From Grid-parity to Off-Grid


Technologies and opportunity of Stored Energy systems

With the End of incentives era, the development of PV in Italy is made possible by self-consumption and the ability to store energy during the day to use it again when the sun has set, using the mechanism of the exchange in place to manage temporary surpluses and deficits. As in other European countries, led by Germany, pushing this model, by encouraging the installation of storage systems for residential, Italy, the market is still waiting for a decision of the Authority which should clarify some critical aspects for users , starting with the storage compatibility with the incentive mechanism. Waiting for the resolution, the consultation document circulating among providers (DCO 613/2013 / R / EEL) clarifies some controversial points, providing a rough guide as to the compatibility of the storage systems with photovoltaic incentives.


Towards secessionism energy

A point in favor of the combination PV + accumulation is the desire to achieve energy self-sufficiency and be able to make it independent from the network. This is especially true in Germany, where for some years now, not only individuals but also entire communities have decided to focus on energy independence giving to the public network (except in emergencies). To achieve this need management technologies of renewable energy sources and storage more reliable, durable and less expensive than those available today. For now, off-grid PV systems remain a tiny niche in Europe with a market share of less than 1% of total capacity, while in other parts of the world the incidence is higher, especially when access to the electricity grid is difficult. It 's the case of Australia, India and parts of South America, where it is developing a hybrid system based on micro-grid. But even in the most advanced countries, there is a segment of the population served by stand-alone photovoltaic systems: the United States, for example, the installed capacity of photovoltaic off-grid reached a peak in 2009 of 10%.

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