INFRASTRUCTURE Press Release

HOCHTIEF to build large tunnel project in

Tirol for EUR 132 million

"Triebwasserweg Maria Stein" tunnel is most significant single contract for hydroelectric power station "Gemeinschaftskraftwerk Inn" Communications Contact: Stefan Hannen

Opernplatz 2
45128 Essen, Germany
Tel.: +49 201 824-2960
Fax: +49 201 824-92960 stefan.hannen@hochtief.de

From Gemeinschaftskraftwerk Inn GmbH-consisting of Tiroler Wasserkraft AG, Engadiner Kraftwerke AG and Verbund AG-HOCHTIEF Solutions was awarded the contract for constructing the "Triebwasserweg Maria Stein" tunnel. The project is a key element of the "Gemeinschaftkraftwerk Inn" power station. The contract value is EUR 132 million. The construction lot comprises driving of a more than 22-kilometer-long pressure tunnel and is the biggest and most significant one of the three construction lots of the hydroelectric power station on the River Inn. The tunnel will be completed in mid-2018.

Wilfried Rammler, General Manager of HOCHTIEF Infrastructure: "We are happy to have won another large-scale contract in the Austrian market. This underscores our competence in the construction of sustainable energy infrastructure in Europe."

The pressure tunnel with a total length of 22.6 kilometers and a diameter of 6.5 meters will run underground from the reservoir in Ovella to the powerhouse in Prutz. HOCHTIEF will drive the pressure tunnel with two hard rock double-shield tunnel boring machines. The excavation material will be stored near the construction site in order to reduce site traffic to a necessary minimum. The tunnel will be lined with prefabricated concrete lining segments. These reinforced concrete elements will be produced locally in a field factory. In future, the water will be channeled through the tunnel to the powerhouse in Prutz where, once the structure is completed, environmentally friendly electrical power will be generated

for more than 100,000 households.

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07/21/2014

HOCHTIEF Infrastructure GmbH, Sitz der Gesellschaft: Essen, Registergericht: Essen HRB 25021, USt-IdNR. DE 292 910 341, StNr. 5112/5710/0012

Geschäftsführung: Wilfried Rammler

INFRASTRUCTURE Communications

HOCHTIEF is one of the most international construction groups worldwide. The company delivers complex infrastructure projects, in some cases on the basis of concession models. The Group operates in the transportation infrastructure, energy infrastructure and social/urban infrastructure segments as well as in the contract mining business. With nearly 81,000 employees and a sales volume of more than EUR 25 billion in FY

2013, HOCHTIEF is represented in all the world's major markets. With its subsidiary Leighton, the Group is market leader in Australia. In the USA, the biggest construction market in the world, HOCHTIEF is the No. 1 general builder via its subsidiary Turner and, with Group company Flatiron, ranks among the most important players in the field of transportation infrastructure construction. Because of its engagement for sustainability, HOCHTIEF has been listed in the Dow Jones Sustainability Indexes since 2006. Further information is available at www.hochtief.com/press.
HOCHTIEF Solutions consolidates the core business of the HOCHTIEF Group in Europe and in selected regions worldwide. The company finances, plans, develops, builds, operates and manages real estate and infrastructure facilities. HOCHTIEF Solutions is the management company of the Group's Europe division. In many regions and segments, the company is a market and innovation leader. Further information is available at www.hochtief-solutions.com.

HOCHTIEF Infrastructure delivers transportation and energy infrastructure projects in Europe and in selected regions worldwide. The subsidiary of HOCHTIEF Solutions offers services for all realization phases of bridges, roads, tunnels, harbors, rail links, airports and urban infrastructure through to facilities for the generation of conventional and renewable energy. In addition to office locations in Germany and Europe, the company has regional units in the Middle East, South Africa and Latin America.

Further information is available at www.hochtief-infrastructure.com
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07/21/2014

HOCHTIEF Infrastructure GmbH, Sitz der Gesellschaft: Essen, Registergericht: Essen HRB 25021, USt-IdNR. DE 292 910 341, StNr. 5112/5710/0012

Geschäftsführung: Wilfried Rammler

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