Adding concise background: In the context of the Estonian energy sector, Janno Reiljan, who serves on the supervisory board of Eesti Energia, disclosed that the owners of Narva Power Grid have expressed their intention to sell.

Highlighting sentiment: The disclosure from Janno Reiljan suggests a potentially significant development within Eesti Energia and the broader energy market, with implications for potential changes in ownership or strategic direction. The sentiment in this context is neutral, indicating a notable event without inherently positive or negative connotations.

Synthesizing enhanced sentence: Janno Reiljan, a member of the Eesti Energia supervisory board, revealed that the owners of Narva Power Grid had conveyed their desire to sell, signaling a potentially significant development in the Estonian energy sector.