Sen. John McCain, in Tucson, accuses the EPA of regulatory abuse.
Massive wind turbines start spinning near Willcox.
Power-line backers to alter route to avoid missile range
Energy business can be complex as we balance sustainability, reliability and affordability.
Nearly 30 customers still remain without electricity in the Flowing Wells neighborhood.
Clean energy production is not just for those who can afford “eco-friendly.”
County supervisors approved a $22 million package of contracts Tuesday to buy solar power that is expected to save $4.5 million over 20 years.
Opinions on Education Board nominee, UA church stories, scientists and public records.
Students take next steps toward careers in energy, mechanics and firefighting.
Some Southern Arizona communities will face higher bills.
TEP would own panels, participants would get 25-year freeze on rates.
Readers thoughts on Steve Kozachik, mine land swap, CIA report, TEP employees.
Tucson Electric will match donations during one-day event this Saturday.
No major changes expected but customers will soon see small billing credits
State regulators to decide on proposed buyout of TEP parent on Tuesday.
The Arizona Corporation Commission will hold public hearings this week in Tucson on the proposed $4.3 billion buyout of Tucson Electric Power Co.’s parent company, UNS Energy Corp., by major Canadian utility operator Fortis Inc.
The Southwest's power grid could become more vulnerable to climate change over the coming decades, says a new report led by University of Arizona researchers.
Like most facilities of its type, it doesn't look like much on the outside. Or on the inside either, for that matter.
Berne Hotchkiss of Rinderknecht Association cleans the floor of an Involta data center. Rinderknecht did reconstruction work on the 38,000-square-foot building, which was purchased from Aurora Optical Inc.