SiEnergy LP Rate Selection Guide
SiEnergy LP is one of Texas's fastest-growing natural gas distribution utilities, serving roughly 70,000 residential and commercial customers across the Houston, Dallas, and Austin metro areas. Acquired by Northwest Natural Holdings in January 2025, SiEnergy provides billing access through a Paymentus-powered portal but offers no Green Button, public API, interval data, or formal EDI program — third-party access runs through manual written-authorization requests.
Market Overview
SiEnergy is a regulated natural gas distribution utility in Texas. Its tariffs are filed with the Texas Railroad Commission (Tariff Operator Number 0048, gas distribution service GSD-1), with separate rate schedules for unincorporated areas (environs) and municipalities. Texas gas distribution remains a regulated monopoly service; there is no retail gas choice for SiEnergy customers.
Need to pull your actual usage data to compare rates? See the SiEnergy LP Data Access Guide →
Current Rate Schedules
SiEnergy LP (now a Northwest Natural Holdings subsidiary) is a Texas gas distribution utility serving roughly 70,000 customers in master-planned communities across the Houston, Dallas-Fort Worth, and Austin metros. Following a 2023 system-wide rate case settled uniformly across incorporated and unincorporated jurisdictions, base rates are simple two-part designs: a fixed monthly customer charge plus a single-block volumetric charge per Ccf. The actual commodity cost of gas passes through separately via the Gas Cost Recovery Adjustment (GCRA), and bills also carry a Weather Normalization Adjustment (residential), a Cost Recovery Rider (~$0.1180/Ccf), rate case expense recovery, surcharges, and taxes/franchise fees. SiEnergy's full tariff is filed with the Texas Railroad Commission as Operator 0048.
Effective: December 1, 2023 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| GSS-I / GSS-U – General Service Small | commercial | Non-residential customers with annual usage of 30,000 Ccf or less, in incorporated and unincorporated areas | $42.50/month customer charge plus $0.6958 per Ccf on all Ccf, plus GCRA gas cost pass-through, CRR rider, rate case expense recovery, surcharges, and taxes/franchise fees | $0.6958/Ccf distribution + GCRA gas cost |
| General Service Large / negotiated commercial service | commercial | Non-residential customers exceeding 30,000 Ccf annual usage | Larger commercial loads take service under tariff provisions beyond GSS — consult SiEnergy's RRC tariff filing (Operator 0048) and the company's regulatory links page for applicable schedules and current rates | — |
| GCRA – Gas Cost Recovery Adjustment (rider) | commercial | All sales customers | Monthly pass-through of SiEnergy's actual commodity gas cost per Ccf on top of base distribution rates; typically the largest variable component of the bill — see current GCRA filing for this month's rate | — |
Rate Recommendations by Use Case
Restaurant, retail, or amenity center in a SiEnergy master-planned community
Take General Service Small and manage consumption — with a flat $0.6958/Ccf single-block rate, every Ccf saved is worth the same.
GSS applies up to 30,000 Ccf/year with no declining blocks, so there is no volume discount to chase — efficiency and equipment maintenance are the levers. The GCRA gas cost rides on top of the distribution rate, so the all-in marginal cost per Ccf is meaningfully higher than the base tariff alone.
- Budget using distribution rate + current GCRA, not the base rate alone
- Schedule annual combustion tune-ups on cooking and water-heating equipment
- Verify the CRR rider and franchise fee lines on each bill — multi-rider Texas gas bills are error-prone
Commercial customer above 30,000 Ccf/year (hotels, large amenity complexes, light industrial)
Confirm correct rate schedule assignment above the GSS threshold and review the applicable large-service tariff terms with SiEnergy.
GSS-I/GSS-U eligibility caps at 30,000 Ccf annually. Accounts growing past the threshold should proactively confirm their schedule with SiEnergy and review the RRC tariff filing — misclassification either direction costs money, and large-volume terms may differ materially.
- Track trailing-12-month Ccf against the 30,000 threshold
- Request the applicable large-service schedule terms in writing from SiEnergy regulatory affairs
- Compare delivered cost against CenterPoint Entex or Atmos rates if your site sits near a service-territory boundary — useful context in rate proceedings
Cost Optimization Strategies
SiEnergy's single-block rate design leaves no rate-schedule arbitrage for most customers — cost control comes from managing consumption, understanding the rider stack (GCRA, WNA, CRR, RCE, surcharges, franchise fees) that often exceeds the base distribution charge, and engaging in the rate proceedings that periodically reset base rates. Texas cities exercise original jurisdiction inside their limits, so municipal rate ordinances matter as much as RRC filings.
Evaluate efficiency at the all-in Ccf cost
For: All sales customers
The bill stacks the base volumetric charge ($0.6511-$0.6958/Ccf), the GCRA commodity pass-through, the ~$0.1180/Ccf CRR rider, and percentage-based taxes and franchise fees. Efficiency projects — boiler tune-ups, pipe insulation, smart thermostats — should be evaluated against this full marginal rate, which can run well above $1/Ccf delivered.
Understand the Weather Normalization Adjustment
For: Residential customers (October-April billing)
Residential bills October through April carry a WNA that adds or credits charges to remove abnormal-weather effects, using area-specific weather factors (Houston, Austin, DFW airports). Budget and compare bills on a weather-normalized basis — a mild winter does not reduce the bill as much as raw degree days suggest.
Audit the rider stack on commercial bills
For: Commercial customers, especially multi-site operators across different cities
SiEnergy bills layer GCRA, CRR, rate case expense recovery, surcharges, and taxes/franchise fees on top of base rates. Reconcile each line against the published tariff schedules monthly — rider rates change on different cadences, and franchise fee percentages differ by municipality.
Participate in rate proceedings
For: Large commercial customers and municipalities
SiEnergy's 2023 Statement of Intent sought a 47% increase over adjusted revenues before cities negotiated the settled rates now in effect. Texas municipalities hold original jurisdiction inside city limits and routinely suspend and litigate these filings — large customers should track SiEnergy dockets at the RRC and through their city's regulatory affairs office, and intervene where material.
Time discretionary gas use against GCRA seasonality
For: Commercial customers with flexible gas loads
The GCRA passes through commodity costs that peak with winter demand. Facilities with schedulable gas loads (pool heating, batch processes) can shift consumption toward months with lower filed GCRA rates, and monitor the RRC GCRA filings to anticipate bill swings.
To implement these strategies, you need your 15-minute interval data. Learn how to download SiEnergy LP interval data →
Frequently Asked Questions
How do commercial customers access SiEnergy billing data?▾
Register at https://sienergy.epayub.com/ with your account number to view and download PDF bills, payment history, and monthly usage. The portal retains at least 3 years of bills; older statements require a customer service request at (888) 468-7007 Option 3.
Does SiEnergy provide interval gas data or Green Button?▾
No. Meters are read monthly per SiEnergy's Texas Railroad Commission tariff, and there is no 15-minute, 30-minute, or hourly data channel, no Green Button DMD/CMD, and no API. Monthly consumption on bills is the finest granularity available.
How can an energy consultant get a client's SiEnergy data?▾
Obtain the customer's signed written authorization, then submit a formal request to Customer Service at (888) 468-7007 Option 3 with the account number, authorization proof, your company details, and the data types and date range. Expect PDF statements within 5-10 business days. For ongoing access, have the customer download portal data on a recurring schedule.
Does SiEnergy support EDI transactions?▾
No public EDI trading partner program exists. SiEnergy files tariffs electronically with the Texas RRC per regulatory requirements, but that is not customer-facing EDI. If your operation needs 814/820/867/810 transactions, email businessdevelopment@sienergy.com with your D-U-N-S number and transaction requirements to inquire.
Will the NW Natural acquisition change SiEnergy data access?▾
Possibly. Northwest Natural Holdings acquired SiEnergy on January 7, 2025, and parent NW Natural offers a more capable portal (3+ years of bill history with PDF downloads). Platform consolidation could bring enhanced portal features or standardized third-party procedures, but nothing is documented yet — monitor sienergy.com for updates.
Where are SiEnergy's rates and tariffs published?▾
Tariffs are filed with the Texas Railroad Commission under Operator Number 0048 (gas distribution service GSD-1), accessible at rrc.texas.gov/gas-services/natural-gas-tariffs-rate-schedules. SiEnergy also posts rate schedules for environs and municipalities, statements of intent, and the Customer Bill of Rights at sienergy.com/regulatory-and-important-links.
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