---
type: "Bill"
title: "RELATING TO ELECTRIC VEHICLE BATTERIES."
description: "Establishes a working group within the Hawaii State Energy Office to examine how to maximize the recycling and reuse of electric vehicle batteries and recommend electric vehicle battery management practices. Requires a report to the Legislature. (CD1)"
jurisdiction: "us/states/hi"
legislature: "Hawaii Legislature"
session: "2025"
identifier: "HB 242"
citation: "Hawaii HB 242 (2025)"
classification: ["bill"]
subjects: ["Batteries", "Electric Vehicles", "HSEO", "Recycling", "Report", "Reuse", "Working Group"]
status: "enacted"
primary_sponsors: ["AMATO", "CHUN", "GRANDINETTI", "IWAMOTO", "KAHALOA", "KILA", "KITAGAWA", "LA CHICA", "LAMOSAO", "LOWEN", "MARTEN", "MATAYOSHI", "OLDS", "PERRUSO", "POEPOE", "QUINLAN", "SOUZA", "TAKENOUCHI", "TAM"]
version_count: 5
action_count: 47
vote_count: 9
first_action: "2025-01-16"
last_action: "2025-06-25"
source: "openstates"
source_identifier: "ocd-bill/ec53653f-0adb-45df-bbc5-628666f4923a"
source_url: "https://capitol.hawaii.gov/session/archives/measure_indiv_Archives.aspx?billtype=HB&billnumber=242&year=2025"
source_hash: "ef7bd35fc1155f31c51da4ad6fdcbeba2e492ca5044f06b1611f6d9e8c9e2d45"
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-hi"]
---

# Hawaii HB 242 (2025) — RELATING TO ELECTRIC VEHICLE BATTERIES.

Establishes a working group within the Hawaii State Energy Office to examine how to maximize the recycling and reuse of electric vehicle batteries and recommend electric vehicle battery management practices. Requires a report to the Legislature. (CD1)

## Version chain

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

1. **HB242** (committee substitute) — [source](https://data.capitol.hawaii.gov/sessions/session2025/bills/HB242_.HTM)
2. **HB242_CD1** (committee substitute) — [source](https://data.capitol.hawaii.gov/sessions/session2025/bills/HB242_CD1_.HTM)
3. **HB242_HD1** (committee substitute) — [source](https://data.capitol.hawaii.gov/sessions/session2025/bills/HB242_HD1_.HTM)
4. **HB242_SD1** (committee substitute) — [source](https://data.capitol.hawaii.gov/sessions/session2025/bills/HB242_SD1_.HTM)
5. **HB242_SD2** (committee substitute) — [source](https://data.capitol.hawaii.gov/sessions/session2025/bills/HB242_SD2_.HTM)

## Votes

- Report Adopted; Passed Third Reading, as amended (SD 2). — **23–2** (pass) · upper
- The committee on FIN recommend that the measure be PASSED, UNAMENDED. — **14–0** (pass) · lower
- The committee(s) on AEN recommend(s) that the measure be PASSED, WITH AMENDMENTS. — **3–1** (pass) · upper
- The committee(s) on WAM recommend(s) that the measure be PASSED, WITH AMENDMENTS. — **13–0** (pass) · upper
- The committee(s) on EIG recommend(s) that the measure be PASSED, WITH AMENDMENTS. — **3–0** (pass) · upper
- Passed Final Reading, as amended (CD 1). — **24–1** (pass) · upper
- The Conference committee recommends that the measure be PASSED, WITH AMENDMENTS. — **3–0** (pass) · upper
- The Conference Committee recommends that the measure be Passed, with Amendments. — **4–0** (pass) · lower
- The committee on EEP recommend that the measure be PASSED, WITH AMENDMENTS. — **5–0** (pass) · lower

## Sponsors

- AMATO — primary (person)
- CHUN — primary (person)
- GRANDINETTI — primary (person)
- IWAMOTO — primary (person)
- KAHALOA — primary (person)
- KILA — primary (person)
- KITAGAWA — primary (person)
- LA CHICA — primary (person)
- LAMOSAO — primary (person)
- LOWEN — primary (person)
- MARTEN — primary (person)
- MATAYOSHI — primary (person)
- OLDS — primary (person)
- PERRUSO — primary (person)
- POEPOE — primary (person)
- QUINLAN — primary (person)
- SOUZA — primary (person)
- TAKENOUCHI — primary (person)
- TAM — primary (person)

## Timeline

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

- **2025-06-25** Act 209, on 06/25/2025 (Gov. Msg. No. 1311). `became-law`
- **2025-06-25** Act 209, 06/25/2025 (Gov. Msg. No. 1311). `became-law`
- **2025-05-01** Transmitted to Governor.
- **2025-05-02** Received notice of passage on Final Reading in House (Hse. Com. No. 821). `receipt`
- **2025-05-01** Received notice of Final Reading (Sen. Com. No. 888). `receipt`
- **2025-04-30** Passed Final Reading as amended in CD 1 with none voting aye with reservations; Representative(s) Garcia voting no (1) and Representative(s) Cochran excused (1). `passage`
- **2025-04-30** Passed Final Reading, as amended (CD 1). Ayes, 24; Aye(s) with reservations: none. Noes, 1 (Senator(s) Awa). Excused, 0 (none). `passage`
- **2025-04-25** 48 Hrs. Notice (as amended CD 1) 04-30-25
- **2025-04-25** Reported from Conference Committee as amended CD 1 (Conf. Com. Rep. No. 223).
- **2025-04-25** Forty-eight (48) hours notice Wednesday, 04-30-25.
- **2025-04-25** Reported from Conference Committee (Conf Com. Rep. No. 223) as amended in (CD 1).
- **2025-04-25** The Conference committee recommends that the measure be PASSED, WITH AMENDMENTS. The votes of the Senate Conference Managers were as follows: 3 Aye(s): Senator(s) Wakai, Lee, C., Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 1 Excused: Senator(s) Gabbard. `committee-passage-favorable`
- **2025-04-25** The Conference Committee recommends that the measure be Passed, with Amendments. The votes were as follows: 4 Ayes: Representative(s) Perruso, Takenouchi, Marten, Alcos; Ayes with reservations: none; 0 Noes: none; and 0 Excused: none.
- **2025-04-25** Received notice of change in conferees (Hse. Com. No. 816). `receipt`
- **2025-04-25** House Conferees Changed: Representative Lowen discharged as Co-Chair. Representative Perruso discharged as Member; Added as Co-Chair.
- **2025-04-24** Bill scheduled for Conference Committee Meeting on Friday, 04-25-25 4:15PM in conference room 325.
- **2025-04-24** Received notice of Senate conferees (Sen. Com. No. 875). `receipt`
- **2025-04-24** Senate Conferees Appointed: Wakai Chair; Gabbard, Lee, C. Co-Chairs; Fevella.
- **2025-04-21** Received notice of appointment of House conferees (Hse. Com. No. 755). `receipt`
- **2025-04-17** House Conferees Appointed: Lowen, Takenouchi Co-Chairs; Marten, Perruso, Alcos.
- **2025-04-11** Received notice of disagreement (Hse. Com. No. 704). `receipt`
- **2025-04-10** House disagrees with Senate amendment (s). `amendment-failure`
- **2025-04-08** Returned from Senate (Sen. Com. No. 607) in amended form (SD 2).
- **2025-04-08** Report Adopted; Passed Third Reading, as amended (SD 2). Ayes, 23; Aye(s) with reservations: Senator(s) DeCoite. Noes, 2 (Senator(s) Awa, DeCorte). Excused, 0 (none). Transmitted to House. `passage`
- **2025-04-04** 48 Hrs. Notice 04-08-25.
- **2025-04-04** Reported from WAM (Stand. Com. Rep. No. 1808) with recommendation of passage on Third Reading, as amended (SD 2).
- **2025-04-02** The committee(s) on WAM recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in WAM were as follows: 13 Aye(s): Senator(s) Dela Cruz, Moriwaki, Aquino, DeCoite, Elefante, Hashimoto, Inouye, Kanuha, Kidani, Kim, Lee, C., Wakai, Fevella; Aye(s) with reservations: none ; 0 No(es): none; and 0 Excused: none. `committee-passage-favorable`
- **2025-03-27** The committee(s) on WAM will hold a public decision making on 04-02-25 10:01AM; Conference Room 211 & Videoconference.
- **2025-03-18** Report adopted; Passed Second Reading, as amended (SD 1) and referred to WAM. `reading-2, referral-committee`
- **2025-03-18** Reported from EIG/AEN (Stand. Com. Rep. No. 1118) with recommendation of passage on Second Reading, as amended (SD 1) and referral to WAM.
- **2025-03-11** The committee(s) on AEN recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in AEN were as follows: 3 Aye(s): Senator(s) Gabbard, Richards, Rhoads; Aye(s) with reservations: none ; 1 No(es): Senator(s) Awa; and 1 Excused: Senator(s) DeCoite. `committee-passage-favorable`
- **2025-03-11** The committee(s) on EIG recommend(s) that the measure be PASSED, WITH AMENDMENTS. The votes in EIG were as follows: 3 Aye(s): Senator(s) Wakai, Chang, Richards; Aye(s) with reservations: none ; 0 No(es): none; and 2 Excused: Senator(s) DeCoite, Fevella. `committee-passage-favorable`
- **2025-03-07** The committee(s) on EIG/AEN has scheduled a public hearing on 03-11-25 3:00PM; Conference Room 016 & Videoconference.
- **2025-03-04** Referred to EIG/AEN, WAM. `referral-committee`
- **2025-02-28** Passed First Reading. `reading-1`
- **2025-02-28** Received from House (Hse. Com. No. 11). `introduction, receipt`
- **2025-02-27** Passed Third Reading with none voting aye with reservations; Representative(s) Garcia voting no (1) and Representative(s) Cochran, Pierick, Templo, Ward excused (4). Transmitted to Senate. `passage`
- **2025-02-27** Reported from FIN (Stand. Com. Rep. No. 879), recommending passage on Third Reading.
- **2025-02-20** The committee on FIN recommend that the measure be PASSED, UNAMENDED. The votes were as follows: 14 Ayes: Representative(s) Yamashita, Takenouchi, Grandinetti, Holt, Hussey, Keohokapu-Lee Loy, Kitagawa, Kusch, Lamosao, Lee, M., Miyake, Morikawa, Templo, Reyes Oda; Ayes with reservations: none; Noes: none; and 2 Excused: Representative(s) Alcos, Ward. `committee-passage-favorable`
- **2025-02-18** Bill scheduled to be heard by FIN on Thursday, 02-20-25 12:00PM in House conference room 308 VIA VIDEOCONFERENCE.
- **2025-02-12** Passed Second Reading as amended in HD 1 and referred to the committee(s) on FIN with none voting aye with reservations; Representative(s) Garcia voting no (1) and Representative(s) Cochran, Sayama, Ward excused (3). `reading-2, referral-committee`
- **2025-02-12** Reported from EEP (Stand. Com. Rep. No. 502) as amended in HD 1, recommending passage on Second Reading and referral to FIN.
- **2025-02-06** The committee on EEP recommend that the measure be PASSED, WITH AMENDMENTS. The votes were as follows: 5 Ayes: Representative(s) Lowen, Perruso, Kahaloa, Kusch, Quinlan; Ayes with reservations: none; Noes: none; and 1 Excused: Representative(s) Ward. `committee-passage-favorable`
- **2025-01-29** Bill scheduled to be heard by EEP on Thursday, 02-06-25 9:00AM in House conference room 325 VIA VIDEOCONFERENCE.
- **2025-01-21** Referred to EEP, FIN, referral sheet 1 `referral-committee`
- **2025-01-17** Introduced and Pass First Reading. `introduction, reading-1`
- **2025-01-16** Pending introduction.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/ec53653f-0adb-45df-bbc5-628666f4923a`. Confidence: reported (aggregated from official Hawaii legislature records).