Grid connection

In general the grid access is regulated in Croatian Gas Act – in compliance with EU Directive 2003/55/EC. Under Croatian Gas Act producers of biogenic gas have the right to grid access, i.e. they have the right to use the Croatian grid system.  The distribution system operator charges the biomethane injector with those expenses incurred through the initial establishment of the connection of the biomethane plant to the distribution grid in form of a grid access fee. These costs must be entirely borne  by the biomethane supplier.

Cases for refusal of grid access
The quality requirements for natural gas are specified int he Grid Code for Access to the Gas Pipeline Transportation System (Official Gazette 126/03), but there are no mention of biogas quality requirements. The grid operator determines the minimum quality requirements of biogas for safe operation. 

System usage fees (non-discrimination?)
The charges for the system use, such as connection, distribution and transport tariffs are evaluated according to the technical possibilities of the network operator in conjunction with the distribution area manager. Natural gas and biomethane are treated completely in the same way. Natural gas and biomethane are treated completely in the same way. Avoided grid operation costs are not considered, as for example in Germany. There are no incentives for grid operators to favour biomethane injectors in any way.  A possible financing of biomethane induced grid development through the system usage fee is not currently provided for.

Connection cost burden sharing
So far in Croatia there is no cost burden sharing of capital or operational costs related to biomethane production and/or injection. The costs should be borne completely by the biomethane upgrading and injection installations owners. There is no burden sharing with socialisation of costs by grid usage tariffs. 

Network extension
So far there has been no assessment of the need for a network extension.