Southern Pine Electric Cooperative Rate Selection Guide
Southern Pine Electric Cooperative is a member-owned electric distribution cooperative serving roughly 70,771 meters across 11 Mississippi counties. Billing and daily usage data are available through the MyPower / Meridian member portal and mobile app, but the cooperative does not currently offer Green Button, public APIs, or a formal third-party data program.
Southern Pine Electric Cooperative Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| RS-B Small Commercial | Commercial | $1.90/day + $0.09927/kWh | Small single-phase commercial sites with modest load |
| RS-SGS Small General Service | Commercial | $60/mo + $0.09927/kWh | Small three-phase / light industrial, no demand metering |
| RS-GS General Service | Commercial | $69/mo + $8.00/kW + $0.087/kWh | Three-phase commercial/industrial under 75 kVA |
| RS-LGS Large General Service | Industrial | $74/mo + $9.00/kW + $0.0785/kWh | Mid-size industrial 75 to <1,000 kVA |
| RS-LGS-2 Large General Service | Industrial | $145/mo + $10.00/kW + $0.072/kWh | Large industrial 1,000 kVA and above |
Market Overview
Mississippi is a regulated electricity market with no retail choice. Southern Pine Electric is a member-owned distribution cooperative that buys wholesale power from Cooperative Energy and resells it to members at board-approved rates. Commercial and industrial customers cannot select a competitive energy supplier; cost optimization comes from rate-schedule selection, demand and power-factor management, and on-site generation.
Need to pull your actual usage data to compare rates? See the Southern Pine Electric Cooperative Data Access Guide →
Current Rate Schedules
Southern Pine Electric publishes its active rate schedules (effective January 1, 2026) on its Rates page. Commercial and industrial members are served under RS-B, RS-SGS, RS-GS, RS-LGS, RS-LGS-2, and the Commercial/Industrial Coincident Peak schedules. All schedules are subject to an Environmental Compliance Charge (base 2.87 mills/kWh) and a Cost of Power Adjustment passed through from the wholesale supplier. The values below are verified directly from the cooperative's published tariff PDFs.
Effective: January 1, 2026 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| RS-B Small Commercial Service | commercial | Single-phase commercial buildings (retail, salons, offices, auto repair, convenience stores, etc.). | Service charge $1.90/day; Energy charge $0.09927/kWh. Plus Environmental Compliance Charge and Cost of Power Adjustment. (Effective 1/1/2026.) | — |
| RS-SGS Small General Service | commercial | Small commercial, light industrial, community buildings, three-phase residential, and large farm service. | Service charge $60.00/month; Energy charge $0.09927/kWh; no demand charge. Plus ECC and Cost of Power Adjustment. (Effective 1/1/2026.) | — |
| RS-GS General Service | commercial | Commercial, industrial, and large three-phase farm service less than 75 kVA. | Service charge $69.00/month; Demand charge $8.00/kW; Energy charge $0.087/kWh. Billing demand = 15-min peak, min 70% of 11-month peak (ratchet); power-factor adjusted below 95%. (Effective 1/1/2026.) | — |
| RS-LGS Large General Service | industrial | Commercial, industrial, and large three-phase farm service of 75 kVA up to (but less than) 1,000 kVA. | Service charge $74.00/month; Demand charge $9.00/kW; Energy charge $0.0785/kWh. 70% demand ratchet and power-factor adjustment apply; $0.40/kW primary-service discount available. (Effective 1/1/2026.) | — |
| RS-LGS-2 Large General Service | industrial | Commercial, industrial, and large three-phase farm service of 1,000 kVA or greater. | Service charge $145.00/month; Demand charge $10.00/kW; Energy charge $0.072/kWh. 70% demand ratchet and power-factor adjustment apply; $0.40/kW primary-service discount available. (Effective 1/1/2026.) | — |
| RS-CICP1 / RS-CICP2 Commercial-Industrial Coincident Peak | industrial | Large commercial/industrial loads billed on a coincident-peak demand basis. | Coincident-peak demand rate structure (specific $ values not extracted here; see tariff PDF). Effective 1/1/2026. | — |
Rate Recommendations by Use Case
Mid-size manufacturer (75-1,000 kVA)
Facilities in this range are served under RS-LGS and should focus on demand and power-factor management.
RS-LGS ($74/mo, $9.00/kW, $0.0785/kWh) applies to 75 to <1,000 kVA. The $9/kW demand charge and 70% ratchet make peak control the biggest lever.
- Track 15-minute demand and shave avoidable peaks
- Keep power factor at or above 95% to dodge the penalty
- Evaluate primary service for the $0.40/kW discount
Large industrial / data center (>=1,000 kVA)
The largest loads belong on RS-LGS-2 and should also model the Commercial/Industrial Coincident Peak schedules.
RS-LGS-2 offers the lowest energy charge ($0.072/kWh) with a $10.00/kW demand charge; coincident-peak schedules may benefit loads that can curtail during system peaks.
- Model RS-LGS-2 vs. RS-CICP for your load profile
- Manage the coincident-peak window if on a CICP schedule
- Budget for Cost of Power Adjustment volatility
Small business / retail site
Small single-phase or three-phase commercial sites use RS-B or RS-SGS, which have no demand charge.
Both carry a $0.09927/kWh energy charge with only a fixed service charge ($1.90/day for RS-B, $60/mo for RS-SGS), so reducing kWh is the main saver.
- Confirm single- vs three-phase service to pick RS-B vs RS-SGS
- Invest in lighting and HVAC efficiency to cut kWh
- Enroll in Levelized Billing for budget predictability
Energy/sustainability team needing usage data
Teams that need granular interval data should plan around the cooperative's limited data tooling.
There is no Green Button or API; daily usage is in the portal and interval data requires a direct request. Build a manual or aggregator-based data pipeline.
- Request 15-minute interval data via 800-231-5240
- Check Nectar (docs.nectarclimate.com) for automated bill capture
- Establish a written data-sharing arrangement for ongoing feeds
Historical Rate Trends
Southern Pine's active C&I schedules carry an effective date of January 1, 2026, indicating a rate update at the start of 2026. Retail rates are set by the member-elected board rather than the Mississippi PSC, and the Cost of Power Adjustment and Environmental Compliance Charge allow the cooperative to pass through changes in Cooperative Energy's wholesale power cost between full rate updates.
January 1, 2026
All active C&I rate schedules (RS-B, RS-SGS, RS-GS, RS-LGS, RS-LGS-2, RS-CICP) reissued with a January 1, 2026 effective date.
n/aOverall trend: Stable to modestly increasing, tracking wholesale power costs from Cooperative Energy.
Next expected change: Next full schedule update likely effective January 1, 2027; interim changes possible via the Cost of Power Adjustment.
Cost Optimization Strategies
Because there is no retail supplier choice, C&I cost optimization at Southern Pine centers on choosing the right rate schedule, managing peak demand, and maintaining a high power factor.
Right-size the rate schedule
For: All C&I
Match the schedule to connected kVA - moving from RS-GS to RS-LGS or RS-LGS-2 as load grows lowers the energy charge (from $0.087 down to $0.072/kWh).
Demand management / peak shaving
For: Demand-metered C&I (RS-GS, RS-LGS, RS-LGS-2)
Stagger large equipment startups and shift loads to reduce the 15-minute billing demand; the 70% ratchet means a single high peak inflates demand charges for up to 11 months.
Power-factor correction
For: Demand-metered C&I
Install capacitors to keep power factor at or above 95% and avoid the demand penalty that increases billed demand proportionally to the PF shortfall.
Take primary service
For: RS-LGS, RS-LGS-2
Where feasible, take service at primary distribution voltage on LGS schedules to capture the $0.40/kW demand discount.
To implement these strategies, you need your 15-minute interval data. Learn how to download Southern Pine Electric Cooperative interval data →
Frequently Asked Questions
Can a commercial or industrial customer get 15-minute interval data from Southern Pine Electric?▾
Not through the self-service portal. The MyPower portal shows daily usage only. C&I customers needing 15-minute or hourly interval data should call Member Services at 800-231-5240 and request interval data delivery, which may be provided via email, SFTP, or a custom arrangement.
Does Southern Pine support Green Button or a public API for energy data?▾
Southern Pine is not in the Green Button Alliance directory and does not publish a developer API of its own. Nectar provides API access to Southern Pine billing and interval data — see docs.nectarclimate.com. Energy managers can also rely on the portal or customer-authorized requests.
Which rate schedule applies to a commercial or industrial facility?▾
It depends on connected load. Small single-phase commercial uses RS-B; small three-phase/light industrial uses RS-SGS; General Service (RS-GS) covers three-phase loads under 75 kVA; Large General Service (RS-LGS) covers 75 to under 1,000 kVA; and RS-LGS-2 covers 1,000 kVA and greater. Large loads can also evaluate the Commercial/Industrial Coincident Peak schedules (RS-CICP1/CICP2).
How can a third-party consultant access a customer's Southern Pine billing data?▾
Have the account holder sign an authorization letter specifying the third party and data scope, then contact Member Services at 800-231-5240 (Commercial Services). The cooperative verifies the authorization and delivers data in a negotiated format; allow about 2-4 weeks for setup.
Is there a demand charge for C&I customers?▾
Yes, for demand-metered schedules. RS-GS is $8.00/kW, RS-LGS is $9.00/kW, and RS-LGS-2 is $10.00/kW (effective Jan 1, 2026). Billing demand is the 15-minute peak, but no less than 70% of the highest demand in the preceding 11 months (a ratchet), and is adjusted for power factor below 95%.
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