EXHIBIT 99(a)(5)(x)

ELYO SUBSIDIARY COMPLETES CASH TENDER OFFER FOR SHARES OF TRIGEN
ENERGY CORPORATION

NANTERRE, France--(BUSINESS WIRE)--March 27, 2000--ELYO, an energy
subsidiary of the Suez Lyonnaise des Eaux Group, announced today completion
of its tender offer for any and all of the outstanding shares of common
stock of Trigen Energy Corporation (NYSE: TGN) at $23.50 per share in cash,
without interest. The offer was made through T Acquisition Corp., an
indirect wholly owned subsidiary of ELYO. The tender offer expired at
midnight, New York City time, on Friday, March 24, 2000, at which time
approximately 6,082,448 shares had been tendered, including approximately
66,570 shares tendered by notice of guaranteed delivery. Prior to
commencement of the offer, ELYO beneficially owned, or had a contractual
right to purchase, 5,823,886 shares (excluding shares held by ELYO's
non-wholly owned subsidiary, Compagnie Parisenne de Chauffage Urbain, which
were tendered in the offer). After giving effect to the results of the
tender offer, ELYO presently beneficially owns approximately 11,906,334
shares of Trigen common stock, or approximately 96% of total shares
outstanding.

ELYO also announced that the previously disclosed subsequent offering
period will begin immediately. During the subsequent offering period, T
Acquisition Corp. will purchase any and all shares of Trigen common stock
tendered during that period that ELYO does not already beneficially own for
$23.50 per share in cash, without interest. The subsequent offering period
is expected to remain open until March 29, 2000, unless extended. Shares
that are tendered during the subsequent offering period may not be
withdrawn.

Trigen is a leading developer, owner and operator of industrial, commercial
and institutional district energy and combined heat and power (CHP) systems
in North America. The company serves more than 1,500 customers with energy
produced at 49 plants in 20 states, Canada and Mexico.

Contact:

     ELYO

     Gilles Alligner, 1 (33) 1 41 20 1293
     Director of Communications
           or

     Morgen-Walke Associates, Inc.
     Jeffrey Zack, 212.850.5643