Studio Pietrangeli

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Studio Pietrangeli Consulting Engineers Studio Pietrangeli (SP) was founded in 1964 by Eng. and large hydraulic works (water supply systems, irrigation plants, ports, etc).

Giorgio Pietrangeli to provide specialised engineering services for large dams and hydropower plants. SERVICES
The firm’s services cover all phases of a project and range from conception to monitoring during operation, including all the design activities, specialised studies, investigations, supervision of the works, and so on. Although the core activities concentrate on dams and hydropower plants, Studio Pietrangeli is also specialised in large civil structures (tunnels, roads, etc.) ORGANIZATION
Studio Pietrangeli’s staff of approximately 80 people includes internationally renowned experts, engineers and other professional and technical staff specialised in the various project sectors. While SP’s head office is in Rome, the firm also has branches in Sierra Leone, Ecuador, Tanzania and Ethiopia and elsewhere sets up its own temporary premises and/or makes use of local partners’ facilities. EXPERIENCE
Our extraordinary domestic and international experience confirms the outstanding quality of our work. Studio Pietrangeli has successfully completed the design of over 160 dams, 60 hydropower plants, 250 km of hydraulic tunnels plus several irrigation, water supply and sewage treatment plants. Alongside its more traditional engineering schemes, Studio Pietrangeli, from its beginnings, has always proposed innovative solutions to complex technical problems. EXCELLENCE
Studio Pietrangeli is responsible for the engineering of several important international works recently completed or under construction. Those recently completed include Beles (460 MW), Gibe II (420 MW) and Bumbuna 1st Phase (50 MW), while our two record-breaking projects under construction are Gibe III (world's highest RCC dam, 240 m) and Grand Ethiopian Renaissance dam (6000 MW). Several firm's projects, given their innovative solutions and importance, have been written about and/or cited in prestigious magazines such as National Geographic, International Water Power and The Economist, cited in encyclopedias (Wikipedia) and used to illustrate banknotes (Sierra Leone), rechargeable phone card and bound issues (Ethiopia). FAST TRACK
Nowadays, many of the Studio Pietrangeli's projects are conceived in only a few weeks through the adoption of so-called “fast track” techniques using satellite imagery, helicopter surveys, surface geotechnical investigations, with the result that several of our largest hydropower projects have been implemented in only four years from conception to operation. WORKING CONDITIONS
Studio Pietrangeli's specialists are used to working in all types of conditions, from roughing it in field camps in African forests to attending official meetings with the highest echelons of government, industry and finance. Their passion for their work never changes. PRESENTATION
Our engineers are accustomed to presenting our projects to clients of all types. We have even created simple effective presentations using cartoons and laymen's terms. LOCAL PARTNER
We often collaborate with local firms and specialists, entrusting them with site activities under the supervision of our experts. Local firms and contractors looking for an international consultant to tender for dams, hydropower or hydraulic engineering are welcome to contact us. We can guarantee outstanding curriculum and technical quality together with competitive prices.

Studio Pietrangeli’s first project in MicronesiaStudio Pietrangeli has been awarded a new consultancy assignment in Pohn...
15/10/2026

Studio Pietrangeli’s first project in Micronesia

Studio Pietrangeli has been awarded a new consultancy assignment in Pohnpei, Federated States of Micronesia, our first project in the country.
The consultancy is part of the Clean Energy Project and focuses on hydropower development along the Lehnmesi River in Pohnpei, aiming to increase renewable energy production and reduce the use of fossil fuels.

As part of the initial activities, our team travelled to Pohnpei to meet the FSM Department of Resources and Development and relevant stakeholders.

We are proud to bring our hydropower expertise to Micronesia and contribute to a more sustainable future for the FSM.

Studio Pietrangeli in India for the Zungki and Lower Tizu hydropower Projects.Studio Pietrangeli, in association with DM...
06/10/2026

Studio Pietrangeli in India for the Zungki and Lower Tizu hydropower Projects.

Studio Pietrangeli, in association with DMR Hydroengineering & Infrastructures Ltd., has started activities in Nagaland, India, following the recent award of the consultancy assignment for the 24 MW Zungki and 42 MW Lower Tizu Hydropower Projects.

As part of the initial project activities, Studio Pietrangeli and DMR team recently carried out their first site mission in Nagaland.

Studio Pietrangeli and DMR are pleased to bring their expertise to this important assignment and look forward to working closely with ADB, local institutions and project stakeholders throughout the next stages of the project.

Studio Pietrangeli in Brazzaville for the SAEP – DJOUÉ Water Supply ProjectStudio Pietrangeli, in partnership with ACEA ...
14/05/2026

Studio Pietrangeli in Brazzaville for the SAEP – DJOUÉ Water Supply Project
Studio Pietrangeli, in partnership with ACEA Infrastrutture, took part in the first Italian field mission in Brazzaville, Republic of Congo, carried out within the scope of the SAEP – Djoué project, aimed at strengthening the drinking water supply system of the capital.
The project is promoted by the UNDP – United Nations Development Programme.

The mission, held in early April 2026, focused on field data collection, site visits to key water supply infrastructure, and technical meetings with local institutions and project stakeholders.

Studio Pietrangeli participated together with Acea Infrastructure, local sub-consultants SBV Consulting and Geomossala, and representatives from the UNDP Rome Centre.

Stay tuned for more updates on this project!

10/09/2025

A highlight from the GERD inauguration
At the ceremony, Pietro Salini, CEO of Webuild, expressed his heartfelt thanks to Giorgio Pietrangeli, the mind behind the dam’s design.
A tribute that fills us with pride and showcases the strength of Italian engineering in one of the world’s largest hydropower projects.
🎥 Watch the clip here!

A strategic role for SP in NEOM'S DEVELOPMENTStudio Pietrangeli is involved in a groundbreaking infrastructure project i...
07/08/2025

A strategic role for SP in NEOM'S DEVELOPMENT
Studio Pietrangeli is involved in a groundbreaking infrastructure project in the mountains of Saudi Arabia on behalf of WeBuild. This visionary project will transform a desert area into a futuristic destination with iconic architecture, three dams, and a 2.8-kilometer-long freshwater lake.
The RCC (Roller Compacted Concrete) main dam will be 145 meters high and 475 meters long. The second dam will also be made of RCC, while the third will be a rockfill dam. The artificial lake will cover 1.5 square kilometers and feature an island for botanical diving and walking.
Currently, a dedicated team from Studio Pietrangeli is actively involved in geological mapping, foundation treatment, geotechnical investigations, and support for the excavation of the main dam, knoll spillway, enchanted forest, and rockfill dam. This groundwork is essential for the project's success.

Stay tuned for more updates on this ambitious venture!

Studio Pietrangeli had the honor of meeting King Mswati III of eSwatini during his visit to the Eternal City. Founder an...
18/10/2024

Studio Pietrangeli had the honor of meeting King Mswati III of eSwatini during his visit to the Eternal City.
Founder and Managing Director Giorgio Pietrangeli, together with Eng. Antonio Pietrangeli and Eng. Antonio Brasca, presented a brief overview of the significant experience gained by the Studio Pietrangeli team, both globally and in eSwatini in the field of dams, hydropower and irrigation projects.
This meeting highlighted our ongoing commitment to excellence and innovation in engineering, including our ongoing projects in eSwatini, and we are excited about the possible future collaborations and developments that may arise in the kingdom.

FOUNDATION STONE LAID FOR 2880 MW DIBANG PROJECT IN INDIANarenda Modi, India’s Prime Minister, laid the foundation stone...
08/07/2024

FOUNDATION STONE LAID FOR 2880 MW DIBANG PROJECT IN INDIA
Narenda Modi, India’s Prime Minister, laid the foundation stone of the 2880 MW Dibang hydroelectric project, which will be the Indian highest dam by 2032.
Studio Pietrangeli, in collaboration with SMEC India, is leading the design and construction supervision, appointed by NHPC.

CONSTRUCTION OF THE NEW BOTTOM OUTLET OF THE POZZILLO DAMWe are pleased to announce that ENEL SPA has appointed SP to pr...
04/03/2024

CONSTRUCTION OF THE NEW BOTTOM OUTLET OF THE POZZILLO DAM
We are pleased to announce that ENEL SPA has appointed SP to provide technical assistance for the Construction Supervision, Health and Safety during the construction of the new Bottom Outlet of Pozzillo Dam in Sicily, Italy.
The dam's new bottom outlet will accommodate 120 Mmc of water, currently reduced to 60 Mmc.

We are pleased to say that  National Hydroelectric Power Corporation (NHPC) has appointed Studio Pietrangeli (with Smec ...
16/01/2024

We are pleased to say that National Hydroelectric Power Corporation (NHPC) has appointed Studio Pietrangeli (with Smec India) for the design and supervision of construction of Dibang Dam, in the Himalayan mountains in Arunachal Pradesh.
The dam is a gravity RCC structure, 278 m high, that will become the world’s highest and largest RCC dam, once completed.

EEC, the Eswatini Electricity Company, has appointed SP to provide Technical Assistance for the Development and Construc...
11/12/2023

EEC, the Eswatini Electricity Company, has appointed SP to provide Technical Assistance for the Development and Construction of the Maguga Hydropower Projects, which includes the Maguga HPP expansion (30 mw), the new Lower Maguga Scheme (23 MW) and the new Mini-Hydro (1.2 MW).

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