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Chicago is using a data-driven energy benchmarking system to monitor its buildings' energy use and emissions, helping officials make targeted improvements and boost energy efficiency. Boulder, Colo., meanwhile, has implemented America's first carbon tax, raising $1.8 million a year for energy efficiency and public transit projects.

The cost of electricity from wind farms in the U.S. dropped in 2014 to the lowest point yet, according to the Energy Department. Prices for utilities with power purchase agreements have declined two-thirds since 2009. Falling costs and continued advancements are ensuring that wind remains a reliable source of renewable energy, Energy Secretary Ernest Moniz said. The Hill (8/10), ReNews.biz (U.K.) (8/11) 

The Naval Air Station (NAS) Oceana deep energy retrofit is a four-phase endeavor that is unprecedented in both size and scope. The project - which kicked off in 2002 and is expected to be completed in 2017 - is projected to reduce energy use by over 40 percent across more than 100 retrofitted buildings, saving the naval base over $6 million in annual energy costs.

Chevron Energy Solutions will design and build a waste-to-energy plant at Broward County, Fla.'s wastewater treatment facility

Weber State University has saved $1.4 million by reducing energy consumption since 2013, following the purchase of a system enabling real-time data at the sub-meter level for its entire portfolio of energy systems and using Lucid's BuildingOS to make performance data instantly accessible.

The Boston Green Ribbon Commission reports that Boston-based hospitals reduced total energy use by 6% in 2013 compared to 2011 levels. The reduction in energy use resulted in around $11.9 million in cost savings since 2011.

The nation's largest companies are rapidly embracing renewable energy sourcing and greenhouse gas emissions reduction efforts, according to a new report from Calvert Investments, Ceres, David Gardiner & Associates, and World Wildlife Fund (WWF).

The nation's largest companies are rapidly embracing renewable energy sourcing and greenhouse gas emissions reduction efforts, according to a new report from Calvert Investments, Ceres, David Gardiner & Associates, and World Wildlife Fund (WWF). 

EU leaders have agreed to a legally binding commitment to reduce the region's greenhouse emissions by 40% by 2030 from 1990 levels. The EU also committed to increase energy efficiency and the share of energy generated from renewables. "We managed to reach a fair decision. It sets Europe on an ambitious yet cost-effective energy path," said European Council President Herman Van Rompuy.

As an ever-expanding group of U.S. businesses commit to using more renewable energy to power their operations, a new study has found that for many companies, cost savings is the single most important reason for doing so. This is according to results of the first major survey of large electricity users since President Donald Trump announced his decision to pull the U.S. out of the 2015 Paris climate agreement, conducted by SED Research. The Sept. 13 report, "Post-Paris: the State of Corporate Renewable Energy Sourcing," analyzes responses from executives at 94 companies and institutions, more than 40 of which are in the Fortune 500.

Renewable energy projects surpassed all other sources of new electricity added to the global supply last year, says a new report released this week by the International Energy Agency. In 2015, renewables made up more than half of all new installed capacity, with the greatest gains seen in onshore wind and solar. It's a development that speaks to a "transformation of global power markets,"

U.S. energy-related CO2 emissions from natural gas are expected to exceed CO2 emissions from coal by 10% by the end of 2016, according to a U.S. Energy Information Administration report.

The Energy Information Agency emphasized the growing importance of offshore wind to the US energy landscape in its year-end summary, according to this piece. The summary also touted the significance of Deepwater Wind's Block Island wind farm off of Rhode Island -- the first of its kind in the US.

Tunisia has set a goal to source 33% of its total electricity needs from renewables by 2030. Energy and Mines Minister Mongi Marzouk said Tunisia's installed renewable energy capacity would have to reach 16 gigawatts to meet that goal, requiring an investment of about $7 billion.

IKEA wants to become a net exporter of renewables by 2020 and plans to spend another $670.5 million on renewable energy development. It currently sources 53% of its total electricity needs from renewables, controlling 314 turbines and 700,000 solar panels worldwide. The company will continue to embrace energy-efficiency measures, reduce supply chain emissions and make its products more sustainable.

The cost of wind energy in the US will continue to decline over the next three to five years as the industry prepares for the wind energy Production Tax Credit to lapse, according to Pattern Energy CEO and President Mike Garland. He said that Pattern has begun retrofitting its turbines to boost performance.

HP has committed to powering its global operations with 100 percent renewable energy - and says it plans to reach the 40 percent renewable electricity mark by 2020 - because, as Nate Hurst, HP's chief sustainability and social impact officer says, "both cost-effective and low carbon sources of energy are essential to the future and the growth of HP's business."

Falling coal use in China and the US and a worldwide shift towards renewable energy have kept greenhouse gas emissions level for a second year running, one of the world's leading energy analysts has said.

America's energy economy is growing cleaner, but the country's embrace of gas and renewables is driving conventional energy giants to ship fossil fuels to buyers overseas. That might limit the climate impact of the greener U.S. energy economy, experts say. "The Obama administration wants to be seen as a climate leader, but there is no source of fossil fuel that it is prepared to leave in the ground," said Lorne Stockman of Oil Change International

Nike has opened its first water-free facility, which will end the use of water and process chemicals from fabric dyeing at its Taiwanese contract manufacturer Far Eastern New Century. The process, which Nike has dubbed ColorDry, reduces dyeing time by 40 percent, energy use by about 60 percent and the required factory footprint by 25 percent compared to traditional methods, the company says. ColorDry products will be introduced to the marketplace in early 2014

The process, which Nike has dubbed ColorDry, reduces dyeing time by 40 percent, energy use by about 60 percent and the required factory footprint by 25 percent compared to traditional methods, the company says.

The Department of Energy has made available $8 billion in loan guarantee authority to support advanced fossil energy projects that avoid, reduce or sequester greenhouse gases.