The Utility Dive Power & Gas Index tracks the interdependence of wholesale electricity and natural gas markets throughout the continental United States, offering a look at how gas prices affect the price utilities, and ultimately consumers, pay for electricity. 

The Index is updated monthly when new gas and power market data are made available from the U.S. Energy Information Administration. For deeper analysis of the power-gas nexus, check out other Utility Dive features:

Jan. 25: Power & Gas Index: 8 regional charts show the link between gas and electricity markets

Feb. 17: What growing US natural gas exports could mean for utilities

April 20: East Coast snowstorm spikes prices; Texas, California generators under pressure

May 22: Enjoy the shoulder season: Natural gas prices are set to rise

Charts reflect EIA data thru April 30, 2017.

National trends

The Power & Gas Index compares power and gas data from eight sets of market hubs, including two in California:

The All Regions Power Index chart reflects electricity prices on their trade dates throughout the nation:

Midwest

Midwest energy prices reflect trades for Indiana Hub RT Peak (electricity) Chicago Citygates (gas).

Texas​

Texas energy prices reflect trades for ERCOT North 345KV Peak (electricity) and Henry Hub (gas):

Northwest

Northwest energy prices reflect trades for Mid C Peak (electricity) and Malin (gas):

PJM

PJM energy prices reflect trades for PJM WH Real Time Peak (electricity) and TETCO-M3 (gas):

California

Northern California energy prices reflect trades for NP15 EZ Gen DA LMP Peak (electricity) and PG&E - Citygate (gas)

Southern California energy prices reflect trades for SP15 EZ Gen DA LMP Peak (electricity) and Socal-Citygate (gas):

Southwest

Southwest energy prices reflect trades for Palo Verde Peak (electricity) and Socal-Ehrenberg (gas):

New England

New England energy prices reflect trades for Nepool MH DA LMP Peak (electricity) and Algonquin Citygates (gas):