Evergy Kansas Central Rate Selection Guide
Evergy Kansas Central (formerly Westar Energy) is an investor-owned electric utility serving about 397,000 customers across central and eastern Kansas, regulated by the Kansas Corporation Commission. Data access is portal-centric — there is no Green Button, no public API, and no documented EDI program for customer usage data.
Evergy Kansas Central Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| Small General Service | commercial | Basic fee ~$22.73/mo; energy ~$0.067/$0.049 per kWh; demand $4.43 (winter)/$8.56 (summer) per kW (2018-20 base) | Small offices, retail, and light commercial under 200 kW |
| Medium General Service | commercial | Basic fee ~$118.40/mo; demand ~$16.15/kW year-round (2018-20 base) | Mid-size facilities with 200-1,000 kW demand |
| Large General Service | industrial | Basic fee ~$320/mo; energy ~$0.0133/kWh; demand ~$14.20/kW (2018-20 base) | Large facilities and small industrials, 1,000-25,000 kW |
| Industrial and Large Power | industrial | Demand-dominated industrial tariff; figures per detailed tariff book | Heavy industry and large loads over 25,000 kW |
Market Overview
Evergy Kansas Central operates as a regulated monopoly under the Kansas Corporation Commission. All generation, transmission, and distribution service is bundled and billed under KCC-approved tariffs. There is no competitive retail supplier market in Kansas.
Need to pull your actual usage data to compare rates? See the Evergy Kansas Central Data Access Guide →
Current Rate Schedules
Evergy Kansas Central C&I customers take bundled service under KCC-approved tariff schedules tiered by demand: Small General Service (<=200 kW), Medium General Service (200-1,000 kW), Large General Service (1,000-25,000 kW), and Industrial/Large Power (>25,000 kW). Base rates combine a Basic Service Fee, energy charges (per kWh, often seasonal), and demand charges (per kW). The base-rate dollar figures below are drawn from Evergy's published Kansas Central commercial rate summary (base rates effective Sept 27, 2018; summary dated April 14, 2020). In September 2025 the KCC approved a ~$128 million rate-case settlement effective with the October 2025 billing cycle, so current billed rates are higher than the figures shown — always confirm against the detailed tariff book.
Effective: October 1, 2025 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Small General Service (SGS) | commercial | Most nonresidential customers with average demand of 200 kW or less | Basic Service Fee plus seasonal energy and demand charges. Per the 2018-2020 base-rate summary: Basic Service Fee $22.73/mo; energy first 1,200 kWh $0.067079/kWh, additional $0.048818/kWh; demand (over 5 kW) $4.43/kW winter (Oct-May) and $8.56/kW summer (Jun-Sep). Plus fuel, energy-efficiency, transmission, and property-tax riders. Current rates higher after the Oct 2025 increase — verify in the tariff book. | — |
| Medium General Service (MGS) | commercial | Nonresidential customers with demand of 200-1,000 kW | Higher Basic Service Fee with energy and year-round demand charges. Per the 2018-2020 summary: Basic Service Fee $118.40/mo; energy ~$0.011839/kWh winter and ~$0.015590/kWh summer; demand $16.15/kW year-round. Subject to standard riders. Confirm current values in the detailed tariff book post Oct-2025 increase. | — |
| Large General Service (LGS) | industrial | Large commercial/industrial customers with demand of 1,000-25,000 kW | Year-round (non-seasonal) energy and demand charges. Per the 2018-2020 summary: Basic Service Fee $320.00/mo; energy $0.013295/kWh; demand $14.199799/kW. Standard riders apply. Current billed rates higher after Oct 2025 — verify in the tariff book. | — |
| Industrial and Large Power | industrial | Largest industrial customers with demand greater than 25,000 kW | Demand-dominated industrial tariff with low per-kWh energy charges and substantial monthly demand charges plus standard riders. Specific dollar figures are not published in the commercial summary; refer to the KCC detailed tariff book for current schedule terms. | — |
| Large Load Tariff (>75 MW) | industrial | Very large loads such as data centers exceeding 75 MW | KCC-approved large-load tariff requiring 12-year contracts, a minimum 80% demand (take-or-pay) commitment, and customer-funded transmission upgrades. Pricing is contract-specific; see the detailed tariff book and KCC filings. | — |
Rate Recommendations by Use Case
Mid-size commercial facility (200-1,000 kW)
Office parks, retail centers, and light manufacturing in the Medium General Service range.
MGS fits 200-1,000 kW loads with year-round demand pricing; demand management is the primary cost lever.
- Track the monthly 15-minute peak in the portal
- Stagger HVAC and large-motor startups
- Verify MGS vs. SGS eligibility at 800-401-5666
Large facility / small industrial (1,000-25,000 kW)
Large warehouses, campuses, and manufacturers on Large General Service.
LGS offers low non-seasonal energy charges with a substantial demand charge, so peak control dominates savings.
- Prioritize peak-shaving and load shifting
- Consider on-site generation/storage for peak events
- Use ALA to monitor multiple meters centrally
Heavy industrial / large load (>25,000 kW)
Energy-intensive plants and very large loads.
Demand-dominated tariffs reward high, steady load factors; loads over 75 MW face take-or-pay terms.
- Negotiate and model take-or-pay terms carefully for >75 MW loads
- Maximize load factor to dilute demand charges
- Engage Evergy account management early on transmission upgrade obligations
Multi-site portfolio / energy consultant
Organizations or advisors managing many Evergy meters.
ALA consolidates usage, demand, and billing across accounts and supports delegated third-party access where no API exists.
- Set up ALA via 800-383-1183 or businessrebates@evergy.com
- Use delegated access instead of sharing portal credentials
- Submit manual bulk data requests for historical analysis (10-15 business days)
Historical Rate Trends
Evergy Kansas Central rates are reset through periodic KCC rate cases plus quarterly fuel and rider adjustments. The most recent general rate case concluded in 2025.
October 1, 2025
KCC approved a unanimous settlement in the 2025 Kansas Central rate case (~$128M revenue increase against a ~$196M request), effective with the October 2025 billing cycle; residential bills at 900 kWh rose ~$8.47/mo.
+9.6%September 27, 2018
Base-rate values reflected in Evergy's published Kansas Central commercial rate summary (effective Sept 27, 2018; summary issued April 14, 2020).
n/aOverall trend: Upward — driven by grid modernization, aging-equipment replacement, and AMI investment
Next expected change: Future general rate case expected; ongoing quarterly fuel/rider adjustments continue in the interim
Cost Optimization Strategies
Because demand charges drive most C&I bills, the highest-impact strategies target peak demand and rate-schedule fit.
Peak demand management
For: All C&I schedules with demand charges
Stagger equipment startups and shift flexible loads off coincident peaks to lower the monthly 15-minute demand reading that sets demand charges.
Rate schedule optimization
For: Customers near schedule demand thresholds
Confirm the account is on the lowest-cost eligible schedule (SGS/MGS/LGS) given actual demand; Evergy will help review at 800-401-5666.
Demand response participation
For: Facilities with flexible/curtailable load
Enroll in Business Demand Response to earn incentives for curtailing during peak events.
Energy efficiency and load shaping
For: All C&I customers
Use Energy Analyzer hourly data to identify high-consumption equipment and reduce overall kWh and peaks.
To implement these strategies, you need your 15-minute interval data. Learn how to download Evergy Kansas Central interval data →
Frequently Asked Questions
Does Evergy Kansas Central support Green Button or an API for C&I usage data?▾
No. Evergy Kansas Central does not offer Green Button Download My Data, Green Button Connect My Data, or an official developer API. Commercial and industrial customers access usage through the My Account portal and Energy Analyzer, and can request bulk data manually from businessrebates@evergy.com.
How can a consultant or energy manager access a client's usage and demand data?▾
The cleanest path is Account Link Advantage (ALA), where the customer grants delegated portal access to multiple accounts. Alternatively, the customer can authorize a manual bulk data request to businessrebates@evergy.com, which typically takes 10-15 business days.
Can I get 15-minute interval data for a commercial site?▾
Not through self-service. AMI meters record 15-minute demand for billing and DSM programs, but customers only see hourly-to-daily data in Energy Analyzer. Sub-hourly interval data generally requires a special request to Evergy or participation in a TOU/demand response program.
Is there an EDI program for usage or billing data?▾
No public EDI (X12 867/810/820) program is documented for Evergy Kansas Central. Inquiries to Business Services are typically routed to a manual data-request process rather than automated EDI.
How does a C&I customer know which rate schedule applies?▾
Eligibility is driven by average demand: Small General Service (200 kW or less), Medium General Service (200-1,000 kW), Large General Service (1,000-25,000 kW), and Industrial/Large Power (greater than 25,000 kW). Evergy can help confirm the lowest-cost schedule at 800-401-5666.
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