While we can’t and don’t endorse specific apps, below are just a few examples of government, citizen, and business tools that: use open government data from the United States; are accessible, vetted, and available; and are, for the majority, free and do not require registration to use. Submit Energy application suggestions at Contact Energy.
For more examples of energy applications made with open government data see OpenEI – Energy Apps Catalog and Data.gov/applications.

Petroleum Reduction Planning Tool
Strategic planning application for reducing petroleum usage through alternative vehicles, fuels, and idling reduction.

EnergyIQ
Benchmarking application to compare building energy performance to comparable building classes.Open Government Data Used: Energy and Consumption Efficiency Data and Statistics

Alternative Fueling Station Locator
Find alternative fueling stations near an address or ZIP code or along a route in the United States.
Open Government Data Used: Department of Energy – Alternative Fuels Data Center

Home Energy Saver
Interactive application to estimate residential energy use and plan home energy efficiency upgrades.