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Connection Codes

Grid connection related network codes provide a set of connection requirements for all parties connecting to transmission networks (including generators, demand customers and high-voltage direct-current - HVDC - connections).
The connection codes provide a framework within with operational and market rules can be developed.
There are 3 network codes from the grid connection area: Network Code on Requirements for Generators (RfG), Demand Connection Network Code (DCC) and Network Code on HVDC connections (HVDC).
The RfG is harmonising standards that generators must respect to connect to the grid. These harmonised standards across Europe will boost the market of generation technology and increase competitiveness.​
 
The date of full application, as per the code requirements, is three years after the entry into force. The NC RfG entered into force on 17 May 2016, but only a very small part of these provisions apply before 27 May 2019. These three years can be grouped in two main parts: the first two years will be used by the Member States to assimilate the NC RfG in their national provisions, and the last year will be used by the impacted parties to comply with the Network Code requirements.
 
Documents prepared during the implementation of RfG:
On 15th of October, 2018 the proposal for threshold and requirements of general application has been approved by the NRA and may be found here (in Lithuanian language):
 
The DCC sets harmonised requirements for connecting large renewable energy production plants as well as demand response facilities.
 
Full application, as per the code requirements, begins three years after the entry into force of the European legislation. These three years can be grouped in two main parts: the first two years will be used by the Member States to assimilate the DCC in their national provisions, and the last year will be used by the impacted parties to comply with the Network Code requirements.
On 27th March, 2019 the proposal for requirements of general application has been approved by the NRA and may be found here (in Lithuanian language):
 
 
 
The HVDC specifies requirements for long distance direct current (DC) connections. These are used to link offshore wind parks to mainland or to connect countries over long distances.
On 7th May, 2019 the proposal for requirements of general application has been approved by the NRA and may be found here (in Lithuanian language):
 
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