Dec 19 (Reuters) - CNP /CAISSE DES DEPOTS/EDF
* CNP, Caisse des Depots agree deal to buy 49.9 pct of grid operator RTE, say advisers to CNP and Caisse des Depots
* In July, EDF entered exclusive talks with Caisse des Depots and CNP Assurances to sell them a 49.9 percent stake in RTE on the basis of an indicative value of 8.2 billion euros ($8.6 billion) for 100 percent of RTE’s equity.
* Deal approved by EDF’s board on Dec. 14. Source text for Eikon: Further company coverage: ($1 = 0.9577 euros)