Spire Missouri Inc. Rate Selection Guide
Spire Missouri is a regulated natural gas distribution utility (a subsidiary of Spire Inc.) serving roughly 956,000 customers across the St. Louis and Kansas City regions. Customers access billing and monthly usage through the My Account portal; Green Button is committed but not yet implemented, and structured third-party data is available programmatically through Nectar.
Spire Missouri Inc. Rate Schedule Comparison
| Schedule | Type | Rate | Best For |
|---|---|---|---|
| Small General Gas Service (SGS) | Commercial | $40.72/mo + $0.24021/Ccf (East) | C&I under 10,000 Ccf/yr |
| Large General Gas Service (LGS) | Industrial | $145.43/mo + $0.15689/Ccf (East) | C&I 10,000+ Ccf/yr |
| Large Volume Service (LV) | Industrial | $1,063.73/mo + $1.12/Ccf demand + tiered commodity | Demand ≥250 Ccf, 60,000+ Ccf/yr |
| Transportation Service (TS/ITS) | Industrial | Distribution-only delivery charges | Customer-procured gas supply |
Market Overview
MoPSC-regulated gas distribution. Bundled sales customers buy gas under approved tariffs (RS, SGS, LGS, LV); competitive gas supply is limited to certified marketers and large transport customers.
Need to pull your actual usage data to compare rates? See the Spire Missouri Inc. Data Access Guide →
Current Rate Schedules
Spire Missouri's rates are set by the MoPSC and published in the P.S.C. MO. No. 9 tariff. C&I gas service ranges from Small General Gas Service (SGS, under 10,000 Ccf/yr) to Large General Gas Service (LGS, 10,000+ Ccf/yr) and Large Volume Service (LV, demand 250+ Ccf and 60,000+ Ccf/yr). Figures below are the approved base delivery charges in the No. 9 tariff (eff. Jan 1, 2023, Spire East unless noted); a Purchased Gas Adjustment (PGA) and Infrastructure System Replacement Surcharge (ISRS) are layered on top, and a subsequent 2024 rate case raised charges further.
Effective: January 1, 2023 · Full Tariff Book →
| Schedule | Type | Applicability | Structure | Rate |
|---|---|---|---|---|
| Small General Gas Service (SGS) – Spire East | commercial | Commercial/industrial customers with annual consumption under 10,000 Ccf. | Customer charge $40.72/month plus $0.24021 per Ccf delivery (Spire East, P.S.C. MO. No. 9). Spire West SGS: $43.70/month with block delivery ($0.18592/Ccf first 5,000; $0.23241/Ccf over 5,000). PGA and ISRS additional. | — |
| Large General Gas Service (LGS) – Spire East | industrial | Commercial/industrial customers with annual consumption of 10,000 Ccf or more. | Customer charge $145.43/month plus $0.15689 per Ccf delivery (Spire East, P.S.C. MO. No. 9). Spire West LGS: $189.61/month plus $0.15823 per Ccf. PGA and ISRS additional. | — |
| Large Volume Service (LV) – Spire East | industrial | Firm gas uses (incl. cogeneration / boiler plant) contracting for separately metered service with billing demand ≥250 Ccf and annual usage ≥60,000 Ccf. | Customer charge $1,063.73/month, demand charge $1.12 per billing-demand Ccf, plus commodity charge $0.03008/Ccf (first 36,000 Ccf) and $0.00882/Ccf above (Spire East, P.S.C. MO. No. 9). PGA and ISRS additional. | — |
| Transportation Service (TS / ITS) | industrial | Large customers procuring their own gas supply and paying Spire only for distribution/transport (Transportation Service and Intrastate Transportation Service). | Distribution-only charges (customer + demand/volumetric delivery); commodity gas is bought separately by the customer or its marketer. See the tariff for size-specific delivery charges. | — |
Rate Recommendations by Use Case
Small commercial facility
Restaurants, small offices, retail with annual gas use under 10,000 Ccf.
SGS fits customers under 10,000 Ccf/yr. Spire East SGS is a flat $0.24021/Ccf delivery plus a $40.72 customer charge; Spire West uses a declining block. The PGA commodity cost is the largest variable, so usage reduction matters most.
- Track monthly usage in My Account to spot seasonal spikes
- Watch the PGA component, which drives most bill volatility
- Confirm you are below the 10,000 Ccf/yr LGS threshold
Large commercial / light industrial
Facilities using 10,000+ Ccf/yr but below Large Volume thresholds.
LGS lowers the per-Ccf delivery charge (~$0.157/Ccf) versus SGS in exchange for a higher customer charge ($145.43 East / $189.61 West). The crossover makes LGS cheaper as volume grows past ~10,000 Ccf/yr.
- Spire re-determines class annually by Dec 31 — verify you're on the right schedule
- Compare LGS vs SGS total cost at your actual annual volume
- Factor ISRS and PGA into any budget model
Large volume / industrial boiler & cogen
Plants with billing demand ≥250 Ccf and 60,000+ Ccf/yr, including cogeneration and boiler plant use.
LV adds a demand charge ($1.12/Ccf of billing demand) and a declining commodity charge ($0.03008/Ccf to 36,000, then $0.00882/Ccf), rewarding high, steady throughput. Very large users should evaluate Transportation Service to procure gas competitively and pay Spire distribution only.
- Model LV demand charge against your peak-day billing demand
- Evaluate Transportation Service with a gas marketer for commodity savings
- Negotiate via the Missouri Gas Exchange for nominations/settlement
Energy consultant / multi-site portfolio
Advisors managing data across many Spire Missouri accounts.
Spire has no third-party portal, so Nectar is the compliant route for monthly billing/usage across a portfolio without password sharing. Interval data is not available from Spire today.
- Use Nectar for consent-based, multi-account monthly data (docs.nectarclimate.com)
- Set client expectations: monthly granularity only until Green Button launches
- Pull tariff sheets from EFIS for rate-case-accurate modeling
Historical Rate Trends
Spire Missouri's base delivery rates are reset through periodic MoPSC rate cases; the P.S.C. MO. No. 9 schedule took effect January 1, 2023 (GR-2022-0179). A subsequent general rate case (GR-2024-0106/0107) was approved in late 2024, raising the average Spire Missouri East residential bill by roughly 10%, with corresponding C&I delivery charge increases. The ISRS surcharge and the Purchased Gas Adjustment also change periodically.
January 1, 2023
P.S.C. MO. No. 9 tariff took effect (GR-2022-0179), setting current base SGS/LGS/LV delivery charges.
n/aDecember 1, 2024
MoPSC general rate case (GR-2024-0106/0107) approved, raising the average Spire Missouri East residential bill by about 10% (~$8.21/month) with corresponding C&I increases.
~+10% (residential avg)Overall trend: Upward, driven by infrastructure replacement (ISRS) and successive rate cases; commodity gas cost passes through the PGA without markup and varies seasonally.
Next expected change: ISRS surcharge updates filed periodically; Spire continues to file general rate cases at the MoPSC.
Cost Optimization Strategies
For Spire Missouri C&I customers the biggest levers are choosing the correct rate class at your volume, considering Transportation Service for large loads, and managing seasonal/peak consumption since commodity cost passes through the PGA.
Right-size the rate class
For: Commercial and industrial
Compare SGS vs LGS total cost at your actual annual Ccf; LGS's lower per-Ccf delivery charge beats SGS once volume passes roughly 10,000 Ccf/yr despite its higher customer charge.
Evaluate Transportation Service
For: Large Volume / transport-eligible
Large customers can procure gas from a marketer and pay Spire distribution only, potentially beating bundled commodity cost — managed through the Missouri Gas Exchange.
Manage peak demand (LV)
For: Large Volume customers
On Large Volume Service the demand charge is set by billing demand; flattening peak-day usage reduces the $1.12/Ccf demand component.
Reduce consumption / efficiency
For: All C&I
Because commodity cost flows through the PGA, efficiency and weatherization directly cut the largest variable part of the bill.
To implement these strategies, you need your 15-minute interval data. Learn how to download Spire Missouri Inc. interval data →
Frequently Asked Questions
Can my business download interval or hourly gas data from Spire Missouri?▾
No. Spire's ultrasonic AMI meters transmit hourly reads to the utility, but interval data is not exposed to customers. The My Account portal shows only monthly usage charts. For structured monthly data, use Nectar's API (docs.nectarclimate.com).
Does Spire Missouri support Green Button?▾
Not yet. Spire is listed as committed to Green Button on OpenEI but has not implemented Download My Data or Connect My Data, and no launch date has been announced.
How can a consultant access my Spire data without my password?▾
Use Nectar. You authorize access for your Spire account through Nectar's consent flow, and your consultant receives monthly billing and usage data through Nectar's platform — no password sharing and revocable anytime. See docs.nectarclimate.com.
Which gas rate class applies to my facility?▾
Small General Gas Service (SGS) for under 10,000 Ccf/yr, Large General Gas Service (LGS) for 10,000+ Ccf/yr, and Large Volume Service (LV) for billing demand of 250+ Ccf with 60,000+ Ccf/yr. Spire re-determines your class annually by December 31.
Can large customers buy their own gas supply?▾
Yes. Large customers can elect Transportation Service (TS/ITS), procure gas from a certified marketer, and pay Spire only for distribution, managed through the Missouri Gas Exchange. Residential and typical small commercial customers cannot shop for gas supply.
What charges appear beyond the base delivery rate?▾
A Purchased Gas Adjustment (PGA) passes through the commodity gas cost with no markup, an Infrastructure System Replacement Surcharge (ISRS) recovers infrastructure investment, and applicable taxes apply. These layer on top of the customer and per-Ccf delivery charges.
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