Question: What is the United States energy market?
About the article "United States", section "Energy".

Candidate passages:
The National Energy Modeling System (NEMS) is an economic and energy model of United States energy markets created at the U.S. Department of Energy, Energy Information Administration.
NEMS projects the production, consumption, conversion, import, and pricing of energy.
The model relies on assumptions for economic variables, including world energy market interactions, resource availability (which influences costs), technological choice and characteristics, and demographics. 
Open Energy Information (OpenEI) is a website for policy makers, researchers, technology investors, venture capitalists, and market professionals with energy data, information, analyses, tools, images, maps, and other resources.
It was established by the United States Department of Energy on December 9, 2009. 
In recent years, there has been a movement towards renewable and sustainable energy in the United States.
This has been caused by many factors, including the threat of global warming, cost, government funding, tax incentives, and potential profits in the energy market of the United States.
According to the most recent projections by the EIA out to the year 2040, the renewable energy industry will be growing from providing 13% of the power in the year 2011 to 16% in 2040.
This is equivalent to 32% of the overall growth during this time period.
This large increase has the potential to be very lucrative for companies wishing to tap into the renewable energy market in the United States.
This movement towards renewable energy has also been affected by the stability of the global market.
Recent economic instability in countries in the Middle East and elsewhere has driven American companies to further develop American dependence on foreign sources of energy, such as oil.
The long term projections by the United States Energy Information Administration for renewable energy capacity in the United States is also sensitive to factors such as the cost of domestic oil and natural gas production, prices, and availability. 
The U.S. DOE's International Storage Database is increasingly becoming a market research resource that has been quoted by legislative bodies, opening testimonies, and as a citation source for reports related to energy storage. 
Connecticut, Pennsylvania, and Nevada have adopted Energy Efficiency Portfolio Standards that require regulated utilities to meet a certain percentage of their projected power needs through energy efficiency.
Utilities must meet their obligations by either reducing their consumers’ energy usage, or by purchasing energy efficiency certificates (white certificates).
More states are expected to follow in the near future.
There is also a voluntary market where large corporations are purchasing energy efficiency certificates as a way of meeting their corporate commitments to reduce their carbon footprints.
Sterling Planet (http://www.sterlingplanet.com/), a market maker in renewable energy certificates (RECs) is also making a market for voluntary purchases of White Tags.
Sterling Planet helped develop Connecticut's Energy Efficiency Standard and is presently the only company actively involved in this space.
The white certificate concept is an offshoot of the more mature renewable energy credit or "green tag" trading.
The market for white certificates is expected to grow larger than the green tag market because it requires less government approval and expense to install energy efficiency measures in factories and commercial buildings than to construct most renewable energy projects.
One issue arising is how to avoid allowing customers to "double dip" in white tag and other incentive programs for energy efficiency, such as ISO New England’s forward capacity market and the Regional Greenhouse Gas Initiative3.