Integrated
Resource Plan
Resource Plan
This is the latest adopted system plan in the IRP proceeding, and is used as the base model for the avoided cost calculator (ACC).
What is the 2023 Preferred System Plan (PSP)?
These are the 6 factors whose avoided costs are included in the TSB.
What are lifecycle energy, ancillary services, generation capacity, transmission capacity, distribution capacity, and GHG benefits?
This is the equation to calculate TSB.
What is the NTG ratio x (sum of all benefits - sum of all increased supply costs)?
In 2045, this generation type is planned to be largest capacity contributor in the Preferred System Plan (PSP).
What is solar?
The avoided cost value for this factor became notably more time-dependent between 2022 and 2024.
What is energy?
These are the 3 contributors to increased supply costs in the TSB calculation.
What are interactive effects, fuel substitution load increases, and high GWP refrigerant leakage?
These are the storage durations for the lithium-ion batteries in the Preferred System Plan (PSP).
What are 4 and 8 hours?
This factor is valued more highly in 2024 than it was in 2022, and is concentrated in evenings and mornings.
What is greenhouse gas (GHG)?
The avoided costs for these benefits are NOT contained within the avoided cost calculator.
What are avoided refrigerant leakage and gas infrastructure costs?
After solar and battery storage, this generation type is the 3rd largest capacity contributor by 2045 in the Preferred System Plan (PSP).
What is wind?
In order to determine avoided cost benefits for a particular measure, you must multiply the avoided costs in each hour by this.
What is the load shape, or the load savings in each hour, for that measure?
This tool is housed on the CEDARS website and will output the TSB per measure.
What is the Cost-effectiveness Tool (CET)?