. They have been able to keep prices low because of competition, but people are using it more than ever. Whether it is plugging in their phones, television, computers, and so much more, when electricity goes out, things become a lot more difficult.
As is always the case, using electricity during non-peak times is the best way to save some money on it. The price of electricity fluctuates a bit, so companies are going to give people a bit of a break for that reason.