What is it?
The first definition of SHP in Brazil was presented in the Manual of Small Hydro, edited in 1982 by the consortium formed between the Ministry of Mines and Energy - MME, the National Department of Waters and Electric Power - DNAEE and Eletrobras. The manual was created by occasion of the first National Program of SHP - PNPCH.
SHP has been defined through the entrance of the DNAEE no. 109, of November 24, 1982, for the following characteristics:
* Operation in water regime of daily stabilization;
* Provision of dams and drains with maximum height of 10 m;
* System adductor just formed by channels to open sky and/or piping, not using tunnels;
* Their hydraulic structures of generation should foresee, in the maximum, a flow of 20m3/s;
* Generating units with individual potency of up to 5MW;
* Total potency of up to 10MW.
Before this, in 1984, DNAEE through the Resolution no. 125 lessened this framing and in 1987, for the DNAEE resolution no. 136, of October 06, SHP started to have only two conditions: the potency should be inferior to 10 MW, with generating units of, maximum, 5 MW.
With the creation of the National Agency of Electric Power - ANEEL, in 1996, the regulation of the energy sector started to an ANEEL attribution. Through the Resolution no. 394, of December 04, 1998, that revoked DNAEE resolutions 125 and 136 and established new criteria for the classification of Small Hydro. This way, SHP passed to be considered have the following characteristics:
* potency same or superior to 1,0 MW and equal or inferior to 30,0 MW;
* with same or inferior total area of reservoir to 3,0 km2;
* being delimited by the water quota associated to the flow of full with time of 100 year-old appeal.
In 2003 Aneel trough the Resolution 652 alters the area of the reservoir. In case the limit of 3,0 km2 is exceeded, the use will still be considered with characteristics of SHP if they be assisted at least two conditions:
that the inequation below is satisfied:
On these expression the area cannot exceed 13 km2, maximum area of must part of the reservoir of SHP in North/Northeast, defined by the maximum water level upstream of the dam. The gross head is calculated by the difference between the upstream maximum water level and downstream.
whose dimensioning, was based on other objectives that no the one of electric power generation should have that proven condition close to National Agency of Waters - ANA, to Basin Committees, to the organs of administration of water resources and environmental close to States; in agreement with their respective competences.
The manual of SHP from Eletrobras classifies SHP in accordance to the TABLE:
According to CERPCH there is a reclassification suggestion in agreement with the TABLE below: