Archive for the ‘O&M’ Category

GE Expands On and Offshore Wind Presence

Thursday, July 1st, 2010

Published: June 30, 2010
Liverpool, England & Idaho, United States — GE announced plans to install up to five offshore demonstration wind turbines through two separate partnerships. Both initiatives will feature the largest wind turbine in GE’s fleet, a 4.0-megawatt machine that includes a 110 meter rotor. GE’s 4.0-110 incorporates advanced drive train and control technologies and GE’s innovative technology that eliminates the need for gearboxes.

GE has signed a cooperation agreement with Norwegian energy companies Statoil and Lyse to jointly carry out technical and environmental feasibility studies for building an offshore wind demonstration project in Rogaland County, off the southwest coast of Norway.

The agreement includes the installation of up to four 4.0-megawatt offshore, direct drive wind turbines. Subject to successful completion of the feasibility studies and the appropriate investment and funding decisions, the installation of the wind turbines will start in 2012.

GE is also planning an onshore installation of its direct drive machine in 2011. The machine, designed specifically for the offshore environment, will be erected in Gothenburg Harbor in Sweden in cooperation with Gothenburg Energy.

“We are pleased to be moving to the next phase in our offshore strategy,” said Victor Abate, vice president of GE Power & Water’s Renewable Energy business. “With Statoil, Lyse and Gothenburg Energy we have found three excellent partners with whom we can demonstrate our offshore technology. We remain optimistic about the potential of the offshore wind industry, and we believe that our partnering strategy will increase our potential for growth in this sector, particularly in Europe where we see tremendous opportunities.”

According to a recent Emerging Energy Research (EER) market study, the installed base of offshore wind grew from 70 megawatts to 1.5 gigawatts over the past eight years. EER expects that total to rise to nearly 45 gigawatts by 2020. Much of that growth is expected to occur in Europe, particularly in the UK, where the government has launched a program for a massive expansion of offshore wind energy. The country is currently working towards a third round of offshore wind farm developments.

At the same time, GE Energy Financial Services announced that it has made an equity investment in Idaho’s largest wind power project. The almost half billion dollar portfolio of 11 wind farms under construction was developed by Exergy Development Group. GE Energy Financial Services made the announcement on Tuesday at the American Council on Renewable Energy’s Renewable Energy Finance Forum in New York City.

The GE unit will own a majority equity interest in the Idaho Wind Partners project. Exergy Development Group will own a minority interest along with manager and operator Reunion Power. The wind farms will sell all of their power to Idaho Power Company under 20-year agreements. Once completed, the portfolio is expected to qualify for the Federal Treasury Grant program designed to stimulate renewable energy projects. Additional financial details of the transaction were not disclosed

“Through our investment in Idaho’s largest wind power portfolio, GE Energy Financial Services is putting millions of dollars to work to bring jobs and clean energy to Idaho and help the country meet growing demand for domestic, renewable sources of energy,” said Kevin Walsh, managing director and head of Power and Renewable Energy at GE Energy Financial Services.

The project is expected to create approximately 175 construction jobs as well as permanent employment for operations and ongoing seasonal maintenance requirements. In addition to those employed directly, a wind project of this size would typically support the equivalent of over 2,200 full-time jobs in the United States for one year—about half of which would be in-state—and create 25 permanent jobs, based on a National Renewable Energy Laboratory model

http://www.renewableenergyworld.com

Wind Power Upkeep Woes Also Offer Opportunities

Friday, March 12th, 2010

Wind turbine technology has become a fully commercial venture, but the recent rapid growth of the wind industry has strained its supply chain to meet demand in a timely manner. Furthermore, unexpected component failures, especially electronic controls, gearboxes, generators, and rotor blades, have driven up operations and maintenance costs.

During the course of the research for a new report just published by Wind Energy Update, it ultimately became clear that reliable and verifiable data on wind industry operations and maintenance cost trends is quite rare. In fact, there are no current widely available data sets illustrating these wind industry costs.

The key to reducing operations and maintenance liabilities is preventive maintenance substituting for unscheduled maintenance. Here is a list of the primary findings derived from a Wind Energy Update survey conducted for this report:

  1. The percentage of wind turbines still under warranty during the time of Wind Energy Update survey was 79 percent. Due to this fact, most owner-operators don’t even know what their exact costs of operations and maintenance are. Due to the unexpected high failure rates of major components with the most recent class of multi-megawatt turbines, original equipment manufacturers have no motive to share their failure rate data with owner-operators, let alone researchers trying to publicize these facts.
  2. Operations and maintenance costs for wind power are far higher than originally projected, particularly in the United States, now the world’s largest wind power market.
  3. Europe’s emphasis on preventive rather than reactive maintenance results in overall lower operations and maintenance costs than the United States: a 2 to 5 percent advantage if resource factors are accounted for.
  4. According to this Wind Energy Update survey, the percent change in wind farm return on investment was negative 21 percent with a standard deviation of 13 percent. This underperformance of wind assets is most likely attributed to both differences in power production and operations and maintenance costs over original estimates.
  5. The same surveys showed that the percentage of total wind initial project costs invested in operations and maintenance was 3 percent with a standard deviation of 3 percent. Many project owner-operators had originally estimated operations and maintenance at one percent of initial project costs.
  6. Finally, the average values of operations and maintenance costs obtained from surveys were $0.027 per kilowatt-hour. This compares to early estimates by one of the world’s dominant turbine suppliers of $.005 per kilowatt-hour.

Part of the challenge facing the wind industry as it scales up turbines to more efficiently capture the kinetic energy from the wind is pure and simple science. While the weight of larger rotors is designed to capture wind energy increases by the cube, power generation only increases by the square.

In other words, increasing rotor lengths from 40 to 80 metres increases weight (and turbine cost) by a factor of 8, but energy capture only by a factor of 4.

New, more radical designs such as two-bladed rotors, direct drive turbines without gearboxes and even various vertical axis designs are now coming to market as designers seek new innovations to address this fundamental dilemma.

http://blog.cleantechies.com

New report defines true cost of wind turbine operations & maintenance

Tuesday, March 2nd, 2010

“Gearboxes are still the Achilles’ heel for the wind industry, and can cost up to $500,000 to fix due to the high cost of replacement parts, cranes (which can cost $75,000-$100,000), post installation testing, re-commissioning and lost power production,” says one long-term veteran O&M technician.

http://social.windenergyupdate.com/pr/new-report-defines-true-cost-wind-turbine-operations-maintenance

O&M strategy: Keeping offshore turbines turning

Thursday, February 25th, 2010

Colin Morgan, director of offshore wind at consulting engineers Garrad Hassan, expects the availability, or machine reliability, of next-generation offshore turbines to come out in the low 90s compared to the average 97-98 percent reliability achieved in onshore turbines.

Why the deficit? In part, this will be due to more frequent occurrence of turbine operation at full power.

But for the main part, it will be due to the huge challenge of repair access. When operating offshore, time is money, particularly when a crane vessel costing up to £50,000 per day is required. Operators will need bigger, better turbines, and optimum access systems.

http://social.windenergyupdate.com/industry-insight/om-strategy-keeping-offshore-turbines-turning