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Enhanced Geothermal: Frack or Friction?

Enhanced Geothermal: Frack or Friction?

In a geothermal sector hit hard by the shaky financial markets, one might think that capital-hungry enhanced geothermal systems (EGS) companies would be feeling the pinch. But the opposite seems to be true: Buoyed by stronger-than-ever government support and interest from venture capitalists, 2010 turned out to be a pretty good year for the EGS industry.
WorldWater & Power Patent Filing

WorldWater & Power Patent Filing

WorldWater & Power Corporation filed an application with the U.S. Patent and Trademark Office for a Maximum Power Point Speed Control, a method and apparatus that perform maximum power tracking of motor speed. The invention relates generally to the operation of AC motors or similar loads with AC motor drives that convert power from a DC source (such as sun […]
PV Powered Achieves Third-Party Confirmation

PV Powered Achieves Third-Party Confirmation

[RenewableEnergyAccess.com] Relatively recent entrant to the solar PV inverter market, PV Powered, announced that its StarInverter PVP 2800 solar inverter is the industry’s first UL and ETL tested inverter to meet Underwriters Laboratories (UL) 1741 Standard and ETL performance confirmation. ETL has confirmed the StarInverter PVP2800 at 2800 watts of power output and with a consistent 96 percent efficiency rating. […]
Computational Tools to Assess Turbine Biological Performance

Computational Tools to Assess Turbine Biological Performance

To help ensure the safety of fish passing through the new turbines at 912-MW Priest Rapids, Public Utility District No. 2 of Grant County is employing the BioPA method to analyze the biological performance of proposed designs - and to choose an improved one for this facility.
Mitsubishi Electric Develops Silicon Solar Cell with 18% Conversion Efficiency Rate

Mitsubishi Electric Develops Silicon Solar Cell with 18% Conversion Efficiency Rate

Mitsubishi Electric Corporation President and CEO Setsuhiro Shimomura announced today the company's achievement of a world record photoelectric conversion efficiency rate of 18.0% in a 150mm square practical use multi-crystalline silicon solar cell, an improvement of 1.2% over its previous models.
Turbine Performance Testing: Bureau of Reclamation’s Experience

Turbine Performance Testing: Bureau of Reclamation’s Experience

Performance testing is a key activity when procuring new hydro turbines and when rehabilitating units.
HECO Issues RFP for Biofuel

HECO Issues RFP for Biofuel

Hawaiian Electric Company (HECO) has issued a request for proposals (RFP) to find a supplier of biofuel -- ethanol or biodiesel -- for use in HECO's planned 110-megawatt (MW) Campbell Industrial Park Generation Station.
When Will Solar Batteries Become Economical?

When Will Solar Batteries Become Economical?

It's always the same problem: You save energy but the electricity bills are still getting more expensive. Luckily, there is a solution: Solar power can be generated in Germany for 12 cents per kilowatt hour. In contrast, utilities currently charge an average of 25 cents for domestic electricity. What better reason to invest into your own photovoltaic system? Solar storage systems can increase on-site consumption by up to 70 percent. They absorb surplus solar power and pass on the energy as required — expensive grid power is hardly necessary. This makes the systems very attractive for consumers: According to an EuPD Research survey, almost 90 percent of solar operators are already thinking about buying an additional storage system.
Tech Notes

Tech Notes

Report indicates hydro, other renewables will continue growth The REN-21 Renewables 2011 Global Status Report, released in August, shows that the renewable energy sector, including hydropower, continues to perform well despite economic recession, incentive cuts and low natural gas prices. The report was commissioned by the Paris-based Renewable Energy Policy Network for the 21st Century, or REN-21. It was authored […]
Biodiesel, Electric Make Better Transportation

Biodiesel, Electric Make Better Transportation

Visitors to and residents of Toronto are getting a look at alternative vehicle technology at the 2004 Better Transportation Expo this week.