Begin your research with the Energy Information Administration's (EIA) Annual Energy Outlook, which includes projections on factors that will shape the US energy markets through 2040. From the EIA you can find:
You can narrow down your search by energy source or topic such as
coal,
electric power,
natural gas,
petroleum, and
nuclear power.
Trade journals and associations are another great source of data and current events.
Oil & Gas Journal is a key resource for those interested in natural gas and petroleum production and it contains current events, construction projects (including pipelines and refineries) worldwide, and production statistics.
SEIA is ideal for those interested in solar power and
Wind IQ similarly is a great resource for those interested in wind power generation in the United States. Bloomberg is another source for information on energy assets.