Costs of small scale batteries are dropping at a spectacular rate. One of many articles providing insight in this solar panel type boom.
Globally, the cost of government subsidies for fossil fuels increased from $311 billion in 2009 to $544 billion in 2012, the IEA estimates. Once lost tax revenues are included, this figure rises to around $2 trillion, equal to over 8% of government revenues, according to a recent IMF report
An interesting article on Googles longer term view on how home appliances might someday work together. Gathering information in a smart grid at home, optimizing energy usage