Two of the major challenges to the economics of dispatching renewable power using smart grids are:

1) Competition from the conventional and cheaper power from natural gas fired power plants and the non-conventional natural gas from fracking.

2) Renewable power sources (wind and solar PV) suffer from the intermittency issue and, thus, require energy storage technologies. The latter are not cheap.

Because of the aforementioned reasons, renewable power receive government subsidies and without these subsidies they would have a negative net present value (NPV).

Hope this helps answer your question.

Professor Yehia Khalil, Yale University, USA

Fellow of the University of Oxford, UK

I recommend yo a rencent thesis about this topic:

https://idus.us.es/xmlui/handle/11441/32946

1. Voltage synchronization

2. Frequency mismatching

3. Internet Security issues

4. Cloud Storage

Dear Sir

Please consider following points

* Storage system for both heating, cooling and electrical

* Finding appropiate formula for management system

* Initial cost of system

*Capacity factor of system ratio of mean average usage of system to nominal capacity