---
type: "Bill"
title: "A bill for an act prohibiting counties and cities from regulating the sale of natural gas and propane. (Formerly HSB 166.) Effective date: 07/01/2021."
description: "A bill for an act prohibiting counties and cities from regulating the sale of natural gas and propane. (Formerly HSB 166.) Effective date: 07/01/2021."
jurisdiction: "us/states/ia"
legislature: "Iowa General Assembly"
session: "2021-2022"
identifier: "HF 555"
citation: "Iowa HF 555 (2021-2022)"
classification: ["bill"]
subjects: ["city government", "county government", "energy use", "natural gas", "propane", "sales"]
status: "enacted"
primary_sponsors: []
version_count: 10
action_count: 20
vote_count: 3
first_action: "2021-02-16"
last_action: "2021-04-12"
source: "openstates"
source_identifier: "ocd-bill/3f5c05be-1c40-498c-9c3a-a674f06f9210"
source_url: "https://www.legis.iowa.gov/legislation/billTracking/billHistory?billName=HF 555&ga=89"
source_hash: "5d54b2920ee7341d1905f2d68a30a3089e6bcb714732a6548758457dca2dea83"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ia"]
---

# Iowa HF 555 (2021-2022) — A bill for an act prohibiting counties and cities from regulating the sale of natural gas and propane. (Formerly HSB 166.) Effective date: 07/01/2021.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Introduced** (filed) — [source](https://www.legis.iowa.gov/docs/publications/LGI/89/attachments/HF555.html)
2. **Amendment H-1181** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/H1181.pdf)
3. **Amendment H-1186** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/H1186.pdf)
4. **Amendment H-1187** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/H1187.pdf)
5. **Amendment H-1203** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/H1203.pdf)
6. **Amendment S-3104** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/AMDI/89/S3104.pdf)
7. **Reprinted** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGR/89/attachments/HF555.html)
8. **Reprinted Marked Up** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGRM/89/attachments/HF555.html)
9. **Signed Enrolled Bill (PDF)** (committee substitute) — [source](https://www.legis.iowa.gov/docs/publications/LGE/89/Attachments/HF555_GovLetter.pdf)
10. **Enrolled** (enrolled) — [source](https://www.legis.iowa.gov/docs/publications/LGE/89/attachments/HF555.html)

## Votes

- Shall the bill pass? — **57–36** (pass) · lower
- Shall the bill pass? — **29–16** (pass) · upper
- Shall amendment S-3104 be adopted? — **18–27** (fail) · upper

## Timeline

The legislative action history — every referral, reading, and vote.

- **2021-02-16** Introduced, placed on calendar. `introduction`
- **2021-03-11** Amendment H-1181 filed. `amendment-introduction`
- **2021-03-12** Amendments H-1186 and H-1187 filed.
- **2021-03-15** Amendment H-1203 to amendment H-1181 filed, lost.
- **2021-03-15** Amendment H-1181 adopted. `amendment-passage`
- **2021-03-15** Amendment H-1186 lost.
- **2021-03-15** Amendment H-1187 lost.
- **2021-03-15** Passed House, yeas 57, nays 36. `passage`
- **2021-03-16** Explanation of vote.
- **2021-03-17** Explanation of vote.
- **2021-03-15** Immediate message.
- **2021-03-16** Message from House.
- **2021-03-16** Read first time, attached to similar SF 455. `reading-1`
- **2021-03-29** Substituted for SF 455.
- **2021-03-29** Amendment S-3104 filed, lost. `amendment-introduction`
- **2021-03-29** Passed Senate, yeas 29, nays 16. `passage`
- **2021-03-29** Immediate message.
- **2021-03-30** Message from Senate.
- **2021-04-12** Reported correctly enrolled, signed by Speaker and President, and sent to Governor.
- **2021-04-12** Signed by Governor. `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/3f5c05be-1c40-498c-9c3a-a674f06f9210`. Confidence: reported (aggregated from official Iowa legislature records).