---
type: "Bill"
title: "requiring the department of energy to initiate a microgrid study."
description: "requiring the department of energy to initiate a microgrid study."
jurisdiction: "us/states/nh"
legislature: "New Hampshire General Court"
session: "2024"
identifier: "HB 558"
citation: "New Hampshire HB 558 (2024)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Keith Michael Ammon"]
version_count: 1
action_count: 19
vote_count: 0
first_action: "2023-01-11"
last_action: "2024-05-14"
source: "openstates"
source_identifier: "ocd-bill/2183b0f8-f5bf-4483-9e60-21b1406892e4"
source_url: "https://www.gencourt.state.nh.us/bill_status/legacy/bs2016/bill_status.aspx?lsr=0207&sy=2024&sortoption=&txtsessionyear=2024"
source_hash: "c140fbe26ea687e01e7b6d3b1c48b9881099263b4fa12b60fdb61cd92eb0b4c3"
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-nh"]
---

# New Hampshire HB 558 (2024) — requiring the department of energy to initiate a microgrid study.

## Version chain

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

1. **Amendment #2023-2321h** (committee substitute) — [source](https://www.gencourt.state.nh.us/bill_status/legacy/bs2016/billText.aspx?sy=2024&id=2023-2321h&txtFormat=amend)

## Sponsors

- Keith Michael Ammon — primary (person)
- Aidan Ankarberg — cosponsor (person)
- David H. Watters — cosponsor (person)
- Douglas W. Thomas — cosponsor (person)
- Jess Edwards — cosponsor (person)
- John M. Potucek — cosponsor (person)

## Timeline

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

- **2023-01-11** Introduced (in recess of) 01/05/2023 and referred to Science, Technology and Energy HJ 3 P. 20 `introduction, referral-committee`
- **2023-02-01** Public Hearing: 02/07/2023 10:00 am LOB 302-304
- **2023-02-08** Public Hearing: 02/13/2023 09:00 am LOB 304
- **2023-02-16** Executive Session: 02/21/2023 09:30 am LOB 302-304
- **2023-02-21** Retained in Committee
- **2023-09-05** Full Committee Work Session: 09/26/2023 01:00 pm LOB 302-304 HC 36
- **2023-09-27** ==CANCELLED== Subcommittee Work Session: 10/23/2023 10:00 am LOB 302-304 HC 39
- **2023-09-28** Subcommittee Work Session: 10/16/2023 01:00 pm LOB 302-304 HC 39
- **2023-10-25** Executive Session: 11/06/2023 10:00 am LOB 302-304 HC 43
- **2023-11-14** Committee Report: Ought to Pass with Amendment # 2023-2321h (NT) 11/06/2023 (Vote 20-0; CC) HC 49 P. 20 `committee-passage-favorable`
- **2024-01-03** Amendment # 2023-2321h: AA VV 01/03/2024 HJ 1 P. 66
- **2024-01-03** Ought to Pass with Amendment 2023-2321h: MA VV 01/03/2024 HJ 1 P. 66 `committee-passage-favorable, passage`
- **2024-02-22** Introduced 02/21/2024 and Referred to Energy and Natural Resources; SJ 6 `introduction, referral-committee`
- **2024-04-03** Hearing: 04/09/2024, Room 103, SH, 09:00 am; SC 14
- **2024-04-09** Committee Report: Ought to Pass, 04/18/2024, Vote 3-0; SC 15 `committee-passage-favorable`
- **2024-04-18** Ought to Pass: MA, VV; OT3rdg; 04/18/2024; SJ 10 `committee-passage-favorable, passage`
- **2024-05-02** Enrolled Adopted, VV, (In recess 05/02/2024); SJ 12 `enrolled`
- **2024-05-02** Enrolled 05/02/2024 adopted HJ 12 P. 44
- **2024-05-14** Signed by Governor Sununu 05/14/2024; Chapter 10; eff. 07/13/2024 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/2183b0f8-f5bf-4483-9e60-21b1406892e4`. Confidence: reported (aggregated from official New Hampshire legislature records).