Changes

==Traditional grids==

Traditionally, energy systems from power generation to homes are one-directional and based on more predictable, controllable and centralised power generation, looking something like this:

===Challenges===

* Electrical power is increasingly substituted for other forms of energy. Electricity demand will increase in the future (notably because of new needs in transport and heat sectors), although it is currently stagnant, mainly because of the economic crisis. Unless a major alternative energy source is discovered, electricity will become the central energy pillar in the long term.