---
type: "Bill"
title: "AN ACT CONCERNING ENERGY STORAGE."
description: "AN ACT CONCERNING ENERGY STORAGE."
jurisdiction: "us/states/ct"
legislature: "Connecticut General Assembly"
session: "2021"
identifier: "SB 952"
citation: "Connecticut SB 952 (2021)"
classification: ["bill"]
subjects: ["Electric distribution companies", "Electric storage batteries", "Energy and Environmental Protection", "Department of", "Municipal utilities", "Public Utilities Regulatory Authority", "Renewable energy sources", "Reports", "State procurement"]
status: "enacted"
primary_sponsors: ["Gucker, Kenneth M", "Haskell, Will", "Michel, David", "Simms, Travis"]
version_count: 4
action_count: 21
vote_count: 0
first_action: "2021-02-25"
last_action: "2021-06-16"
source: "openstates"
source_identifier: "ocd-bill/d8d83796-b0c4-469b-b132-f6aeda055725"
source_url: "ftp://ftp.cga.ct.gov/pub/data/bill_info.csv"
source_hash: "e61153f86dd15dba689766463711ee2e30fab58a547823a8f7af5087066f47a3"
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-ct"]
---

# Connecticut SB 952 (2021) — AN ACT CONCERNING ENERGY STORAGE.

## Version chain

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

1. **ET Joint Favorable Substitute** (committee substitute) — [source](https://www.cga.ct.gov/2021/TOB/S/PDF/2021SB-00952-R01-SB.PDF)
2. **File No. 291** (committee substitute) — [source](https://www.cga.ct.gov/2021/FC/PDF/2021SB-00952-R000291-FC.PDF)
3. **Public Act No. 21-53** (committee substitute) — [source](https://www.cga.ct.gov/2021/ACT/PA/PDF/2021PA-00053-R00SB-00952-PA.PDF)
4. **Raised Bill** (committee substitute) — [source](https://www.cga.ct.gov/2021/TOB/S/PDF/2021SB-00952-R00-SB.PDF)

## Sponsors

- Gucker, Kenneth M — primary (person)
- Haskell, Will — primary (person)
- Michel, David — primary (person)
- Simms, Travis — primary (person)

## Timeline

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

- **2021-02-25** REF. TO JOINT COMM. ON Energy and Technology `referral-committee`
- **2021-02-26** PUBLIC HEARING 0304
- **2021-03-18** Joint Favorable Substitute `committee-passage-favorable`
- **2021-03-19** FILED WITH LCO
- **2021-03-29** REFERRED TO Office of Legislative Research AND Office of Fiscal Analysis 04/06/21
- **2021-04-06** RPTD. OUT OF LCO
- **2021-04-06** FAV. RPT., TAB. FOR CAL., SEN.
- **2021-04-06** SENATE CALENDAR NUMBER 182
- **2021-04-06** FILE NO. 291
- **2021-05-20** SEN. ADOPTED SEN. AMEND. SCH. A
- **2021-05-20** SEN. PASSED, SEN. AMEND. SCH. A `passage`
- **2021-05-20** ON CONSENT CALENDAR
- **2021-05-21** FAV. RPT., TABLED FOR HOUSE CALENDAR
- **2021-05-21** HOUSE CALENDAR NUMBER 534
- **2021-06-03** HOUSE ADOPTED SEN. AMEND. SCH. A
- **2021-06-03** HOUSE PASSED, SEN. AMEND. SCH. A `passage`
- **2021-06-03** IN CONCURRENCE
- **2021-06-09** PUBLIC ACT 21-53
- **2021-06-10** TRANSMITTED TO SECRETARY OF THE STATE
- **2021-06-10** TRANSMITTED BY SECRETARY OF THE STATE TO GOVERNOR
- **2021-06-16** SIGNED BY GOVERNOR `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/d8d83796-b0c4-469b-b132-f6aeda055725`. Confidence: reported (aggregated from official Connecticut legislature records).