1. Italian Regulatory Authority for Electricity and Gas. Monitoraggio dello sviluppo degli impianti di generazione distribuita in Italia per l’anno 2009 ed analisi dei possibili effetti della generazione distribuita sul sistema elettrico nazionale. Delibera ARG/elt 223/10. [accessed September 2011].
2. Observ’ER. Observatoire des energies renouvelables, Photovoltaic Barometer; 2011. [accessed September 2011].
3. Observ’ER. Observatoire des energies renouvelables, Wind Power Barometer; 2011. [accessed September 2011].
4. Distributed energy resources and benefits to the environment;Akorede;Renew Sustain Energy Rev,2010
5. Energy storage for mitigating the variability of renewable electricity sources: an updated review;Beaudin;Energy Sustain Dev,2010