What's New

Short-Term Energy Outlook ›

July 8

Gulf of Mexico Fact Sheet ›

July 1

Petroleum Marketing Monthly  ›

July 1

More ›

Coming Up

U.S. Fuel Ethanol Plant Production Capacity ›
OPEC Revenue Fact Sheet ›
Iran Country Analysis Brief ›
More ›

Posted July 11, 2014Today in Energy

Fuel economy improvements show diminishing returns in fuel savings ›

Fuel costs, which depend on vehicle fuel economy, miles driven, and fuel price, are an important factor in vehicle purchasing decisions. However, fuel economy improvement exhibits diminishing returns in fuel savings. For example, switching from a 10-mile-per-gallon (mpg) vehicle to 15 mpg saves more fuel and greater fuel cost savings than switching from a 25 mpg vehicle to 75 mpg. More

Source: EIA, Annual Energy Outlook 2014


American Energy Data Challenge

American Energy Data Challenge ›

Contest #3 Open Data by Design. Prizes for designs using the featured data. Submissions due July 18. Public voting July 22–29.

2014 EIA Conference

See the agenda ›

Speakers include Daniel Yergin, Maria van der Hoeven, Fred Upton, Eric Slifka, José Manuel Carrera Panizzo, and more.

U.S. Energy Mapping System

U.S. Energy Mapping System ›

Rankings, layers of energy information, and state comparisons

Data Highlights

WTI crude oil futures price

7/10/2014: $102.93/bbl

down$1.13 from week earlier
down$3.59 from year earlier

Natural gas futures price

7/10/2014: $4.120/mmBtu

down$0.286 from week earlier
up$0.440 from year earlier

Weekly coal production

7/5/2014: 18.094 million tons

down1.258 million tons from week earlier
up0.146 million tons from year earlier

Natural gas inventories

7/4/2014: 2,022 Bcf

up93 Bcf from week earlier
down653 Bcf from year earlier

Crude oil inventories

7/4/2014: 382.6 mmbbl

down2.4 mmbbl from week earlier
up8.6 mmbbl from year earlier


Short-Term Energy Outlook

Annual Energy Outlook

International Energy Outlook

Learn About Energy

Energy Explained

Energy in Brief

Frequently Asked Questions

Small image of Energy Kids banner with host Energy Ant