Library filed under Energy Policy

Working Paper: Utility-scale Wind Power: Impacts of Increased Penetration

Dti3_20robin_20oakley_20atl_1__thumb This working paper is made available by the Resource and Environmental economics and Policy Analysis (REPA) Research Group at the University of Victoria. REPA working papers have not been peer reviewed and contain preliminary research findings. They shall not be cited without the expressed written consent of the author(s). Editor's Note: The authors’ conclusion regarding ‘effective capacity’, i.e. the measure of a generator’s contribution to system reliability that is tied to meeting peak loads, is that it “is difficult to generalize, as it is a highly site-specific quantity determined by the correlation between wind resource and load” and that ‘values range from 26 % to 0% of rated capacity.” This conclusion is based, in part, on a 2003 study by the California Energy Commission that estimated that three wind farm aggregates- Altamont, San Gorgonio and Tehachpi, which collectively represent 75% of California’s deployed wind capacity- had relative capacity credits of 26.0%, 23.9% and 22.0% respectively. It is noteworthy that during California’s Summer ’06 energy crunch, as has been widely publicized in the press, wind power produced at 254.6 MW (10.2% of wind’s rated capacity of 2,500MW) at the time of peak demand (on July 24th) and over the preceding seven days (July 17-23) produced at 89.4 to 113.0 MW, averaging only 99.1 MW at the time of peak demand or just 4% of rated capacity.
1 Jun 2005

Man Made Myth: Is Global Warming Mankind's Deadliest Creation- You Decide

Kyotomanmademythiee_thumb Billions of dollars are being spent to stop so-called manmade global warming. Already we have been told "it is a bigger threat to manking than international terrorism", with runaway warming, rises in sea levels and increases in the number of floods, hurricanes, droughts and tropical diseases predicted. Faced with this, a pragmatic technological society might decide it would get best value for money by modernising existing inefficient coal-fired stations, building nuclear power stations and efficient transport. But instead, we have poured sources into renewables.
1 Jun 2005

Wind Power Facility Siting Case Studies: Community Response

National_wind_coordinating_committee_siting_studies_thumb BBC Research & Consulting's 2005 report for the National Wind Coordinating Committee that studies 9 wind plant sitings in an effort to identify circumstances that distinguish welcomed projects from projects that were not accepted by communities.
1 Jun 2005

The Costs of a Windless Day

Environmental issues for windpower developers get the most press. But equally persistent is the question of intermittency-the fact that wind is the least predictable energy fuel for electricity production. The question is challenging on many levels for both generation and delivery.
5 May 2005

Why Wind Power Works for Denmark

Why_wind_works_for_denmark_thumb "The global oil price rise in the 1970s prompted the Danish government to switch to imported coal for its thermal power stations and to start a wind energy programme targeted at generating 10% of electricity by 2000. The target was achieved and there are now 5500 wind turbines rated at 3000 MW—including the world’s two largest offshore wind farms at Nysted (Fig. 1) and Horns Rev— producing around 16% of national demand. This paper reports on performance data of the west Denmark power grid, to which 80% of the country’s wind power is connected. The east Denmark power grid is entirely separate but both grids are heavily interconnected to the national grids of neighbouring countries to the north and south."
1 May 2005

Wind Power in the UK: Has the Sustainable Development Commission Got It Right?

Oxford_energy_comment_thumb "Even its supporters would probably now accept that in its early days nuclear power was oversold – the costs were underestimated (“too cheap to meter”); the practical problems (eg waste disposal) minimised; the benefits overstated; alternatives summarily dismissed; the risks ignored. The legacy of this overselling has been unhelpful – emotions are high on both sides and there is a climate of mistrust. It seems almost impossible to have a sensible debate about the place of nuclear in the energy mix, at a time when the need to look carefully at all non-CO2 emitting sources has never been greater. Have we learned from this experience? It does not always seem so. The current state of the debate about wind power presents many of the same unwelcome symptoms – exaggerated claims; confused arguments; strong emotions; neglect of the practicalities and risks. In this climate an authoritative and neutral examination of the issues would have been a helpful corrective. This is what the latest report of the Sustainable Development Commission (SDC) seems to promise. The Report, entitled “Wind Power in the UK” describes itself as “a guide to the key issues” surrounding wind power development, providing information to help “considered decisions to be made”. Unfortunately, but perhaps predictably, the Report fails to do so. The Commission ends up as just another cheerleader for wind power, using the Report to argue that “wind power must be made to work” because it is a “critically important part of the overall energy mix”. In its bullish (not to say bull-headed) approach, the Commission is repeating the errors of the early advocates of nuclear: underestimating the likely costs; minimising the practical problems; overstating the benefits; and dismissing the alternatives – in a report which, at many points, shows a poor grasp of the issues."
1 May 2005

Vermont's wind quandary

Will they demonstrate that remote ridgelines in the Northeast Kingdom are to be sacrificed to commercial wind development -- and that only a few souls way up north who have lost their peaceful retreat to strobe-lighted industrial monoliths will complain?
14 Apr 2005

Transmission Issues Associated with Renewable Energy in Texas

Renewablestransmissi_thumb This 'informal white paper' authored by the renewable energy industry and the Electric Reliability Council of Texas addresses the impact of wind's intermittency on the need for the development of comparable capacities of reliable sources that can be called upon when the wind is not blowing. It contains a particularly interesting chart that characterizes different energy sources as 'base load', 'peak load' and 'intermittent' with their associated benefits and drawbacks. Wind is deemed 'intermittent' with the following benefits (no emissions, no fuel costs, stable cost, low operating cost) and drawbacks (not dispatchable, not responsive, transmission needs, low peak value).
28 Mar 2005

Energy Policy: Germany

According to the study, a further financial and technical strong-arm effort would be required in order to be able to even input the quantity of green electricity planned by the federal government into the German electricity network by the year 2015.
19 Feb 2005
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