Dynegy Registers Shares as Required by Investor Rights Agreement

HOUSTON–(BUSINESS WIRE)–Dynegy Inc. (NYSE: DYN) has registered shares held by Terawatt (an
Energy Capital Partners entity) as required by the Investor Rights
Agreement (Agreement). The filing was made six months after closing on
the ENGIE transaction, in accordance with the dates required by the
Agreement.

This is a contractually required filing and does not indicate a pending
transaction. The registration includes shares Terawatt owns as part of
the ENGIE transaction and other shares beneficially owned.

ABOUT DYNEGY

At Dynegy, we generate more than just power for our customers. We are
committed to being a leader in the electricity sector. Throughout the
Northeast, Mid-Atlantic, Midwest and Texas, Dynegy operates power
generating facilities capable of producing more than 28,000 megawatts of
electricity—or enough energy to power about 22 million American homes.
We’re proud of what we do, but it’s about much more than just output.
We’re always striving to generate power safely and responsibly for our
wholesale and retail electricity customers who depend on that energy to
grow and thrive.

FORWARD-LOOKING STATEMENTS

This news release contains statements reflecting assumptions,
expectations, projections, intentions or beliefs about future events
that are intended as “forward-looking statements,” particularly those
statements concerning Dynegy’s beliefs regarding the timing of any sales
of Terawatt shares. Discussion of risks and uncertainties that could
cause actual results to differ materially from current projections,
forecasts, estimates and expectations of Dynegy is contained in Dynegy’s
filings with the Securities and Exchange Commission. Specifically,
Dynegy makes reference to, and incorporates herein by reference, the
section entitled “Risk Factors” in its 2016 Form 10-K and subsequent
Form 10-Qs. Any or all of Dynegy’s forward-looking statements may turn
out to be wrong. They can be affected by inaccurate assumptions or by
known or unknown risks, uncertainties and other factors, many of which
are beyond Dynegy’s control.

Contacts

Dynegy Inc.
Media: Julius Cox, 713.767.5800
Analysts:
713.507.6466