It happens in Australia, where the manager of the South Australian State network is going to start on an experimental basis a program that provides PV system users and storage. The idea is to encourage distributed generation as an alternative to new investments on the electricity grid.
The distributed generation and in particular with the photovoltaic battery is an advantageous solution not only for users and climate, but also for the electrical system in general and for the network. For network managers, it may even be economically advantageous to provide its users with photovoltaic systems and storage systems and in this way to avoid having to invest in new cables and pylons.
This is the reason why SA Power Networks (SAPN), the grid operator of South Australia, from June will provide customers of photovoltaic kit + bargain prices storage or with a rent subsidized. He anticipated the Australian head RenewEconomy.
The program really start with a relatively small trial, approximately 100 kits installed in Salisbury, a small suburb north of Adelaide: the network operator’s bet is that – compared with an expected increase in electricity demand for the next five years – the spread of PV with battery in the town will avoid having to invest to adapt local network.
“Over the next five years we should act to address a localized increase in demand in Salisbury – says Paul Roberts, for institutional relations of SAPN – we want to work with users to avoid having to invest in new cables and pylons. Rather than building a new line, we want to try to tap into the distributed generation from PV. “
So in Australia, one of the most vibrant markets for PV with storage, it is beginning to be clear that the value of distributed generation can have for the electrical system. Value which by the way does not stop the network investments that manages to avoid. To return to the Italian situation, a study commissioned by ANIE-Energy in Business Integration Partners (released in autumn 2013) calculates that over 500 million Euros a year, the net benefits that a massive deployment of storage systems for photovoltaics would lead to electric system.
For example (see table below), in addition to the benefits of the distribution network costs – about 72.8 million euro the year – the storage diffusion would lead to savings that would result from the reduction of the excess energy demand (overgeneration ), estimated at 234.4 million euro, well 147.1 million € would instead saved with the reduction of thermal capacity.