---
type: "Bill"
title: "Solar energy: Solar Water Heating and Efficiency Act of 2007."
description: "Solar energy: Solar Water Heating and Efficiency Act of 2007."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20072008"
identifier: "AB 1470"
citation: "California AB 1470 (20072008)"
classification: ["bill"]
subjects: ["Solar energy: Solar Water Heating and Efficiency Act of 2007."]
status: "enacted"
primary_sponsors: ["Huffman"]
version_count: 11
action_count: 33
vote_count: 10
first_action: "2007-02-23"
last_action: "2007-10-12"
source: "openstates"
source_identifier: "ocd-bill/7fa1e16c-7486-499b-a7de-aade5c82198a"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200720080AB1470"
source_hash: "7ca47821fe9a6fef2a62d2dfc2edf97a27868437e75a8de3ddf3a337e05b6794"
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-ca"]
---

# California AB 1470 (20072008) — Solar energy: Solar Water Heating and Efficiency Act of 2007.

## Version chain

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

1. **02/23/07 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147099INT)
2. **04/12/07 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147098AMD)
3. **05/02/07 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147097AMD)
4. **06/01/07 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147096AMD)
5. **06/26/07 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147095AMD)
6. **07/10/07 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147094AMD)
7. **08/31/07 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147093AMD)
8. **09/05/07 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147092AMD)
9. **10/12/07 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147090CHP)
10. **AB1470** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200720080AB1470)
11. **09/26/07 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB1470&version=20070AB147091ENR)

## Votes

- Do pass as amended. — **pass** (pass) · upper
- AB 1470 HUFFMAN Assembly Third Reading — **pass** (pass) · lower
- AB 1470 HUFFMAN Concurrence in Senate Amendments — **pass** (pass) · lower
- Placed on Appropriations Suspense file. — **pass** (pass) · upper
- Do pass as amended, and re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Do pass as amended and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower
- Assembly 3rd Reading AB1470 Huffman By Simitian — **pass** (pass) · upper
- AB 1470 HUFFMAN Assembly Third Reading Amend By TRAN Set #1 Motion to Lay on the Table — **pass** (pass) · lower
- Do pass as amended. — **pass** (pass) · lower
- Do pass and be re-referred to the Committee on Natural Resources. — **pass** (pass) · lower

## Sponsors

- Huffman — primary (person)
- Beall — coauthor (person)
- Carter — coauthor (person)
- Corbett — coauthor (person)
- DeSaulnier — coauthor (person)
- Florez — coauthor (person)
- Krekorian — coauthor (person)
- Kuehl — coauthor (person)
- Laird — coauthor (person)
- Leno — principal coauthor (person)
- Romero — coauthor (person)
- Saldana — coauthor (person)
- Scott — coauthor (person)
- Wiggins — coauthor (person)
- Wolk — coauthor (person)

## Timeline

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

- **2007-02-23** Introduced. To print. `introduction`
- **2007-02-25** From printer. May be heard in committee March 27.
- **2007-02-26** Read first time. `reading-1`
- **2007-03-29** Referred to Standing Committee on Utilities and Commerce and Standing Committee on Natural Resources. `referral-committee`
- **2007-04-12** Joint Rule 62(a), file notice waived. (Page 940.)
- **2007-04-12** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Utilities and Commerce Read second time and amended. `reading-1, reading-2, amendment-passage, amendment-introduction, referral-committee`
- **2007-04-16** Re-referred to Standing Committee on Utilities and Commerce. `referral-committee`
- **2007-04-17** From committee: Do pass, and re-refer to Standing Committee on Natural Resources Re-referred. (Ayes 7. Noes 4.) (April 16). `committee-passage, committee-passage-favorable, referral-committee`
- **2007-05-01** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 6. Noes 3.) (April 23). `amendment-introduction, committee-passage, amendment-passage, referral-committee`
- **2007-05-02** Read second time and amended. `reading-1, reading-2, amendment-passage`
- **2007-05-03** Re-referred to Standing Committee on Appropriations. `referral-committee`
- **2007-05-16** In committee: Set, first hearing. Referred to Standing Committee on Appropriations suspense file. `referral-committee`
- **2007-06-01** From committee: Amend, and do pass as amended. (Ayes 12. Noes 5.) (May 31). Read second time and amended. Ordered returned to second reading. `reading-1, reading-2, amendment-introduction, committee-passage, amendment-passage`
- **2007-06-04** Read second time. To third reading. `reading-1, reading-2`
- **2007-06-06** Read third time, passed, and to Senate. (Ayes 44. Noes 34. Page 2015.) `passage, reading-1, reading-3`
- **2007-06-07** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **2007-06-21** Referred to Standing Committee on Energy, Utilities and Communications. `referral-committee`
- **2007-06-26** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Standing Committee on Energy, Utilities and Communications. `reading-1, reading-2, amendment-introduction, referral-committee, amendment-passage`
- **2007-07-09** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 6. Noes 2.) . `amendment-introduction, committee-passage, amendment-passage, referral-committee`
- **2007-07-10** Read second time, amended, and re-referred to Standing Committee on Appropriations. `reading-2, reading-1, amendment-passage, referral-committee`
- **2007-07-23** In committee: Hearing postponed by committee.
- **2007-08-20** In committee: Placed on Appropriations suspense file.
- **2007-08-31** From committee: Amend, and do pass as amended. (Ayes 9. Noes 6.) . `amendment-introduction, committee-passage, amendment-passage`
- **2007-08-31** Read second time, amended, and to third reading. `reading-1, reading-2, amendment-passage`
- **2007-09-05** Read third time, amended. To second reading. `reading-1, reading-3, amendment-passage`
- **2007-09-06** Read second time. To third reading. `reading-1, reading-2`
- **2007-09-10** Read third time, passed, and to Assembly. (Ayes 24. Noes 16. Page 2529.) `passage, reading-1, reading-3`
- **2007-09-11** In Assembly. Concurrence in Senate amendments pending.
- **2007-09-12** Senate amendments concurred in. To enrollment. (Ayes 45. Noes 32. Page 3383.) `committee-passage-favorable, amendment-passage`
- **2007-09-26** (Corrected September 25.)
- **2007-10-01** Enrolled and to the Governor at 3:45 p.m.
- **2007-10-12** Approved by the Governor. `executive-signature`
- **2007-10-12** Chaptered by Secretary of State - Chapter 536, Statutes of 2007.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/7fa1e16c-7486-499b-a7de-aade5c82198a`. Confidence: reported (aggregated from official California legislature records).