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Policy Scenarios

Year:
State:

Initial State Report Card for 2021: Alabama

Overall Grade as determined by the unweighted average of 4-point maximum grades in the four subject areas.

Overall Grade
B- (2.85/4)

Resilience against Long-Term Outage as determined by the Ratio of Resilient Nameplate Capacity to State Consumption.

Resilient Nameplate Capacity: The sum of dispatchable resources and resources with sufficient on-site fuel storage. Natural gas plants are only included in this total if they have 2+ pipeline connections, or if they have an alternative energy source they can switch to.

State Consumption: The sum of electricity sales by utilities for the selected year.

$$\frac{Resilient\;Natural\;Gas+Nuclear+Hydro+Pumped\;Storage+Geothermal+Petroleum+Coal}{ State\;Electricity\;Consumption}$$

Resilience
C- (21st)

Carbon Intensity of generation plants, which is the Sum of Carbon Emissions divided by the Electricity Generation.

Carbon Intensity: Determined by multiplying fuel-specific carbon emissions per mmBTU and the thermal output associated with that fuel.

$$\frac{\sum_{Fuel} (CO_2\;Factor* Thermal\;Output) }{Generation}$$

Carbon Intensity
B- (22nd)

Reliability as determined by SAIDI (System Average Interruption Duration Index)

SAIDI: The Sum of all Customer Outages in minutes over the total number of customers served.

$$\frac{\sum Outages}{\sum Customers}$$

Reliability
B (24th)

Electricity Cost as determined by the Average Price per Kilowatt Hour for electricity sales within the state.

Electricity Cost
A (27th)

Capacity Scenarios

The Capacity Scenarios section allows you to make capacity changes to the selected state and see how it affects the state's grade.

Changes to generation are calculated using the state average capacity factor for each energy source. If a state lacks historical data for the energy source, then the national average will be used.

Changes to emissions are calculated using the state average CO2-per-Megawatt for each energy source. If a state lacks historical data for the energy source, then the national average will be used.

Current
MW
Change
MW
= Final
MW
Biomass:   =
Coal:   =
Geothermal:   =
Hydro:   =
Natural Gas:   =
Nuclear:   =
Storage:   =
Petroleum:   =
Solar:   =
Wind:   =
Waste:   =

Overnight Cost: $0
Determined using the average Overnight Cost per MW of each energy source, as published by the EIA and the IPCC.

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Modified State Report Card for 2021: Alabama

Overall Grade
B- (2.85/4)

Resilience
C- (21st)

Carbon Intensity
B- (22nd)

Reliability
B (24th)

Electricity Cost
A (27th)


Alabama Overall GPA

States Shaded by Overall GPA — 2021

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