Pan-European independent power producer ("IPP"), Alternus Energy Group Plc
(OSE:ALT) (the "Company" or "Alternus"), is pleased to announce that CEO Andre
Kempenaars of Unisun Energy Holding BV ("Unisun"), an Alternus company, took
part in a roundtable discussion on July 5th 2021, with acting Minister of
Economic Affairs and Climate Policy, Cora van Nieuwenhuijzen and Dick Benschop,
president-director of the Royal Schiphol Group, among others, to mark the start
of construction of a 14 MWp solar PV installation located parallel to the runway
at Rotterdam The Hague Airport ("RTHA").

This installation will be one of the largest solar parks in the Rotterdam Region
and the first solar park located within an international airport boundary in the
Netherlands. It will form part of a Smart Energy System (SES) for storage and
the regulation of energy flows at the airport marking an important milestone in
the RTHA's journey towards becoming more sustainable. Once operational, the
solar park will produce approximately three times the amount of electricity
required to operate RTHA annually. The additional electricity generated will be
used to power the surrounding areas. 

RTHA was recently accredited with the highest level (level 4+) of Airport Carbon
Accreditation ("ACA") sustainability certificate. The ACA is the only global
institutionally approved carbon management programme for airports to monitor and
reduce their carbon footprints. RTHA is the first airport in the Netherlands to
reach level 4+ of this accreditation and only 4 other airports in the world have
reached this level.

The solar park is being constructed by Unisun under a joint venture with
Rotterdam The Hague Innovation Airport ("RHIA") partners. The park will benefit
from a subsidy under the National Government Stimulation of Sustainable Energy
Production and Climate Transition (SDE+) for the first 15 years and thereafter
by energy sales to the national grid.

Mr. Andre Kempenaars, CEO of Unisun Energy Holding BV, commented "We're very
happy to finally take off with this special project after taxi for almost 3
years with preparations, and of course to be part of RTHA's journey towards
becoming more sustainable. We intend to have the first energy being sold to the
grid by end of 2021".

Alternus owns the solar park through a Special Purpose Vehicle ("SPV") which is
already fully funded from equity and bank debt. Uper Energy, a wholly owned
subsidiary of Unisun will provide O&M services to the park for the next 30
years. The park is expected to go into production in Q4 of 2021 and to generate
over EUR 1.5 million of long term annual recurring revenues to Alternus.

For more information, please contact: 
Vincent Browne, CEO and Executive Chairman at Alternus, Phone: +353 1 907 3445
or e-mail: vb@alternusenergy.com 
Michael Hansson, IR and Media contact for Alternus, Phone: +47 994 53 303 or
e-mail: hansson@firsthouse.no

About Alternus Energy Plc

Alternus Energy Group (OSE:ALT) is a fast-growing pan-European independent power
producer ("IPP"), headquartered in Ireland, with a focus on the midsized utility
scale solar PV market. Alternus owns and operates a diverse portfolio of utility
scale solar PV parks that connect directly to national power grids on long-term
government contracts ("FiT") and/or Power Purchase Agreements ("PPAs") with
investment grade off-takers. Having started in 2016 with two parks and 6 MWp
capacity, the current portfolio consists of 39 owned or contracted parks in
Germany, Italy, Netherlands, Romania and Poland in excess of 150 MWp capacity.
Alternus works closely with both local and international specialist development
partners that each provide a constant pipeline of new projects for acquisition
by Alternus. Alternus aims to own and operate over 3.5 GWs of solar parks by the
end of 2025 and to become one of the largest pan-European IPPs by the end of the
decade.

Forward Looking Statements: Certain information contained in this letter,
including any information on the group's plans or future financial or operating
performance and other statements that express the group's management's
expectations or estimates of future performance, constitute forward-looking
statements (when used in this document, the words "anticipate", "believe",
"estimate" and "expect" and similar expressions, as they relate to the group or
its management, are intended to identify forward-looking statements). Such
statements are based on a number of estimates and assumptions that, while
considered reasonable by management at the time, are subject to significant
business, economic and competitive uncertainties. The group cautions that such
statements involve known and unknown risks, uncertainties and other factors that
may cause the actual financial results, performance or achievements of the group
to be materially different from the group's estimated future results,
performance or achievements expressed or implied by those forward-looking
statements.

www.alternusenergy.com

About Unisun Energy Holding B.V

Headquartered in Rotterdam, the Netherlands, Unisun Energy Holding BV is a
leading pan-European developer, EPC and O&M service provider of clean and
sustainable energy solutions. With a team that has collectively completed and
managed over 1 GW of energy projects in their careers to date, the company
offers strong industry knowledge, service and experience. Unisun Energy strives
to make the world of solar energy more accessible to companies with sustainable
ambitions. By applying rigorous quality control, technical design expertise and
proven project management and procurement capabilities, the company consistently
delivers successful turn-key services to its customers.

https://unisun-energy.eu