Adding Hydro to a Non-Powered Dam in Romania
Adding generating facilities to non-powered dams in Romania can
help maximize the country’s renewable energy potential. Tis article
presents a case study of development of one such facility, 2.663-MW
By Valentin Ispir, Radu Sarghiuta, Daniel Gaftoi and Catalin Popescu
The majority of the dams in the world o not have a hydropower component, and the addition of hydropower capabilities at non-powered dams can ofer a way
to create new energy resources with minimal
Tis article discusses the 2.663-
MW small hydropower project
added to the Zavoiul Orbului Dam
on the Dambovita River in Romania.
Te plant consists of two banks of six
Archimedes screw turbines. Te project
is adjacent to the dam spillway and the water
intake is cut into the embankment dam body.
Important topics discussed include why
Archimedes screw technology was chosen for
this site, how the turbines were incorporated
into the existing site confguration and how
the facility will be operated and controlled.
Adding small hydro
To help overcome a serious challenge
in the European Union — climate
change due to CO2 emissions —
a series of proposed directions
were made, including increasing
energy production from renewable
sources. Directive 2009/28/EC unifes
provisions for the electric energy, thermal
energy and transport energy produced from
renewable sources. Te main objectives are to
increase the share of renewable energy in fnal
energy consumption to 20% and to increase
the share of renewable energy sources in the
fuel used by the transport sector by 10%, both
by 2020. According to the frst annex of the
directive, Romania’s target by 2020 is 24%.
For southeast European countries,
including Romania, hydropower is the most
important source for renewable electricity gen-
eration. However, the potential for hydropower
sector development in the future is hampered
due to difcult approval of new projects and
allocation of leases and permissions.
Tree viable alternatives are to upgrade the
capacity of existing turbines, add new turbines
at existing facilities or add hydropower gen-
eration to non-powered dams.
This conceptual image is a downstream
view of Zavoiul Orbului Dam and existing
spillway that will receive turbines.