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Resource Documents: Grid (164 items)
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Bulk Energy Storage Increases United States Electricity System Emissions
Author: Hittinger, Eric; and Azevedo, Inês
Abstract. Bulk energy storage is generally considered an important contributor for the transition toward a more flexible and sustainable electricity system. Although economically valuable, storage is not fundamentally a “green” technology, leading to reductions in emissions. We model the economic and emissions effects of bulk energy storage providing an energy arbitrage service. We calculate the profits under two scenarios (perfect and imperfect information about future electricity prices), and estimate the effect of bulk storage on net emissions of CO₂, SO₂, . . .
More »Have fossil fuels been substituted by renewables? An empirical assessment for 10 European countries
Author: Cardoso Marques, António; Alberto Fuinhas, José; and André Pereira, Diogo
Highlights. • The econometric technique takes into consideration both short- and long-run effects. • The installed capacity of wind power preserves fossil fuel dependency. • Natural gas is the main fossil fuel used to back up renewable energy sources. • The installed capacity of hydropower and solar PV has been substituting fossil fuels. • Electricity consumption intensity and its peaks have been satisfied by burning fossil fuels. Abstract. The electricity mix worldwide has become diversified mainly by exploiting endogenous and . . .
More »Impact of Hourly Wind Power Variations on the System Operation in the Nordic Countries
Author: Holttinen, Hannele
[abstract] The variations of wind power production will increase the flexibility needed in the system when significant amounts of load are covered by wind power. When studying the incremental effects that varying wind power production imposes on the power system, it is important to study the system as a whole: only the net imbalances have to be balanced by the system. Large geographical spreading of wind power will reduce variability, increase predictability and decrease the occasions with near zero or . . .
More »Effect of Energy Storage on Variations in Wind Power
Author: Paatero, Jukka; and Lund, Peter
[abstract] Irregularities in power output are characteristic of intermittent energy, sources such as wind energy, affecting both the power quality and planning of the energy system. In this work the effects of energy storage to reduce wind power fluctuations are investigated. Integration of the energy storage with wind power is modelled using a filter approach in which a time constant corresponds to the energy storage capacity.The analyses show that already a relatively small energy storage capacity of 3 kWh (storage) . . .
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