---
type: "Bill"
title: "Thermal Energy"
description: "The act authorizes the Colorado energy office to award grants for retrofitting existing buildings for installation of geothermal systems for heating and cooling under the single-structure geothermal grant that the office administers, and for generating geothermal energy through direct air capture technology under the geothermal electricity generation grant that the office administers."
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2023A"
identifier: "HB 23-1252"
citation: "Colorado HB 23-1252 (2023A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Cathy Kipp", "Chris Hansen", "Sheila Lieder", "Tony Exum"]
version_count: 9
action_count: 15
vote_count: 2
first_action: "2023-03-20T06:00:00+00:00"
last_action: "2023-05-11T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/97aaecb8-c17e-468e-a58f-5a546e2933ed"
source_url: "https://leg.colorado.gov/bills/hb23-1252"
source_hash: "f0c516c77d80b5a9fb500c54cb650f957a21674b2cd448d0abe0656c1793abb8"
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-co"]
---

# Colorado HB 23-1252 (2023A) — Thermal Energy

The act authorizes the Colorado energy office to award grants for retrofitting existing buildings for installation of geothermal systems for heating and cooling under the single-structure geothermal grant that the office administers, and for generating geothermal energy through direct air capture technology under the geothermal electricity generation grant that the office administers.

## Version chain

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

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_hb1252_s_app_001.pdf)
2. **Engrossed (04/19/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1252_eng.pdf)
3. **Final Act (05/10/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1252_enr.pdf)
4. **Introduced (03/20/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1252_01.pdf)
5. **PA1 (03/31/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1252_h_ene_01.pdf)
6. **Reengrossed (04/21/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1252_ren.pdf)
7. **Rerevised (05/03/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1252_rer.pdf)
8. **Revised (05/02/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1252_rev.pdf)
9. **Signed Act (05/11/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_1252_signed.pdf)

## Votes

- BILL — **24–11** (pass) · upper
- BILL — **52–10** (pass) · lower

## Sponsors

- Cathy Kipp — primary (person)
- Chris Hansen — primary (person)
- Sheila Lieder — primary (person)
- Tony Exum — primary (person)

## Timeline

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

- **2023-05-11T06:00:00+00:00** Governor Signed `executive-signature`
- **2023-05-11T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2023-05-10T06:00:00+00:00** Signed by the President of the Senate
- **2023-05-10T06:00:00+00:00** Signed by the Speaker of the House
- **2023-05-03T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2023-05-02T06:00:00+00:00** Senate Second Reading Special Order - Passed - No Amendments
- **2023-05-02T06:00:00+00:00** Senate Committee on Appropriations Refer Unamended to Senate Committee of the Whole `committee-passage, referral-committee`
- **2023-05-01T06:00:00+00:00** Senate Committee on Transportation & Energy Refer Unamended to Appropriations `referral-committee`
- **2023-04-24T06:00:00+00:00** Introduced In Senate - Assigned to Transportation & Energy `introduction`
- **2023-04-21T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2023-04-20T06:00:00+00:00** House Third Reading Laid Over Daily - No Amendments
- **2023-04-19T06:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Committee, Floor
- **2023-04-18T06:00:00+00:00** House Committee on Appropriations Refer Unamended to House Committee of the Whole `committee-passage, referral-committee`
- **2023-03-29T06:00:00+00:00** House Committee on Energy & Environment Refer Amended to Appropriations `referral-committee`
- **2023-03-20T06:00:00+00:00** Introduced In House - Assigned to Energy & Environment `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/97aaecb8-c17e-468e-a58f-5a546e2933ed`. Confidence: reported (aggregated from official Colorado legislature records).