Renewables

Utility-scale energy storage in the form of pumped water storage has a long history. One of the oldest U.S. plants found itself in need of an upgrade after 40 years of service. Having the right equipment for the job is proving to be essential. With the current power market challenges and increasing amounts of variable […]

Hydropower is booming, but unless you live in China, Latin America, or Africa, you may have missed it. Global installed capacity of hydroelectric generation has grown by more than 25% over the past decade

Kuwait’s government in August approved the construction of several power plants and desalination facilities to boost its capacity by 3,580 MW. Like its oil- and gas-rich neighbors in the Gulf Cooperation Council region, Kuwait is seeing a power shortage owing to its growing population and economy. With only five power plants, the country has experienced […]

One of the world’s largest facilities that harvests energy from ocean temperature gradients began operation this August in Hawaii. The 100-kW ocean thermal energy conversion (OTEC) facility’s inauguration at the Natural Energy Laboratory of Hawaii Authority (NELHA) marks a significant milestone for the technology (Figure 1). One key aspect being tested at the facility is […]

In the UK this August, two massive offshore wind developments were thrown into tumult. A consortium that secured the UK government’s approval in early August to build an array of offshore wind farms in the Dogger Bank development off the east coast of Yorkshire said it would proceed with only four projects instead of the […]

Replacing blades on a wind turbine is not a simple task. Blades range from 40 to 60 meters in length and can weigh 16 tons or more. Combined with hub heights that can exceed 100 meters and locations that are, by definition, subject to prevailing winds, replacing blades becomes challenging. Add in the cost of […]

Rooftops with arrays of tiny wind-powered microturbines and hydro microturbines generating power as water flows through municipal drinking water systems or the outflow of municipal sewage treatment systems?  They’re real. For many in the electric power business, the term “microturbine” conjures up images of small, gas-fired machines, a fad a decade ago that never caught […]

An old saying often attributed to Mark Twain is, “Figures don’t lie, but liars figure.” Listening to the conflicting information presented by a variety of senators during a hearing on Capitol Hill Sept. 29, one has to wonder if Twain was covering a Senate hearing when he penned the phrase. The only witness at the […]

In its latest effort to ram down carbon emissions and address air pollution, China will strictly limit public financing to coal and other high-carbon projects and begin a national program in 2017 to cap and trade greenhouse gas emissions.  The country’s emission trading system will cover power generation, steel, cement, and other key sectors. China […]

NRG Energy has embarked on a “reset” that will see a separation of its core distributed generation and fossil fuel businesses.  The company, headquartered in Princeton, N.J., wants to “simplify” NRG Group to cut down expenses and debt. In a transition that will begin now and be fully effective on Jan. 1, 2016, it will separate […]