AES Indiana Rate Selection Guide
AES Indiana (formerly Indianapolis Power & Light) is the investor-owned electric utility serving Indianapolis and Central Indiana, regulated by the Indiana Utility Regulatory Commission. With full AMI deployment, it offers 15-minute interval data to C&I customers through PowerView 2.0 and Clean Energy Navigator, though it has no Green Button, ESPI, or public API.
AES Indiana Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| Rate SS | Small commercial | Customer charge + energy charge; riders apply | Small businesses at secondary voltage |
| Rate SL | Large commercial | Customer charge + energy + demand ($/kW) | Larger commercial sites at secondary voltage |
| Rate PL | Industrial | Customer + energy + demand with primary discount | Facilities able to take primary-voltage service |
| Rate HL | Industrial | Demand-dominant; lower energy charge | High, steady load-factor industrial loads |
Market Overview
AES Indiana operates as a regulated, vertically integrated monopoly under the Indiana Utility Regulatory Commission (IURC). It owns generation, transmission, and distribution within its territory and there is no retail electric choice in Indiana. Rates are established through IURC base rate cases (most recently Cause No. 45911) plus riders/trackers (fuel, DSM, environmental, TDSIC).
Need to pull your actual usage data to compare rates? See the AES Indiana Data Access Guide →
Current Rate Schedules
AES Indiana's C&I rates are set by the IURC and published in its tariff (Rate Schedules). Large C&I schedules include Rate SL (Secondary Large), Rate PL (Primary Large), Rate HL (High Load Factor at primary/sub-transmission/transmission voltage), Rate PH (Process Heating), and Rate CSC (Customer Specific Contracts). Small C&I schedules include Rate SS (Secondary Small). C&I bills combine a monthly customer charge, an energy charge ($/kWh), and a demand charge ($/kW), modified by riders (fuel cost, DSM, environmental, and the TDSIC distribution/storage improvement charge). Specific per-unit dollar figures vary by voltage and rider period; consult the current tariff sheets for exact charges.
Effective: April 17, 2024 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Rate SS - Secondary Service (Small) | commercial | Small commercial/industrial customers taking secondary-voltage service. | Monthly customer charge plus energy charge ($/kWh); demand-based components apply above defined thresholds. Subject to fuel, DSM, environmental, and TDSIC riders. See tariff for current $ figures. | — |
| Rate SL - Secondary Service (Large) | commercial | Large commercial/industrial customers taking service at secondary distribution voltage. | Monthly customer charge, energy charge ($/kWh), and demand charge ($/kW). Riders apply. Consult tariff sheets for current per-unit charges. | — |
| Rate PL - Primary Service (Large) | industrial | Large customers taking service at primary distribution voltage. | Customer charge, energy charge, and demand charge with primary-voltage discount versus secondary; riders apply. See tariff for current figures. | — |
| Rate HL - High Load Factor | industrial | High-load-factor customers served at primary, sub-transmission, or transmission voltage. | Demand-dominant structure designed for high, steady load factor; lower energy charges with significant demand charges. Riders apply. Consult tariff for current per-kW/per-kWh figures. | — |
| Rate PH - Process Heating | industrial | Industrial customers using electricity for qualifying process-heating loads. | Specialized energy/demand structure for process-heating applications; riders apply. See tariff for details. | — |
| Rate CSC - Customer Specific Contracts | industrial | Large eligible customers negotiating individually approved contract terms. | Individually negotiated, IURC-approved contract pricing for qualifying large loads. | — |
Rate Recommendations by Use Case
Multi-site commercial portfolio
Centralize all locations in Clean Energy Navigator and benchmark across sites.
Clean Energy Navigator consolidates multi-site interval and billing data, making cross-site demand management practical.
- Authorize your energy consultant as a portal user
- Export CSV monthly for external analysis
- Watch coincident demand peaks across sites
Large industrial facility
Evaluate primary-voltage (PL) or High Load Factor (HL) service and aggressive peak management.
Higher-voltage and high-load-factor schedules lower per-unit charges; demand control compounds the savings.
- Use PowerView 2.0 15-minute data to target peaks
- Assess transformer ownership economics for primary service
- Model HL eligibility from your load factor
Energy/sustainability team needing data feeds
Use Nectar or authorized PowerView/Clean Energy Navigator exports since there is no public API or Green Button.
AES Indiana has no OAuth/ESPI API; aggregators and portal CSV exports are the practical machine-readable paths.
- Set up Nectar for automated retrieval — see docs.nectarclimate.com
- Standardize CSV ingestion workflows
- Contact Business Development (317-261-8444) for enterprise integration
Very large negotiated load
Explore a Customer Specific Contract (CSC) for tailored, IURC-approved pricing.
CSCs allow individualized terms for qualifying large loads that standard schedules cannot match.
- Engage AES Indiana Business Development early
- Bring detailed load and growth projections
- Coordinate timing with IURC approval cycles
Historical Rate Trends
AES Indiana's base rates were last reset in its 2023 base rate case, Cause No. 45911. The IURC approved an uncontested settlement on April 17, 2024, raising total annual revenue by approximately 4.8% (about $71.0 million), well below the utility's original ~8.4% ($134.2M) request. AES Indiana filed a new base rate case in 2025 that remained pending into 2026, and rates are further adjusted between cases via riders/trackers (fuel, DSM, environmental, TDSIC).
April 17, 2024
IURC approved Cause No. 45911 settlement increasing total annual revenue ~4.8% ($71.0M), below the original ~8.4% request.
+4.8%Overall trend: Upward, driven by grid modernization (AMI/Smart Grid), generation transition, and infrastructure investment.
Next expected change: Outcome of the pending 2025 base rate case and periodic rider/tracker updates (e.g., the annual rate update compliance filing).
Cost Optimization Strategies
Because demand charges and voltage-tiered pricing dominate AES Indiana C&I bills, the highest-impact strategies center on peak demand management, load-factor improvement, and choosing the correct voltage-level schedule.
Peak demand management
For: Rate SL, PL, HL
Use 15-minute interval data from PowerView 2.0 / Clean Energy Navigator to identify and shave coincident peaks that set monthly demand ($/kW) charges.
Take service at higher voltage
For: Large facilities with suitable infrastructure
Where feasible, take primary or sub-transmission service (Rate PL / HL) to obtain lower per-unit charges than secondary service.
Improve load factor
For: High, steady-load industrial customers
Flatten the load profile to qualify for and benefit from the High Load Factor (HL) schedule's lower energy charges.
Negotiate a Customer Specific Contract
For: Qualifying large industrial loads
Very large eligible loads can pursue an IURC-approved CSC for tailored pricing.
To implement these strategies, you need your 15-minute interval data. Learn how to download AES Indiana interval data →
Frequently Asked Questions
Can my business get 15-minute interval data from AES Indiana?▾
Yes. C&I customers can access actual 15-minute interval data through PowerView 2.0 and Clean Energy Navigator, with CSV/Excel export. Residential customers see daily summaries. There is no Green Button or public API, so machine-readable data comes from portal exports or from Nectar, which provides API access to this utility's billing and interval data — see docs.nectarclimate.com.
Does AES Indiana support Green Button or an API for third-party access?▾
No. AES Indiana has not implemented Green Button Download My Data, Connect My Data, ESPI, or a documented public API. Third-party access is granted by manually provisioning vendor logins in PowerView 2.0 or Clean Energy Navigator, or via Nectar, which provides API access to this utility's billing and interval data — see docs.nectarclimate.com.
How are AES Indiana C&I rates structured?▾
C&I bills combine a monthly customer charge, an energy charge ($/kWh), and (for larger accounts) a demand charge ($/kW), with voltage-tiered schedules (SS, SL, PL, HL, PH) and IURC-approved riders/trackers. Exact per-unit figures are in the current tariff sheets at aesindiana.com/rates-tariffs.
Can I shop for a competitive electricity supplier?▾
No. Indiana is a regulated, vertically integrated market with no retail electric choice. AES Indiana is the sole provider in its territory and rates are set by the IURC.
When were AES Indiana's rates last changed?▾
Base rates were reset in Cause No. 45911; the IURC approved the settlement on April 17, 2024 (~4.8% / $71.0M revenue increase). A new base rate case filed in 2025 was pending into 2026, and riders/trackers adjust rates between cases.
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