This two-part article deals with the latest results of a joint research effort by ERDF and EDF R&D to assess the cost of DG/RES integration and study innovative solutions that may help to reduce it. This paper ("Part 1") analyses the connection costs of RES in France on 2012-2020 and 2012-2030 scenarios, as well as the global savings that could be made possible by some new RES integration solutions. The companion paper ("Part 2") focuses on an innovative planning tool under development that allows searching the best option on a case-by-case basis.

The project described in this paper is conducted by EDF Research and development for ERDF (French distribution network operator). The goal is to create a tool based on an ageing model for MV distribution lines as a help to ERDF in managing maintenance and investments.

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