The SOLESI S.p.A. is a general construction company, which has been working for more than forty years in civil and industrial construction both in Italy and Europe. It was founded in 1979 in Syracuse and here it is still present today with its Headquarter.

Solesi SpA

Solesi has developed several branch offices for site management in Poland, France, Denmark, Belgium, Slovakia and continues to expand throughout Europe.

An impotant development in the nuclear sector saw the company engaged for Slovenské Elektrárne in the construction of Mochovce plant in Slovakia.

SOLESI S.p.A. wishes to expand its field of action by diversifying the areas of activity in which it operates. It is able to offer a complete service of planning, scheduling and realization of complex works and plants (also with the form “turnkey”) offering to the Client significant economic and organizational benefits due to the rational use of its resources.

In the last years, the company has more than doubled the value of production and it has consolidated the level reached by laying the foundations in order to have a further growth in the near future.

The Group

SOLESI S.p.A. was the first company, which became part of the actual IREM group. This latter was created by the alliance of other companies in 1979 in Syracuse. The actual group originates from the wish of IREM Group’s management to establish different companies with specialized know-how, which are headed to a single group Leader.

IREM Group provides complete Services for Planning, Supply, Construction and Maintenance of Civil and Industrial Plants and it is active in the following sectors:

  • Mechanical assemblies of chemical plants, petrochemical plants, gas plants, power plants and other industrial plants
    • Pipes laying
    • Planning, manufacturing and assembly of steel structural works
    • Planning, manufacturing and assembly of piping
    • Planning, manufacturing and assembly of Tanks, Cryogenic Tanks
    • Electrical – instrumental works
    • EPC of jackets, deck and topside for Off-Shore platforms
    • Manufacture and assembly of Pre Assembled Racks (PAR’s)
    • Manufacture and assembly of Pre Assembled Units (PAU’s)
    • Civil works for industrial plants
    • Traditional Civil Construction (Shopping Centers, Residential Buildings, Roads, Underpasses, etc.)
    • Detail engineering
    • Piping prefabrication

IREM Group operates on different types of plants: Petrochemicals Plants, Power Plants, Nuclear Power Plants, LNG Plant, Turbogas Groups, Gas and Oil Pipelines, Chemical Plant, Offshore.

IREM Group employs some thousands of people. The total capacity of the group reaches 3,500,000 man-hours per year. Below there is a scheme showing the main Group companies

IREM Group structure


Value of revenues of the last 10 years


39,3 ml


37,4 ml


27 ml


42,7 ml


68,2 ml


49,5 ml


32,6 ml


22,5 ml


26,7 ml


25,8 ml


35 ml


Solesi has a stable organizational structure, which has consolidated its staff over the years and today it employs highly qualified staff with a long experience in the field.

Solesi does not neglect the importance of renewing and developing its human patrimony with specialized, young and dynamic staff, constantly updated to be in step with new processes and new technologies.

The good execution of the work is guaranteed, in addition to the use of specialized personnel, by the use of suitable and efficient machines and equipment.

Solesi has over the years enriched its fleet of vehicles and today it has machines for ground movements, hosting vehicles, trucks and vans as well as a wide range of equipment for construction works and for the execution of mechanical and civil activities.

Special expertises

Over the years, Solesi has developed specific skills in the following activities:


Solesi S.p.A. for years it has been carrying out orders in the fire safety sector through the construction of fire protection systems for structures. The company has also decided to specialize in the application of a specific system used in environments such as refineries, petrochemical and pharmaceutical plants, nuclear and conventional plants, the Pyrocrete 241 (Click here to view the Certificate nr: IT 2016001 “Qualified as Pyrocrete 241 Product Application Company “).

Real estate management

Solesi S.p.A. has designed and built civil works starting from the purchase of the land up to the final property management, including, accurate, design, which is performed by internal resources of the technical office staff made up of engineers and architects with proven experience.

Site remediation and asbestos remediation

Solesi S.p.A. is registered in the National Register of Environmental Managers for the categories: 9 class C (remediation of polluted sites), 10A class C (remediation of goods containing asbestos bound in cementitious or resinoid matrices), 10B class C (remediation of goods containing asbestos carried out on inconsistent materials), and 5 class F (collection and transport of special hazardous waste). The company authorizations, in synergy with the Integrated Management system, allow to guarantee a rational management of waste and its safety, in compliance with the safeguarding and protection of public health, natural, environmental and landscape values, in accordance with national and community legislation.

Metal carpentry and piping

Solesi S.p.A. has been working in the field of metal carpentry for several years, specializing in the welding of steel structures and pipes on site. The company can demonstrate its technical ability in guaranteeing an optimal quality welded product thanks to the certification acquired in a voluntary regime according to ISO 3834-2 Welding of Metallic Carpentry (click here to view certificate n. SOLE2767A2002).

Industrial Constructions and Maintenance


Networks and Pipelines


Residential and Commercial Buildings




Real Estate



The SOA Certification is the mandatory certification for participation in tenders for the execution of public works contracts, or a necessary and sufficient document to prove, during the tender, the ability of a company to perform public works of works with a starting price of more than € 150,000.00. It certifies and guarantees the possession by the company of the construction sector of all the requisites foreseen by the current legislation in the context of Public Works Contracts. Thanks to the company’s extensive experience both in Italy and abroad, Solesi S.p.A. has today acquired an SOA certification that includes many categories, namely:

Categories of general works

OG 1 Civil and industrial buildings – Class VIII, over € 15,494,000
OG 3 Roads, motorways, bridges, viaducts, railways, subways, funiculars and airport runways, and related complementary works – Class V, up to euro 5,165,000
OG 6 Aqueducts, gas pipelines, oil pipelines, irrigation and evacuation works – Class VIII, over € 15,494,000
OG 9 Plants for the production of electricity – Class VI, up to € 10,329,000
OG 10 Plants for high / medium voltage transformation and for the distribution of electricity in alternating and direct current and public lighting systems – Class III bis, up to Euro 1,500,000
OG 11 Technological systems – Class V, up to 5,165,000 euros
OG 13 Naturalistic engineering works – Class III, up to € 1,033,000

Categories of specialized works

OS 1 Earthworks – Class VI, up to € 10,329,000
OS 3 Water-sanitary systems, kitchens, laundries – Class II, up to 516,000 euros
OS 6 Finishing of general works in wood, plastic, metal and glass materials-Class IV, up to 2,582,000 euros
OS 7 Finishing of general construction and technical works – Class III Bis, up to 1,500,000 euros
OS 8 Waterproofing works – Class II, up to € 516,000
OS 18-A Structural components in steel-Class V, up to 5,165,000 euros
OS 18-B Components for curtain walls-Class I, up to 258,000 euros
OS 21 Special structural works – Class IV bis, up to € 3,500,000
OS 23 Demolition of works – Class III bis, up to 1,500,000 euros
OS 24 Green and urban furniture-Class I, up to 258,000 euros
OS 26 Special flooring and superstructures-Class III, up to Euro 1,033,000
OS 28 Heating and air conditioning systems – Class II, up to 516,000 euros
OS 30 Internal electrical, telephone, radiotelephone and television systems – Class III, up to Euro 1,033,000 Click here to view the company’s latest SOA attestation.

Click here to view the company’s latest SOA certification.

Sede legale

Via Stentinello, 9 int. 13
96100 Siracusa
Tel.: 0931/751411
Fax: 0931/756944

Sede commerciale

Via Carlo De Angeli, 3
20141 Milano Tel.: 02/6694125
Fax: 02/6694145

Branch estere

Belgium Branch - Brussels
Denmark Branch - Roskilde
France Branch - Lyon
Poland Branch - Poznan
Slovakia Branch - Bratislava

Gruppo irem

Via Stentinello, 9
96100 Siracusa
Tel.: 0931/787011
Fax: 0931/756875