ENSTAR Natural Gas Company Rate Selection Guide
ENSTAR Natural Gas Company is Alaska's largest natural gas distributor, serving roughly 153,000+ customers across Southcentral Alaska under TriSummit Utilities ownership. Regulated by the Regulatory Commission of Alaska (RCA), ENSTAR offers monthly billing data via its MyENSTAR portal but no interval data, Green Button, EDI, or public API.
ENSTAR Natural Gas Company Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| G2 | Commercial | $43.75/mo + $0.11830/CCF base + GCA $1.01091/CCF | Small to mid commercial gas loads |
| G3 | Large Commercial | $138.00/mo + $0.11642/CCF base + GCA $1.01091/CCF | Larger commercial buildings and multi-tenant facilities |
| G4 | Industrial | $662.75/mo + $0.08108/CCF base + GCA $1.01091/CCF | High-volume industrial loads where the low per-CCF base offsets the high fixed charge |
Market Overview
ENSTAR is the sole regulated natural gas distributor and supplier in Southcentral Alaska, overseen by the Regulatory Commission of Alaska. Customers cannot choose an alternate gas supplier; all rates are set via RCA tariff filings. The Supplier Gas Cost (GCA) is adjusted annually each July.
Need to pull your actual usage data to compare rates? See the ENSTAR Natural Gas Company Data Access Guide →
Current Rate Schedules
ENSTAR rates have four parts: a flat Customer Charge by meter size (G1-G4), a volumetric Service Charge/Base, the Regulatory Cost Charge (RCC, 0.130% of total bill), and the Supplier Gas Cost (GCA). The figures below are verified from ENSTAR's published rates page, effective July 1, 2025. C&I customers fall under G2, G3, and G4 depending on meter capacity. The GCA of $1.01091/CCF applies to all classes and is adjusted each July.
Effective: July 1, 2025 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| G1 — Smallest Meter (small commercial / residential) | commercial | Smallest meter class; primarily residential but applies to very small commercial accounts. | Customer Charge $20.00/account; Service Charge (Base) $0.18459/CCF; RCC 0.130% of bill; GCA $1.01091/CCF. | — |
| G2 — Commercial | commercial | Commercial accounts requiring a G2-size meter. | Customer Charge $43.75/account; Service Charge (Base) $0.11830/CCF; RCC 0.130% of bill; GCA $1.01091/CCF. | — |
| G3 — Large Commercial | commercial | Larger commercial accounts requiring a G3-size meter. | Customer Charge $138.00/account; Service Charge (Base) $0.11642/CCF; RCC 0.130% of bill; GCA $1.01091/CCF. | — |
| G4 — Industrial / Largest Meter | industrial | Largest meter class for high-volume industrial and large commercial loads. | Customer Charge $662.75/account; Service Charge (Base) $0.08108/CCF; RCC 0.130% of bill; GCA $1.01091/CCF. | — |
Rate Recommendations by Use Case
Mid-size commercial building (office/retail)
Commercial accounts on a G2 meter pay a modest fixed charge plus volumetric base and GCA.
G2 balances a low fixed charge ($43.75) against a moderate base rate for typical commercial heating loads.
- Confirm meter sizing matches actual load
- Use MyENSTAR PDF bills to track monthly CCF trends
- Budget for the July GCA reset
Large commercial / multi-tenant facility
Larger commercial loads on a G3 meter trade a higher fixed charge for a slightly lower base rate.
G3's $138 fixed charge is offset by a lower $0.11642/CCF base; worthwhile only at sustained higher volumes.
- Run a breakeven on fixed vs. volumetric vs. G2
- Compile 12 months of CCF before requesting a class change
- Contact Customer Service for historical usage
High-volume industrial load
Industrial users with large, steady gas demand benefit from the G4 class's low per-CCF base.
G4's $0.08108/CCF base is the lowest available, offsetting its $662.75 fixed charge at high throughput.
- Only choose G4 when sustained volume justifies the high fixed charge
- Pursue efficiency to cut the dominant GCA volumetric cost
- Engage ENSTAR Business Development for any custom data needs
Historical Rate Trends
ENSTAR filed a general rate case with the RCA on May 2, 2025, raising the residential G1 Customer Charge from $16.25 to $20.00 and base rates upward. An interim increase of roughly 5.00% took effect on billings beginning July 1, 2025. The current published rates reflect these effective-July-2025 figures.
July 1, 2025
Interim rate increase from the May 2025 RCA rate case; G1 Customer Charge raised from $16.25 to $20.00 and base rates increased.
+5.0%Overall trend: Increasing — driven by a 2025 general rate case and rising Cook Inlet gas supply costs reflected in the annually-adjusted GCA.
Next expected change: GCA is adjusted annually each July; the 2025 rate case may produce further changes pending final RCA approval.
Cost Optimization Strategies
Because ENSTAR gas billing is volumetric with no demand charges, C&I cost control centers on consumption reduction and correct meter-class assignment. The GCA pass-through is the dominant variable cost and is the same across classes.
Verify correct meter/rate class
For: All C&I gas accounts
Confirm the account is on the lowest-cost class for its actual load. Higher classes (G3/G4) carry larger fixed Customer Charges but lower per-CCF base rates, which only pay off at high volumes.
Reduce winter peak consumption
For: Commercial and industrial heating loads
Improve building envelope, tune heating systems, and add controls to cut CCF usage, directly lowering both base and GCA volumetric charges.
Track the annual July GCA adjustment
For: All C&I accounts
Budget for the annual GCA reset each July, which is the largest swing factor in gas cost, and time discretionary usage accordingly.
To implement these strategies, you need your 15-minute interval data. Learn how to download ENSTAR Natural Gas Company interval data →
Frequently Asked Questions
Does ENSTAR provide interval or hourly gas usage data for commercial accounts?▾
No. ENSTAR uses Itron AMR meters that capture only monthly billing reads. No 15-minute, 30-minute, or hourly interval data is available to any customer or third party. C&I energy analysis must rely on monthly CCF from billing records.
How can an energy consultant access our company's ENSTAR billing data?▾
Have the account holder complete the Account Holder Authorization to Third Party form (available in Customer Resources) specifying the consultant and scope. Submit it to ENSTAR by online form, mail, fax (907-334-7612), or in person. The consultant can then register for MyENSTAR access or request records from Customer Service.
Which rate class applies to a commercial or industrial gas account?▾
Class is assigned by meter size: G2 and G3 cover commercial loads and G4 covers the largest industrial loads. Higher classes carry larger fixed Customer Charges but lower per-CCF base rates, so the best class depends on your volume.
Does ENSTAR support EDI or a public API for billing integration?▾
No. There is no documented EDI program and no public API or developer portal. Large enterprise customers can contact ENSTAR Business Development (907-277-5551) to discuss potential custom bulk-export or batch-delivery arrangements on a case-by-case basis.
How often do ENSTAR gas rates change?▾
The Supplier Gas Cost (GCA) is adjusted annually each July. Base rates and customer charges change through RCA rate cases — most recently the May 2025 case, which produced an interim ~5% increase effective July 1, 2025.
Automate ENSTAR Natural Gas Company Rate Analysis with Nectar
Nectar continuously monitors your ENSTAR Natural Gas Company 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