Plus electricity cannot be stored.
FYI:
Electricity can be stored,
1. Batteries
2. Flywheels
3. Gravitational potential energy using a pumped hydroelectric facility.
4. Compressed Air Energy Storage
5. Rail Energy Storage
6. Molten Salt Storage
7. Thermal Energy Storage
Reference: http://discovermagazine.com/2015/july-aug/26-power-stash
Hmm right but if we use PoS, and miners are out of network, will it hamper the process