# HEATING VALUE

**Citation:** Tenn. Comp. R. & Regs. 1220-04-05-.35  
**Type / status:** regulation / current  
**Agency:** Tennessee Public Utility Commission  
**Effective:** Not stated  
**Published:** Not stated

(1) Each utility billing its customers on a term basis, or distributing other than straight undiluted natural gas, or distributing from liquefied natural gas (LNG) shall have available a daily record of the BTU value of the gas being sold. Such values may be obtained either from a utility’s own reco

## Document text

(1) Each utility billing its customers on a term basis, or distributing other than straight undiluted natural gas, or distributing from liquefied natural gas (LNG) shall have available a daily record of the BTU value of the gas being sold. Such values may be obtained either from a utility’s own recording calorimeters or from the recording calorimeter of the transmission company which is the supplier.

(2) All peak-sharing plants shall have installed recording equipment capable of measuring and recording the BTU of the mixed gas. This may be accomplished by either measuring the specific gravity or the BTU content directly of the mixed gas. These records shall be made available upon request.

## Provenance

- Official: Yes
- Source: <https://publications.tnsosfiles.com/rules/1220/1220-04/1220-04-05.20180427.pdf>
- Source ID: `tn-sos-rules`
- SHA-256: `d3a5b9d2fd61bf5266691ac380a322767515117509e370eccc960ea76ee8fadd`
- Retrieved: 2026-08-20T08:55:29.804Z
- Exported: 2026-08-25T08:40:05.001Z
- Document slug: `tn-rules-1220-04-05-35`

### Source metadata

```json
{
  "jurisdiction": "US-TN",
  "chapter": "1220-04-05",
  "rule": "35",
  "pipelineScope": "tennessee-adjacent-gas-safety",
  "legalScope": "Bounded current Tennessee Chapter 1220-04-05 gas-safety corpus: definitions; engineering, plant, gas-quality, pressure, leak, odorization, welding, emergency and related safety requirements; and the complete dedicated pipeline enforcement and standards rules 1220-04-05-.47 and -.48. Customer billing, deposits, advertising, routine metering/accounting, and repealed or reserved entries are inventoried but excluded.",
  "applicabilityCaveat": "Applicability depends on Tennessee Public Utility Commission jurisdiction, gas-public-utility status, facility and activity, intrastate or interstate jurisdiction, federal preemption, exemptions or Commission orders, and the specific rule. Rules 1220-04-05-.47 and -.48 are the dedicated pipeline-safety rules; the other included rules are materially adjacent gas safety and plant-integrity requirements.",
  "rights": "The official Tennessee Secretary of State rules compilation is preserved with attribution and provenance. No general reuse license was identified for site presentation; state marks, linked material, and incorporated standards may carry separate rights. Confirm redistribution requirements beyond legal research.",
  "currentEffectiveOn": null,
  "sourceRevisionOn": "2018-04-27",
  "effectiveDateBasis": "Latest explicit effective date in the rule's official administrative history; the compilation-wide 2018 administrative revision is separately recorded.",
  "authorityHistory": "Authority: T.C.A. § 65-2-102. Administrative History: Original rule certified May 9, 1974. Administrative changes made to this chapter on April 27, 2018 pursuant to Public Chapter 94 of 2017; “Tennessee Regulatory Authority” references were changed to “Tennessee Public Utility Commission,” “Authority” references were changed to “Commission,” “Authority Director” references were changed to “Commissioner,” and “Chief” references were changed to “Director.”",
  "references": [
    {
      "citation": "T.C.A. § 65-2-102",
      "referenceType": "tennessee-code"
    }
  ],
  "publicationStatus": "Current official compilation published by the Tennessee Secretary of State, revised April 2018.",
  "region": "TN"
}
```