GPX aims to connect green energy production with green energy consumption in a reliable and unambiguous way. There are three subjects that play a role in this development:

1) the electricity meter is ever more subject to standardization

2) the certification of the origin of electricity is ever more standardized (Guarantees of Origin).

3) the international tendency to develop intelligent electricity grids (Smart Grids).

Between those three elements there is room for new innovations. With a test, the combination of the smart meter and the consumption of green certificates can be researched. Not only in technical sense, but also socially. There is a need for an acceptable system to strengthen the tie with the source of electricity.

Background information for a better understanding:

About the smart meter. There is much to do about sustainable production and the idea to connect the public to this specific product. This is working to a certain extent with the principle of the free market and the choice for "green". However, the targeted audience is receiving the information on a level that is still unclear about the specifics of the o