Entergy Mississippi Rate Selection Guide
Entergy Mississippi, LLC is an investor-owned, regulated electric utility serving roughly 459,000 customers across 45 Mississippi counties as a subsidiary of Entergy Corporation. Regulated by the Mississippi Public Service Commission (MPSC) under an annual Formula Rate Plan, it has deployed AMI smart meters with 15-minute interval capability and offers EDI, DataLink, and myAdvisor data access.
Entergy Mississippi Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| GS-300 | commercial | Customer + energy charge + riders (per tariff PDF) | Small to mid-size commercial sites |
| B-34 | commercial | Customer + energy + demand + riders | Intermediate general service loads |
| C-29 | industrial | Demand-based + energy + riders | Large general service / industrial |
| HLF-7 | industrial | High-load-factor demand/energy | Steady, high load factor operations |
| CI-1 | ev | EV charging infrastructure rate | Commercial EV charging sites |
Market Overview
Entergy Mississippi operates in a fully regulated, vertically integrated market with no retail choice. Rates are set by the Mississippi Public Service Commission (MPSC), primarily through the Formula Rate Plan (FRP-7) which adjusts rates annually. Customers cannot choose a competitive supplier; bills combine base rate schedule charges with a series of MPSC-approved riders (fuel/energy cost recovery, MISO, grid modernization, etc.).
Need to pull your actual usage data to compare rates? See the Entergy Mississippi Data Access Guide →
Current Rate Schedules
Entergy Mississippi C&I customers are served under MPSC-approved base rate schedules combined with multiple riders. The principal commercial/industrial schedules are GS-300 (General Lighting and Power), B-34 (Intermediate General Service), C-29 (Large General Service), HLF-7 (High Load Factor General Service), ALGS-10 (Alternate Large General Service), and CI-1 (Charging Infrastructure). Each schedule combines a customer charge, energy charge, and (for larger classes) demand charges, then adds riders such as FRP-7, ECR-4, MISO-2, GMR-1, SRC-1, and ATA-3. Per-kWh and per-kW values are set in the individual tariff PDFs and adjusted through the annual Formula Rate Plan and monthly fuel/rider records. Verified context: Entergy Mississippi's average residential price was about 13.21 cents/kWh in 2024 (EIA), roughly 20% below the national average, and the June 2025 MPSC annual plan kept rates essentially flat. Specific commercial $ figures are not published as plain values and should be read from the tariff books cited below.
Effective: July 1, 2025 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| GS-300 General Lighting and Power | commercial | General commercial lighting and power service for small to mid-size commercial customers. | Customer charge plus energy charge (and demand charge for larger usage), modified by applicable riders. Per-unit values are in the GS-300 tariff PDF. | — |
| B-34 Intermediate General Service | commercial | Intermediate-size general service commercial customers above the GS-300 class. | Customer, energy, and demand charges per the B-34 tariff PDF, plus riders. | — |
| C-29 Large General Service | industrial | Large general service commercial and industrial customers with substantial demand. | Demand-based schedule with customer charge, demand charge, and energy charge per the C-29 tariff PDF, plus riders. | — |
| HLF-7 High Load Factor General Service | industrial | Large customers with high, consistent load factors. | Designed to reward steady high-load-factor usage; demand and energy charges per the HLF-7 tariff PDF. | — |
| ALGS-10 Alternate Large General Service | industrial | Large general service customers electing the alternate large-service option (revised). | Alternate demand/energy structure for large loads per the ALGS-10 tariff PDF, plus riders. | — |
| CI-1 Charging Infrastructure | ev | Electric vehicle charging infrastructure loads (revised). | Purpose-built rate for EV charging infrastructure; charges per the CI-1 tariff PDF. | — |
| MVDR-1 Market Valued Demand Response | industrial | Large customers participating in market-valued demand response. | Demand response compensation/charges per the MVDR-1 schedule. | — |
Rate Recommendations by Use Case
Small to mid-size commercial site
GS-300 General Lighting and Power with myAdvisor monitoring.
GS-300 is the standard commercial schedule for smaller loads; myAdvisor usage analysis helps identify efficiency opportunities without needing DataLink.
- Use myAdvisor bill-driver analysis to target high-usage equipment
- Set high-usage alerts in myEntergy
- Review applicable riders on each bill
Intermediate general service facility
B-34 Intermediate General Service with demand awareness.
B-34 fits loads above the GS-300 class; once demand charges appear, peak management becomes worthwhile.
- Confirm B-34 vs. C-29 eligibility with the Business Center
- Begin tracking demand peaks
- Evaluate EDI 810 for automated invoice processing
Large industrial / high load factor plant
C-29 or HLF-7 with DataLink-driven demand management.
Large demand-based loads benefit most from interval-data-driven peak shaving; high, steady load factors may qualify for the more favorable HLF-7 schedule.
- Enroll in DataLink for 15-minute interval data
- Model C-29 vs. HLF-7 vs. ALGS-10 with the Business Development team
- Consider MVDR-1 demand response for additional credits
Commercial EV charging operator
CI-1 Charging Infrastructure rate for dedicated charging loads.
CI-1 is purpose-built for EV charging demand profiles and is generally more favorable than a standard demand schedule for variable charging loads.
- Compare CI-1 against GS-300/B-34 for your profile
- Shift charging off-peak where possible
- Review the revised CI-1 tariff PDF for current terms
Historical Rate Trends
Entergy Mississippi rates are adjusted annually through the MPSC-approved Formula Rate Plan and monthly through fuel and other rider records. The company has emphasized rate stability, keeping bills roughly 20% below the national average.
July 1, 2025
MPSC approved Entergy Mississippi's annual Formula Rate Plan effective the July 2025 billing cycle, keeping rates essentially flat (about a 0.04-cent decrease for a typical 1,000 kWh residential bill).
~flatOverall trend: Stable; the June 2025 annual plan kept rates essentially flat with a slight decrease for typical residential usage.
Next expected change: Next annual Formula Rate Plan review expected mid-2026 (MPSC), with monthly fuel/rider adjustments ongoing.
Cost Optimization Strategies
C&I customers at Entergy Mississippi can reduce costs by selecting the correct rate schedule for their load factor, managing demand, and leveraging interval data from DataLink.
Right-size the rate schedule
For: Large commercial and industrial customers
Match the schedule to your demand and load factor: high, steady loads may save under HLF-7; large loads may compare C-29 versus ALGS-10. The Business Development team can model options.
Demand and load-factor management
For: Commercial/industrial on demand-based schedules
Use DataLink 15-minute interval data to identify and shave demand peaks, improving load factor on demand-based schedules (C-29, HLF-7).
Demand response participation
For: Customers able to curtail load during peaks
Enroll in MVDR-1 market valued demand response or the smart thermostat program to earn credits for reducing load during peak events.
Monitor rider impacts
For: All C&I customers
Track ECR-4, MISO-2, GMR-1, and SRC-1 rider records, which adjust periodically and can materially affect total cost independent of base rates.
To implement these strategies, you need your 15-minute interval data. Learn how to download Entergy Mississippi interval data →
Frequently Asked Questions
How does a C&I customer get 15-minute interval data from Entergy Mississippi?▾
Commercial and industrial customers enroll in DataLink (Enerwise Energy Manager) by contacting the Entergy Business Center at 1-800-766-1648. Once provisioned, the DataLink portal at entergyenergymanager.powerportal.com provides raw 15-minute interval curves, daily summaries, and CSV/Excel export. DataLink is subject to the DTK-4 Datalink Rider.
Can a consultant or aggregator receive our usage and billing data directly?▾
There is no automated Share My Data portal. Third parties obtain data through customer-signed authorizations submitted to the Business Center, DataLink third-party access for interval data, or an EDI aggregator partnership for invoices. A Green Button Connect My Data API has been proposed to the MPSC but is not yet confirmed operational.
Which rate schedule applies to my commercial or industrial facility?▾
Entergy Mississippi C&I customers are typically served under GS-300 (General Lighting and Power), B-34 (Intermediate General Service), or C-29 (Large General Service), with options such as HLF-7 (High Load Factor) and ALGS-10 (Alternate Large General Service). The applicable schedule depends on demand level and load factor; contact the Business Development team to confirm eligibility.
How are Entergy Mississippi rates set and how often do they change?▾
Rates are regulated by the Mississippi Public Service Commission, primarily through the Formula Rate Plan (FRP-7) which is reviewed annually. In June 2025 the MPSC approved the annual plan keeping rates essentially flat (a roughly 0.04-cent decrease for a typical 1,000 kWh residential bill) effective the July billing cycle. Bills also include riders such as ECR (energy cost recovery), MISO, and grid modernization.
What riders affect a commercial bill?▾
Beyond the base rate schedule, bills are modified by riders including FRP-7 (Formula Rate Plan), ECR-4 (Energy Cost Recovery), MISO-2 (MISO cost & revenue), GMR-1 (Grid Modernization), SRC-1 (System Restoration Charge), and ATA-3 (Ad Valorem Tax). Optional riders such as HF-12 (Highly Fluctuating Load) or SS-12 (Standby/Supplementary) may apply based on load characteristics.
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