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Blade Maintenance Strategies
The North American wind turbine fleet is aging. According to Dan Shreve at MAKE Consulting, AWEA’s US Wind Industry Fourth Quarter 2014 Market Report estimates approximately 45GW of wind turb....

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The Georgia Mountain Community Wind farm (GMCW) announced that its annual energy production...

Renewable Energy Group, Inc. announced that it has signed an asset purchase agreement with...

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Blade Maintenance Strategies
The North American wind turbine fleet is aging. According to Dan Shreve at MAKE Consulting, AWEA’s US Wind Industry Fourth Quarter 2014 Market Report estimates approximately 45GW of wind turbine capacity in the Americas will be 10 years or older by the year 2020.   Original equipment manufacturers (OEMs) and independent service providers (ISPs) typically focus on common failu....
Despite the deceptively simple design of a wind....
Large-scale Condition Monitoring System (CMS) r....
Every day of downtime at a wind turbine is lost....
Introduction A common complaint levied agai....
Drones are a hot topic in wind right now. They&....

Are the Renewable Energy Goals in the US EPA’s Clean Power Plan Realistic?
The Obama Administration's recently proposed Clean Power Plan envisions renewable energy technologies such as biomass, geothermal, hydropower, solar, and wind providing 28% of U.S. power generation in 2030. Is that realistic? Pie-in-the-sky? Unduly conservative?   The answer might be found in both an analysis of recent trends, and in the dozens of technology-by-technology forec....
Anybody who has considered the security options....
In school, a “C” student is conside....
Globally, renewable energy is near a tipping po....
In the United States, over 20% of the urban lan....
Solar installations are surging throughout much....
Securing each PV module with multiple fasteners....

Energy Storage

Measuring the True Costs and Benefits of Energy Storage
A variety of new energy storage systems have emerged as business and government leaders rush to make advances in renewables and energy savings. Those systems include different chemical compositions, form factors (cylindrical cell, pouch, prismatic, flow), and battery management systems (BMS). That can make choosing a battery system challenging, even confusing. However, checking a few simple per....
  Energy storage systems (ESS) ba....
Last year, in many ways, proved the "Year ....
When the first electric vehicles (EV) rolled ou....
Today there are generally three sources of elec....
Advanced energy storage has a number of useful ....
As the solar, smart home, and electric vehicle ....

Geothermal

Tapping into Mine Water Geothermal
Mine water is often considered not only a waste, but also a serious danger to human and environmental health. With millions of miles of abandoned tunnels in the United States filled with potentially acidic and heavy metal enriched water, the task of cleaning it up is daunting. However, this expensive hazard can also be a profitable resource.    Communities around the world hav....
Geothermal heat pump industry seeks recognition....
As a baseload, renewable power provider, one wo....
Geothermal energy is, perhaps, one of the most ....
As geothermal heating and cooling gains in popu....

Fears the Export Pellet Industry Harms Forests Unfounded
In 2014, industrial grade pellet producers shipped roughly 3.6 million tons of wood pellets to the EU. To manufacture those pellets, mills in the US South consumed 6 million short green tons of pulpwood. That 6 million tons of pulpwood represents:   • Less than 4% of all the pulpwood harvested in the region • Less than 2.5% of all the timber harvested in the region ....
More than three decades into the tire recycling....
Municipal wastewater heat recovery is a system ....
Developing a more efficient way to produce biof....
The potential for renewable gas production and ....
Despite great efforts to reduce our c....
Wastewater treatment facilities are a relativel....