Avoided-Cost Ratesby Hundred Dollar Labs

Wisconsin PURPA avoided-cost rates

The standard-offer rates for small generators (qualifying facilities) published by 4 investor-owned utilities we cover in Wisconsin: Alliant Energy (WPL), We Energies, Wisconsin Public Service (WPS) and Xcel Energy (NSP-Wisconsin). Checked on October 4, 2026.

Utility	Schedule	Size cap	Rate structure	Effective	Checked on
Alliant Energy (WPL)	Schedule PgS-1, Parallel Generation - (In Excess of 20 kW), Sheets 7.75–7.79; Schedule PgS-3 (20 kW or less) pays non-renewable generators the PgS-1 standard avoided cost energy rates	Customers taking service under another rate schedule with generation rated in excess of 20 kW-ac but not in excess of 5,000 kW-ac (aggregated across conjunctively billed accounts). Generation of 20 kW or less: Schedule PgS-3.	Energy credit per kWh by pricing period (High, Regular, Low) and service voltage (Transmission/Primary/Secondary). High Rate: weekdays 11 a.m.–7 p.m. in summer (June–August) and 5–9 p.m. in winter (December–February); Low Rate: 11 p.m.–6 a.m. weekdays and all weekend/holiday hours; Regular: all other hours. Capacity credit paid per kWh in the High Rate period.	2026-01-01	2026-10-04
We Energies	Rate Schedule CGS DS-FP, Customer Generating Systems – Direct Sale – Fixed Price, 5 MW or less (sell-all QFs; Sheets 201.9–201.10.1); Rate Schedule CGS-CU, Customer Generating Systems – Customer Use, 5 MW or less (QFs on a time-of-use retail rate selling excess; Sheets 201.11–201.14)	CGS DS-FP: certified QFs with total generating capacity of 5 MW or less, all output sold to the Company, connected through a Company generation meter with no other load except generator auxiliaries. CGS-CU: QF customers on a time-of-use retail rate with on-premises generation of 5 MW or less.	Avoided Energy Cost Rate per kWh, not subject to fuel or other adjustments: one flat all-hours rate for residential/secondary flat-rate customers; on-peak/off-peak rates by Summer (June 1–September 30) and Non-Summer (October 1–May 31) for time-of-use secondary customers and for primary customers in three voltage tiers. DS-FP on-peak is 8:00 a.m.–8:00 p.m. weekdays excluding six holidays. Avoided Transmission Cost Rate $0.00000 per kWh.	Energy rates (Sheets 201.10, 201.12): 2026-01-01; capacity rates (Sheets 201.10.1, 201.13): 2026-06-01	2026-10-04
Wisconsin Public Service (WPS)	Schedule PG-2A, Parallel Generation-Purchase by WPSC (sell-all QFs; Sheets E4.15–E4.18) and Schedule PG-2B, Parallel Generation-Purchase by WPSC (QF customers on a time-of-use rate selling to the Company; Sheets E4.19–E4.20.1)	PG-2A: certified QFs with total generating capacity of 5,000 kW or less, all output purchased by the Company, directly connected via a Company generation meter with no other load except generator auxiliaries. PG-2B: QF customers on a time-of-use rate with customer-owned capacity of 5,000 kW or less.	Avoided Energy Cost Rate per kWh, not subject to fuel or other adjustments, by on-peak/off-peak, Winter (October–May)/Summer (June–September) and service voltage (Secondary/Primary/Transmission). On-peak: 7:00 AM–10:00 PM winter, 7:00 AM–11:00 PM summer, Monday–Friday except holidays. Avoided Transmission Cost Rate $0.00000 per kWh.	Energy rates: 2026-01-01; capacity rates: 2026-06-01	2026-10-04
Xcel Energy (NSP-Wisconsin)	Schedule Pg-2A, Parallel Generation - Sale to Company (sell-all QFs; Sheets E 56.4–56.51) and Schedule Pg-2B, Parallel Generation – Sale to Company After Customer Self-Supply (Sheets E 56.6–56.61)	Pg-2A: certified QFs with nameplate capacity of 5,000 kW-AC or less, all production purchased by the Company. Pg-2B: retail customers with QF generation of 1,000 kW-AC or less, deliveries may follow self-supply.	Per-kWh energy credits: on-peak (June–September and October–May rates) and a single off-peak rate, plus a transmission credit on all kWh; loss factors by metering level (1.02659 transmission untransformed to 1.07911 secondary) are applied to the credits. On-peak: 9:00 a.m.–9:00 p.m. Monday–Friday excluding holidays.	2026-01-01	2026-10-04

When these rates change next

Alliant Energy (WPL): Annual: the Option A capacity credit 'will be updated each calendar year' (MISO auction formula); the standard avoided cost of energy is described in the same rate book as 'annually updated'.
We Energies: Annual, per the tariff: the Avoided Energy Cost Rate is updated on January 1 of each year (forecast load-weighted day-ahead LMP for the WEC.S zone, grossed up for distribution losses); the CGS-CU capacity rate is updated each June 1 to the current MISO CONE; DS-FP accredited capacity is adjusted each June 1.
Wisconsin Public Service (WPS): Annual, per the tariff: the Avoided Energy Cost Rate is updated on January 1 of each year (forecast load-weighted day-ahead LMP for the WPS.WPSM zone plus distribution losses); the PG-2B capacity rate is updated each June 1 to the current MISO CONE; PG-2A accredited capacity is adjusted each June 1.
Xcel Energy (NSP-Wisconsin): Not stated as a rule. The rate sheets are reissued each year in an annual 4220-TE docket (current: 4220-TE-2026); the peak-period definition refers to refiling the rate sheet not later than November 1 of each year.

Rates, eligibility and contract terms change: confirm them with the utility or the state utility commission before relying on them.