Dublin,  Ireland - November 14, 2023 Alternus Energy Group plc ("Alternus")
(OSE: ALT), today announced that Clean Earth Acquisitions Corp. has filed a
definitive proxy statement (the "Proxy Statement") with the U.S. Securities and
Exchange Commission ("SEC") and announced the date for Clean Earth's Special
Meeting of Stockholders (the "Special Meeting") to, among other things, approve
the previously announced proposed business combination (the "Business
Combination") with Alternus.

Clean Earth will hold the Special Meeting on December 4th, 2023 at 10:00 AM EST
virtually via live webcast at https://web.lumiagm.com/290463470 (passcode
"cleanearth2023"). Clean Earth stockholders of record as of the close of
business on November 8th, 2023 (the "Record Date") are entitled to receive
notice of, attend and vote at the Special Meeting.

Investors and shareholders of Alternus are urged to read the entire Proxy
Statement and other documents filed in connection with the Business Combination
with the SEC, as they contain important information about the proposed
transaction.

CEO Comments

Vincent Browne, CEO of Alternus, commented, "Today's announcement represents
significant progress in our mission to create a lasting impact in our industry. 
As we prepare to merge with Clean Earth, which will open opportunities to access
capital help accelerate our growth, we are filled with a sense of purpose and
anticipation. I want to express my appreciation to our team for their tireless
effort, and to our future partners for their trust and collaboration."

"This filing is a key milestone in completing the Business Combination with
Alternus," stated Aaron Ratner, CEO of Clean Earth. "We could not have made this
progress without the support of our stockholders, whose patience was critical as
we navigated a complex process.  As we contemplate the outlook for renewable
energy and Alternus' leading position, we are firmly convinced that completing
this deal is in the best interests of our stockholders."

Business Combination Agreement

On October 12, 2022, Clean Earth entered into a definitive business combination
agreement (as amended on April 12, 2023) with Alternus and Clean Earth
Acquisitions Sponsor LLC, which, upon stockholder approval, will result in
Alternus becoming a publicly traded company. Upon closing of the transaction,
which is expected to occur shortly after the Special Meeting, and subject to the
terms of the business combination agreement, Clean Earth will be renamed
"Alternus Clean Energy Inc." An application for listing on the Nasdaq Capital
Market of the combined company's common stock and warrants under the new ticker
symbols "ALCE" and "ALCEW," respectively, is expected to be effective upon
consummation of the Business Combination.

About Alternus Energy Group Plc

Alternus is a transatlantic clean energy independent power producer (IPP).
Headquartered in Ireland, we currently develop, install, own, and operate
utility scale solar parks in Europe and the U.S. Our highly motivated and
dynamic team at Alternus have achieved rapid growth in recent years. Building on
this, our goal is to reach 3GW of operating projects by the end of 2026 through
continued organic development activities and targeted strategic opportunities.
Our vision is to become a leading provider of 24/7 clean energy delivering a
sustainable future of renewable power with people and planet in harmony. For
more information visit www.alternusenergy.com.

About Clean Earth Acquisitions Corp.

Clean Earth Acquisitions Corp. is a blank check company formed for the purpose
of effecting a merger, share exchange, asset acquisition, stock purchase,
recapitalization, reorganization or other similar business combination with one
or more businesses or entities, focused on identifying and developing a
strategic partnership with a business that participates in the global energy
transition ecosystem that is facilitating the way that energy is produced,
stored, transmitted, distributed, and consumed, all while reducing or mitigating
greenhouse gas emissions. For more information visit
www.cleanearthacquisitions.com.

Forward-Looking Statements

Certain statements included in this notice that are not historical facts are
forward-looking statements for purposes of the safe harbor provisions under the
United States Private Securities Litigation Reform Act of 1995. Forward-looking
statements are sometimes accompanied by words such as "believe," "may," "will,"
"estimate," "continue," "anticipate," "intend," "expect," "should," "would,"
"plan," "predict," "potential," "seem," "seek," "future," "outlook" and similar
expressions that predict or indicate future events or trends or that are not
statements of historical matters. These forward-looking statements include, but
are not limited to, statements regarding Alternus' growth, prospects and the
market for solar parks and other renewable power sources. These statements are
based on various assumptions, whether or not identified in this notice, and on
the current expectations of the respective management teams of Alternus and
Clean Earth and are not predictions of actual performance. These forward-looking
statements are provided for illustrative purposes only and are not intended to
serve as and must not be relied on by an investor as, a guarantee, an assurance,
a prediction or a definitive statement of fact or probability. Actual events and
circumstances are difficult or impossible to predict and will differ from
assumptions. Many actual events and circumstances are beyond the control of
Alternus and Clean Earth.

These forward-looking statements are subject to a number of risks and
uncertainties, including: the impact of reduction, modification or elimination
of government subsidies and economic incentives (including, but not limited to,
with respect to solar parks); the impact of decreases in spot market prices for
electricity; dependence on acquisitions for growth in Alternus' business;
inherent risks relating to acquisitions and Alternus' ability to manage its
growth and changing business; risks relating to developing and managing
renewable solar projects; risks relating to photovoltaic plant quality and
performance; risks relating to planning permissions for solar parks and
government regulation; Alternus' need for significant financial resources
(including, but not limited to, for growth in its business); the need for
financing in order to maintain future profitability; the lack of any assurance
or guarantee that Alternus can raise capital or meet its funding needs;
Alternus' limited operating history; risks relating to operating
internationally, include currency risks and legal, compliance and execution
risks of operating internationally; the potential inability of the parties to
successfully or timely consummate the proposed business combination; the risk
that any regulatory approvals are not obtained, are delayed or are subject to
unanticipated conditions that could adversely affect the combined company or the
expected benefits of the proposed business combination; the approval of the
stockholders of Clean Earth is not obtained; the risk of failure to realize the
anticipated benefits of the proposed business combination; the amount of
redemption requests made by Clean Earth's stockholders exceeds expectations or
current market norms; the ability of Alternus or the combined company to obtain
equity or other financing in connection with the proposed business combination
or in the future; the outcome of any potential litigation, government and
regulatory proceedings, investigations and inquiries; the risk that the proposed
business combination disrupts current plans and operations as a result of the
announcement and consummation of the Transaction; costs related to the proposed
business combination; the impact of the global COVID-19 pandemic; the effects of
inflation and changes in interest rates; an economic slowdown, recession or
contraction of the global economy; a financial or liquidity crisis; geopolitical
factors, including, but not limited to, the Russian invasion of Ukraine; global
supply chain concerns; the status of debt and equity markets (including, market
volatility and uncertainty); and other risks and uncertainties, including those
risks to be included under the heading "Risk Factors" in the Proxy Statement and
also those included under the heading "Risk Factors" in Clean Earth's final
prospectus relating to its initial public offering dated February 23, 2022 and
other factors identified in Clean Earth's prior and future filings with the SEC,
available at www.sec.gov.

If any of these risks materialize or Clean Earth's and Alternus' assumptions
prove incorrect, actual results could differ materially from the results implied
by these forward-looking statements. There may be additional risks that neither
Clean Earth nor Alternus presently know, or that neither Clean Earth nor
Alternus currently believe are immaterial, that could also cause actual results
to differ from those contained in the forward-looking statements. In addition,
forward-looking statements reflect Clean Earth's and Alternus' expectations,
plans or forecasts of future events and views as of the date of this notice.
Clean Earth and Alternus anticipate that subsequent events and developments will
cause Clean Earth's and Alternus' assessments to change. However, while Clean
Earth and Alternus may elect to update these forward-looking statements at some
point in the future, Clean Earth and Alternus specifically disclaim any
obligation to do so.  Neither Clean Earth nor Alternus anticipate that
subsequent events and developments will cause Clean Earth's and Alternus'
assessments to change. However, while Clean Earth and Alternus may elect to
update these forward-looking statements at some point in the future, Clean Earth
and Alternus specifically disclaim any obligation to do so. These
forward-looking statements should not be relied upon as representing Clean
Earth's or Alternus' assessments of any date subsequent to the date of this
notice. Accordingly, undue reliance should not be placed upon the
forward-looking statements.

Additional Information About the Business Combination and Where to Find It

In connection with the Business Combination, on November 13, 2023, Clean Earth
filed a definitive Proxy Statement with the SEC relating to the Business
Combination. Clean Earth has mailed or will mail the Proxy Statement and other
relevant documents to its stockholders as of the Record Date for voting on the
Business Combination. This communication does not contain all the information
that should be considered concerning the Business Combination and is not
intended to form the basis of any investment decision or any other decision in
respect of transactions contemplated by the business combination agreement.
Clean Earth stockholders and other interested persons are advised to read the
Proxy Statement and other documents filed in connection with the Business
Combination, as these materials contain important information about Clean Earth,
Alternus and the Business Combination. Clean Earth stockholders are able to
obtain copies of the Proxy Statement, and other documents filed with the SEC,
once available, without charge at the SEC's website at www.sec.gov, or by
directing a request to: Clean Earth Acquisitions Corp., 12600 Hill Country Blvd,
Building R, Suite 275, Bee Cave, Texas 78738, Attention: Martha Ross, CFO & COO,
telephone: (800) 508-1531. The information contained on, or that may be accessed
through, the websites referenced in this communication is not incorporated by
reference into, and is not a part of, this communication. Before making any
voting or investment decision, investors and security holders of Clean Earth are
urged to carefully read the entire Proxy Statement and other documents filed in
connection with the Business Combination with the SEC, because they contain
important information about the proposed transaction and the related stockholder
proposals.

Participants in the Solicitation

Clean Earth, Alternus and their respective directors and executive officers may
be deemed participants in the solicitation of proxies from Clean Earth's
stockholders in connection with the Business Combination. Information regarding
the directors and executive officers of Clean Earth and their ownership of Clean
Earth common stock is set forth in Clean Earth's final prospectus filed with the
SEC on November 19, 2021, in connection with Clean Earth's initial public
offering. Information regarding the persons who may, under SEC rules, be deemed
participants in the solicitation of proxies to Clean Earth's stockholders in
connection with the Business Combination will be s included in the proxy
statement that Clean Earth intends to file with the SEC. Additional information
regarding the interests of participants in the solicitation of proxies in
connection with the Business Combination will be included in the proxy statement
that Clean Earth intends to file with the SEC. You may obtain free copies of
these documents as described above.

No Offer or Solicitation

This communication is not a proxy statement or solicitation of a proxy, consent
or authorization with respect to any securities or in respect of the Business
Combination and shall not constitute an offer to sell or a solicitation of an
offer to buy any securities nor shall there be any sale of securities in any
state or jurisdiction in which such offer, solicitation, or sale would be
unlawful prior to registration or qualification under the securities laws of any
such state or jurisdiction. No offer of securities shall be made except by means
of a prospectus meeting the requirements of the Securities Act.

Alternus Investor Contact:
Investor Relations
ir@alternusenergy.com 
Tel:+1-913-815-1557

Clean Earth Investor Contact:
Matthew Devereaux
Clean Earth Acquisitions Corp.
inbound@cleanearthacquisitions.com 
Tel: +1-800-508-1531

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