Environmental changes in large river basins are subject to forces external to the water and to biological issues. Before 1960, the Plata River Basin was almost undeveloped. The regulation of the Parana for hydroelectricity has been increasing since the early 1970s. Water in reservoirs of the upper Parana Basin currently comprises more than 70 percent of the mean annual discharge at its confluen...

Environmental degradation is widespread in Northeast Asia, particularly atmospheric pollution. Enhanced electricity grid interconnections in Northeast Asia offer two distinct kinds of benefits: (a) the spatial separation of generating source and point of electricity use, and (b) the substitution of cleaner fuels for coal. The first of these factors offers real potential. In most of the region, ...

Much electrical generation in the developed world is now conducted within deregulated energy markets, providing new layers of uncertainty for human controllers and new challenges for analysts wishing to understand and support cognitive work. In this paper we outline some of the challenges encountered when attempting to describe the work domain of hydroelectric power generation in a dynamic dere...

A weather-driven model is used to investigate the requirements for backup generation (annual energy, power capacity and flexibility) in a system with different penetrations of wind, solar photovoltaics, hydroelectricity. The impact interannual variability assessed by using 26 years weather data. flexibility needed found be higher as penetration increases since ramps caused sunrises sunsets are ...

Barra Bonita reservoir is located in the Tietê River Basin - São Paulo state - 22 degrees 29' to 22 degrees 44' S and 48 degrees 10 degrees W and it is the first of a series of six large reservoirs in this river. Built up in 1963 with the aim to produce hydroelectricity this reservoir is utilized for several activities such as fish production, irrigation, navigation, tourism and recreation, bes...