Schwarze Pumpe Power Station
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Methodology
Step 1: Calculate the quantity of CO2 emissions that were delayed on each day of the action.
In 2016, 3500-4000 activists reduced the Schwarze Pumpe power station’s power production by 80% 1. The facility is powered by two 800 MW units 4. A 1000 MW unit is estimated to burn 9000 tonnes of coal per day 3. To identify the approximate tCoal/day, the MW:MT ratio was applied to the 1600 MW Schwarze Pumpe power station’s reduced power output.
If 1 tonne of coal releases 2.9 tonnes of CO2 when burned 5, the emissions delayed can be calculated as follows:
Step 2: Calculate the benefit of delaying (temporarily storing) these emissions for the period of the action.
The Schwarze Pumpe power station was reduced by 80% power for two days 1. Coal arriving on the site for day 1 would have been stored for two days and coal arriving on site for day 2 would have been stored for one day. The sequence of days must be multiplied by the CO2 emissions that were delayed for each daily batch of coal that was held up at the facility.
Step 3: Calculate the offset.
We then use an equivalence factor of 128 which was calculated using the Lashof method with a discount rate of 0 and a time horizon of 100 years 6 7. This equivalence factor posits that the effects of the release of 1 tonne of CO2 emissions is offset by the storage of 128 tonnes of CO2 for 100 years.
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https://www.ende-gelaende.org/en/press-release/press-release-15-may-2016/ ↩↩
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https://energyeducation.ca/encyclopedia/Coal_fired_power_plant#cite_note-4 ↩
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R. A. Hinrichs and M. Kleinbach, "Electricity: Circuits + Superconductors," in Energy: Its Use and the Environment, 4th ed. Toronto, Ont. Canada: Thomson Brooks/Cole, 2006, ch.10, sec.A, pp.320 ↩
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https://www.power-technology.com/data-insights/power-plant-profile-schwarze-pumpe-power-station-germany/ ↩
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https://climate.mit.edu/ask-mit/how-can-burning-one-ton-fuel-create-more-one-ton-co2 ↩
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Chay et. al. calculate this equivalence factor using Lashof here: https://carbonplan.org/research/ton-year-explainer ↩
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Fearnside et. al. (2000) Accounting for time in mitigating global warming through land-use change and forestry. Mitigation and adaptation strategies for global change ↩
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https://www.theguardian.com/environment/2016/may/16/break-free-protest-fossil-fuel ↩
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https://www.ende-gelaende.org/en/press-release/press-release-11-10-2016/ ↩
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https://web.archive.org/web/20160612210036/https://www.ende-gelaende.org/de/aktion/aufruf/ ↩