Much of Sempra's trading consists in providing price hedges to industrial customers to smooth their costs of gas, electricity, steel, zinc or anything else.

FORBES: Gas Guzzler

Grid storage is seen as helpful to smooth the sudden ups and downs in electricity supplies from wind and solar generation.

WSJ: U.S. Battery Makers Regroup as Electric-Car Market Proves Rough

It works to smooth power demand on the grid and effectively lowers electricity costs to the customer.

FORBES: GE Partners With Tiny Arista Power To Dominate Huge Energy-Storage Market

It works to smooth power demand on the grid and effectively lowers electricity costs to the customer, says Schmitz, who was formerly Chief Operating Officer of UltraLife (ULBI), a worldwide designer and manufacrturer of power and communictions systems.

FORBES: Power Opportunity for GE, et al: How To Store Wind/Solar Renewable Energy