---
type: "Bill"
title: "Energy: distributed energy generation: study."
description: "Energy: distributed energy generation: study."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20072008"
identifier: "AB 578"
citation: "California AB 578 (20072008)"
classification: ["bill"]
subjects: ["Energy: distributed energy generation: study."]
status: "enacted"
primary_sponsors: ["Blakeslee"]
version_count: 10
action_count: 28
vote_count: 8
first_action: "2007-02-21"
last_action: "2008-09-30"
source: "openstates"
source_identifier: "ocd-bill/5b708aaa-cd44-42ce-8393-db1278856c2f"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200720080AB578"
source_hash: "64906529bc8946a44f628c12605056b093e334b349e705284eb65944e49213d7"
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 578 (20072008) — Energy: distributed energy generation: study.

## Version chain

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

1. **02/21/07 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57899INT)
2. **04/09/07 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57898AMD)
3. **04/16/07 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57897AMD)
4. **06/01/07 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57896AMD)
5. **07/12/07 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57895AMD)
6. **07/14/08 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57894AMD)
7. **08/18/08 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57893AMD)
8. **09/30/08 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57891CHP)
9. **AB578** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200720080AB578)
10. **09/03/08 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200720080AB578&version=20070AB57892ENR)

## Votes

- Do pass as amended. — **pass** (pass) · upper
- AB 578 BLAKESLEE Assembly Third Reading — **pass** (pass) · lower
- Do pass as amended, and re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Be referred to Committee on Appropriations. — **pass** (pass) · lower
- AB 578 BLAKESLEE Concurrence in Senate Amendments — **pass** (pass) · lower
- Special Consent #38 AB578 Blakeslee By Kehoe — **pass** (pass) · upper
- Do pass as amended. — **pass** (pass) · lower
- Do pass as amended and be re-referred to the Committee on Rules. — **pass** (pass) · lower

## Sponsors

- Blakeslee — primary (person)
- Levine — author (person)

## Timeline

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

- **2007-02-21** Read first time. To print. `reading-1`
- **2007-02-22** From printer. May be heard in committee March 24.
- **2007-03-01** Referred to Standing Committee on Utilities and Commerce and Standing Committee on Natural Resources. `referral-committee`
- **2007-04-09** 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`
- **2007-04-09** Re-referred to Standing Committee on Utilities and Commerce. `referral-committee`
- **2007-04-12** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Rules (Ayes 11. Noes 0.) (April 9). `amendment-introduction, committee-passage, amendment-passage, referral-committee`
- **2007-04-16** Read second time and amended. `reading-1, reading-2, amendment-passage`
- **2007-04-17** Re-referred to Standing Committee on Rules. `referral-committee`
- **2007-04-19** From committee: Be re-referred to Standing Committee on Appropriations Re-referred. (Ayes 10. Noes 0.) (April 19). `committee-passage, referral-committee`
- **2007-04-25** 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 17. Noes 0.) (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`
- **2007-06-05** Read third time, passed, and to Senate. (Ayes 79. Noes 0. Page 1924.) `passage, reading-1, reading-3`
- **2007-06-06** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **2007-06-14** Referred to Standing Committee on Energy, Utilities and Communications. `referral-committee`
- **2007-07-11** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 8. Noes 0.) . `amendment-introduction, committee-passage, amendment-passage, referral-committee`
- **2007-07-12** Read second time, amended, and re-referred to Standing Committee on Appropriations. `reading-2, reading-1, amendment-passage, referral-committee`
- **2007-08-20** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2008-07-10** From committee: Amend, and do pass as amended. (Ayes 15. Noes 0.) . `amendment-introduction, committee-passage, amendment-passage`
- **2008-07-14** Read second time, amended, and to third reading. `reading-1, reading-2, amendment-passage`
- **2008-08-18** Read third time, amended. To second reading. `reading-1, reading-3, amendment-passage`
- **2008-08-19** Read second time. To third reading. `reading-1, reading-2`
- **2008-08-22** Read third time, passed, and to Assembly. (Ayes 37. Noes 0. Page 5329.) `passage, reading-1, reading-3`
- **2008-08-26** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 28 pursuant to Assembly Rule 77.
- **2008-08-28** Senate amendments concurred in. To enrollment. (Ayes 77. Noes 0. Page 6908.) `committee-passage-favorable, amendment-passage`
- **2008-09-18** Enrolled and to the Governor at 11 a.m.
- **2008-09-30** Approved by the Governor. `executive-signature`
- **2008-09-30** Chaptered by Secretary of State - Chapter 627, Statutes of 2008.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/5b708aaa-cd44-42ce-8393-db1278856c2f`. Confidence: reported (aggregated from official California legislature records).