Predicting household energy consumption?
At first sight, the total acumulated energy consumption seems to have a linear relation with time, so I suggest to try a linear regression at first. There are several libraries you can use to code it. I recommend you do it with pandas and sklearn, here is an answer related to this: answer.

If the relation is not linear, so I could try with a more complex model (but I suggest to keep simplicity at first). Since you are trying to predict a temporal serie, I would try with an LSTM model. Here is a tutorial to implement an LSTM neural network with keras.