Leading Dam and
Hydropower Engineers

SP has provided engineering services in more than 30 countries
More than 200 dams and 100 hydropower plants designed
Innovative ideas, cutting edge technologies, world records


About us

Our best projects on the world-wide magazines


All engineering and consultancy services from conceptual scheme to construction details.

All types of studies: engineering, geological, environmental, financial, etc.

All the phases: from the idea to monitoring of operation.


Dams & Hydro of all types and sizes,
from micro to huge.

Gerd 6000 MW Africa’s largest hydro
Gibe III 250 m, World’s Highest RCC
Batoka dam 180 m on the mighty Zambezi river
10 micro hydro in the beautiful Jamaica
and many others.


Family-owned and managed, since 1964.

 80 experts and specialists,
in all the fields of engineering
(hydraulic, geotechnical, structural, electrical, mechanical, etc.),
geology, architecture, economy, environment
and many others.



The videos of our projects are the company’s business card

Grand Ethiopian Renaissance

Low Block Flood - August 2016

Gibe III

Dam Story


Innovative, Tailored, Fast Track.

SP has always been involved in complex engineering projects
We have invented innovative ad-hoc solutions using cutting edge technologies
We use “fast track” techniques, a pioneering approach to complete our projects in short time

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Drop on in

Studio Ing. G. Pietrangeli S.r.l.
Via Cicerone, 28
00193 Rome - Italy

Give us a call

Office: (+39) 06 3210880
Fax: (+39) 06 3227276