---
type: "Bill"
title: "Revenue and taxation; tax credits for electricity generated by zero-emission facilities; imposing cap on tax credits; authorizing carryover of unused credits; requiring report from Tax Commission and Secretary of Energy and Environment. Effective date."
description: "Revenue and taxation; tax credits for electricity generated by zero-emission facilities; imposing cap on tax credits; authorizing carryover of unused credits; requiring report from Tax Commission and Secretary of Energy and Environment. Effective date."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2017-2018"
identifier: "SB 893"
citation: "Oklahoma SB 893 (2017-2018)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Quinn", "Sears"]
version_count: 8
action_count: 35
vote_count: 3
first_action: "2018-02-05"
last_action: "2018-05-08"
source: "openstates"
source_identifier: "ocd-bill/2740ba46-5b70-4a85-a89f-c853f92995bc"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=SB893&session=1800"
source_hash: "efeddaf0814091ff61a2670d37afe7509c14255b7bcfd0f21c99a5e0243f574b"
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-ok"]
---

# Oklahoma SB 893 (2017-2018) — Revenue and taxation; tax credits for electricity generated by zero-emission facilities; imposing cap on tax credits; authorizing carryover of unused credits; requiring report from Tax Commission and Secretary of Energy and Environment. Effective date.

## Version chain

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

1. **Introduced** (filed) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 INT/SB/SB893 INT.PDF)
2. **Amended And Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 AMENDMENTS/Amendment & Engr/SB893 HASB & ENGR.PDF)
3. **Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 ENGR/SB/SB893 ENGR.PDF)
4. **Enrolled (final version)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 ENR/SB/SB893 ENR.PDF)
5. **Floor (House)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 FLR/HFLR/SB893 HFLR.PDF)
6. **Floor (Senate)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 FLR/SFLR/SB893 SFLR.PDF)
7. **House Committee Substitute for Senate Bill** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 COMMITTEE SUBS/HCSS/SB893 HCS.PDF)
8. **Senate Committee Substitute** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 COMMITTEE SUBS/SCS/SB893 CS.PDF)

## Votes

- THIRD READING — **33–11** (pass) · upper
- FOURTH READING — **31–8** (pass) · upper
- THIRD READING — **66–26** (pass) · lower

## Sponsors

- Quinn — primary (person)
- Sears — primary (person)

## Timeline

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

- **2018-02-05** First Reading `introduction, reading-1`
- **2018-02-05** Authored by Senator Quinn
- **2018-02-06** Second Reading referred to Appropriations `reading-2, referral-committee`
- **2018-02-06** Referred to Appr/Sub-Finance `referral-committee`
- **2018-02-13** Coauthored by Senator Bergstrom
- **2018-02-14** Recommendation to the full committee; Do Pass as amended Appr/Sub-Finance sub-committee `committee-passage`
- **2018-02-14** Reported Do Pass, amended by committee substitute Appropriations committee; CR filed `committee-passage`
- **2018-02-14** Title stricken
- **2018-02-14** Emergency clause stricken
- **2018-03-06** Coauthored by Representative Thomsen (principal House author)
- **2018-03-12** Remove as coauthor Senator Bergstrom
- **2018-03-14** General Order, Amended by Floor Substitute
- **2018-03-14** Measure passed: Ayes: 33 Nays: 11 `passage`
- **2018-03-14** Referred for engrossment
- **2018-03-15** Engrossed to House `passage`
- **2018-03-15** First Reading `introduction, reading-1`
- **2018-03-21** Second Reading referred to Appropriations and Budget `reading-2, referral-committee`
- **2018-03-21** Referred to Appropriations and Budget Finance Subcommittee `referral-committee`
- **2018-04-05** Withdrawn from Appropriations and Budget Finance Subcommittee
- **2018-04-10** CR; Do Pass, amended by committee substitute Appropriations and Budget Committee `committee-passage`
- **2018-04-10** Remove Representative Thomsen as principal House author and substitute with Representative Sears
- **2018-04-10** Title restored
- **2018-04-25** General Order
- **2018-04-25** Coauthored by Representative(s) Bennett (John)
- **2018-04-25** Third Reading, Measure passed: Ayes: 66 Nays: 26 `reading-3, passage`
- **2018-04-25** Referred for engrossment
- **2018-04-26** Engrossed, signed, to Senate `passage`
- **2018-04-26** HAs read
- **2018-05-02** HAs adopted
- **2018-05-02** Measure passed: Ayes: 31 Nays: 8 `passage`
- **2018-05-02** Referred for enrollment
- **2018-05-02** Enrolled, to House
- **2018-05-02** Signed, returned to Senate
- **2018-05-02** Sent to Governor `executive-receipt`
- **2018-05-08** Approved by Governor 05/08/2018 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/2740ba46-5b70-4a85-a89f-c853f92995bc`. Confidence: reported (aggregated from official Oklahoma legislature records).