City of Rock Hill Utilities (SC) Rate Selection Guide
The City of Rock Hill operates a municipal electric, water, sewer, and sanitation utility serving roughly 40,400 electric customers in greater Rock Hill, South Carolina, with AMI smart meters deployed across electric and water territories. Customers monitor consumption 24/7 through the CustomerConnect portal and manage bills via Customer Self Service, but the city offers no Green Button, EDI, API, or third-party authorization — data sharing beyond the portals is manual.
Market Overview
City Council-governed municipal utility outside SC PSC rate jurisdiction; bundled monopoly electric, water, sewer, and sanitation service. APPA RP3 Diamond Level certified.
Need to pull your actual usage data to compare rates? See the City of Rock Hill Utilities (SC) Data Access Guide →
Current Rate Schedules
Rock Hill Utilities is a municipally owned electric system whose rates are set by City Council rather than the SC Public Service Commission. Commercial customers are segmented strictly by metered demand: General Service Non-Demand (GS) up to 30 kW, General Service Demand (GD) from 30 kW to 750 kW, and Large Demand (LG) above 750 kW, with Economic Development Rates (EDR-2/EDR-3) available for qualifying new or expanded high-load-factor loads. Rock Hill purchases wholesale power and passes cost changes through via a purchased power cost adjustment. Per the city's published snapshot, residential service runs $9.97/month plus about 12.14¢/kWh — commercial dollar figures are published in the city's rate schedules (see tariff for current rates).
Effective: February 17, 2026 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| GS – General Service / Non-Demand | commercial | Commercial accounts up to 30 kW metered demand | Monthly customer charge plus flat per-kWh energy charge with purchased power cost adjustment; no demand charge — see city rate schedule for current figures | — |
| GD – General Service / Demand | commercial | Commercial accounts from 30 kW up to 750 kW metered demand | Monthly customer charge, per-kWh energy charge, and per-kW demand charge on metered billing demand, plus purchased power cost adjustment — see city rate schedule for current figures | — |
| LG – General Service / Large Demand | industrial | Existing customers over 750 kW metered demand | Customer, energy, and demand charges scaled for large loads with purchased power cost adjustment — see city rate schedule for current figures | — |
| EDR-2 / EDR-3 – Economic Development Rates | industrial | EDR-2: new loads with minimum 70% load factor and 250 kW metered demand; EDR-3: existing customers adding new load of 750 kW at 45%+ load factor | Discounted rates negotiated to attract or retain qualifying high-load-factor commercial/industrial load — contact Rock Hill economic development and see tariff for terms | — |
Rate Recommendations by Use Case
Mid-size commercial facility (30-750 kW)
Take General Service Demand (GD) and run an active demand-management program, since the per-kW charge is the main controllable line item.
Once metered demand crosses 30 kW, Rock Hill bills a separate demand component on the monthly peak. Rock Hill's AMI deployment means interval data exists for these accounts, so peaks can actually be diagnosed and managed through the CustomerConnect portal.
- Use CustomerConnect AMI usage views to identify what sets your monthly peak
- Stagger HVAC and equipment startups after weekend or holiday shutdowns
- Verify each bill's metered demand against your own records — demand misreads are worth disputing
New manufacturing or distribution facility siting in Rock Hill
Negotiate the Economic Development Rate before committing to the site — EDR-2 requires 250 kW demand at 70% load factor.
Rock Hill actively competes for industrial load with discounted EDR schedules, and EDR-3 extends discounts to existing customers adding 750 kW of new load at 45%+ load factor. These discounts are negotiated upfront — they are rarely retroactive.
- Engage Rock Hill Utilities and the city's economic development office before site selection
- Model your expected load factor honestly — falling below the EDR threshold can forfeit the discount
- Pair the EDR with city/county incentive packages for maximum effect
Small retail, office, or restaurant (under 30 kW)
Stay under the 30 kW threshold on the GS non-demand rate and focus on consumption efficiency.
GS has no demand charge, so a brief equipment-driven spike that pushes metered demand past 30 kW moves the account to GD and adds a demand line permanently. Small accounts near the threshold should manage peaks deliberately.
- Avoid simultaneous startup of HVAC, kitchen, and process equipment
- Watch metered demand on monthly bills — trending toward 30 kW is the early warning
- Use LED retrofits and smart thermostats to cut flat per-kWh consumption
Public school or municipal facility
Confirm assignment to the Public School (PS) rate where eligible rather than standard commercial schedules.
Rock Hill maintains a dedicated Public School rate class. Schools mis-assigned to GD or LG may overpay; rate class audits are a no-cost savings check.
- Audit each campus meter's rate class annually
- Schedule summer deep-setback programs — school load profiles reward aggressive unoccupied-period control
- Request AMI interval data through the city to verify scheduling changes actually reduce peaks
Cost Optimization Strategies
Rock Hill's demand-tiered rate design (GS/GD/LG) makes the monthly kW peak the central cost driver for any account above 30 kW, and the city's AMI rollout gives customers the interval visibility to manage it. Because rates are set by City Council and wholesale costs flow through a purchased power adjustment, customers should track council rate actions and the adjustment line alongside their own load management.
Manage monthly peak demand
For: GD and LG customers (30 kW and above)
GD and LG customers pay a per-kW charge on metered billing demand. Use AMI interval data from CustomerConnect to find peak-setting events, then sequence equipment starts, apply demand limiting on HVAC, and shift discretionary loads off the peak window.
Defend the 30 kW GS threshold
For: Small commercial accounts near 30 kW
Accounts that stay under 30 kW metered demand avoid demand billing entirely. For small commercial customers near the line, interlocking large loads so they cannot run simultaneously is often a trivial controls change that prevents reclassification to GD.
Pursue Economic Development Rates for qualifying load
For: Industrial customers adding significant new load
EDR-2 (250 kW, 70% load factor) and EDR-3 (750 kW new load, 45% load factor for existing customers) provide negotiated discounts for high-load-factor industrial load. Expansions should be structured and timed to qualify before equipment orders are placed.
Use AMI data for efficiency verification
For: All commercial customers
Rock Hill's smart meter deployment means hourly/interval consumption exists for commercial accounts. Pull interval data through CustomerConnect to baseline usage, verify savings from lighting and HVAC projects, and catch after-hours waste that flat monthly bills hide.
Track City Council rate actions and the purchased power adjustment
For: All C&I customers
Rates are set by City Council, and wholesale power cost changes pass through via adjustment. Monitor council agendas for rate ordinance changes and reconcile the adjustment line on large bills — budget forecasts should use the all-in effective rate, not just base tariff figures.
To implement these strategies, you need your 15-minute interval data. Learn how to download City of Rock Hill Utilities (SC) interval data →
Frequently Asked Questions
How do commercial customers monitor energy usage at Rock Hill?▾
Through CustomerConnect (cityofrockhill.com/departments/utilities/customerconnect) using the same login as the Customer Self Service portal. The AMI-fed portal shows 24/7 consumption graphs and comparison charts, supports budget and anomaly email alerts, and includes the Energy Advisor tool. For multiple authorized users on one account, email customerconnect@cityofrockhillsc.gov.
What interval granularity does Rock Hill's AMI provide?▾
Undocumented in public materials. Smart meters with two-way wireless communication cover all electric and water territories, and CustomerConnect renders graphs that are likely hourly or daily aggregations. Commercial customers historically had 30-minute interval data — ask Accounts Management at 803-329-8729 to confirm what your meter supports.
Can a consultant or aggregator access Rock Hill data on a customer's behalf?▾
Not through any supported channel — there is no Green Button, API, OAuth authorization, or aggregator partnership. The practical workflow is customer-shared exports: bill PDFs from the CSS portal and usage views from CustomerConnect, imported manually. Credential-based bill-scraping aggregators may work if compatible with the city's billing system.
Does Rock Hill support EDI or Green Button?▾
No to both. Rock Hill is not on the DOE EERE list of utilities offering EDI and publishes no trading partner procedures, and it is not in the Green Button Alliance directory with no ESPI/CMD compliance announced. Custom arrangements can be raised at 803-329-5500 but are unlikely.
What does Nectar's roadmap support level mean for Rock Hill accounts?▾
Rock Hill is on Nectar's roadmap: automated ingestion is planned but not yet productized. Today, Nectar works with Rock Hill data via customer-downloaded CSS bill PDFs and CustomerConnect usage exports while native support is built.
Automate City of Rock Hill Utilities (SC) Rate Analysis with Nectar
Nectar continuously monitors your City of Rock Hill Utilities (SC) rate options and alerts you when a better schedule is available. Save 10-30% on energy costs.
Nectar for Energy & Sustainability Teams
Managing utility costs for commercial or industrial buildings? Nectar offers a free rate analysis — we'll review your current rate schedules and identify where switching tariffs or shifting load can save 10-30%.
Get a Free Rate AnalysisNectar for Energy Brokers & Consultants
Advising clients on rate optimization? Nectar works with energy consultants who need reliable interval data and automated rate comparison tools.
Partner with Us