Does power from all sources cost the same?
Well, the answer is no but yes.
No, because some energy is cheaper to produce, namely power from renewable energy sources like solar, wind, hydroelectric and nuclear power. Thermal (coal), cogeneration and combined cycle (main fuel = natural gas) production methods tend to be more costly.
And yes, because at the end of the day, the energy you consume is a mix of all those sources. If you are in the regulated market, the price per kWh you pay is the result of the price of the entire mix, such as renewables that generate a lot when it rains or the wind blows or it is sunny… but whose input tails off when this does not happen, and combined cycles that can be turned on or off depending on the need ...
One way of navigating all the variables is to choose a rate that guarantees you a price per kWh around the clock, while also allowing you to choose two hours of free electricity a day, or even a whole day with Tempo Happy Day.
To summarise: take control of your energy, understand your bill properly, and decide when you would like to benefit from cheap rate electricity. It’s up to you.