Assertion Supported AI assessment confidence: 95% certainty 3/5 debate potential 1/5

Del Chiaro: California solar battery attachment rate was 12% last year

Bernadette Del Chiaro · Can California pull off its clean energy ambitions? · Oct 6, 2023 · at 22:52

Bernadette Del Chiaro highlights the low proportion of residential solar installations that included paired battery storage prior to policy changes.

0:00 / 0:07exact quote · 7.8s

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“Battery attachment rate last year was maybe 12%, so 12% of consumers going solar added a battery.”

quote is from the automated transcript, cleaned for reading: filler sounds and stutters are removed, nothing is rephrased. names can be misheard (the analysis reads context, assessments check outside sources). how →

The claim, plainly

Approximately 12% of California consumers installing rooftop solar systems added battery storage in 2022.

a quote alone can be ambiguous, so this restates it with the references and context of the conversation around it resolved. AI-written; the tape below the player is the source.

Assessment

On October 6, 2023, then-Executive Director of the California Solar & Storage Association (CALSSA) Bernadette Del Chiaro stated that California's residential battery attachment rate in 2022 was 'maybe 12%'. Official interconnection data and analysis confirm this approximation. The Lawrence Berkeley National Laboratory (LBNL) Tracking the Sun 2023 and 2024 editions recorded California's residential solar-plus-storage attachment rate for calendar year 2022 at 11% under legacy NEM 2.0 rules. Furthermore, California Energy Commission (CEC) quarterly interconnection data for PG&E and SCE territories showed 2022 attachment shares ranging between 10% and 13%, and Wood Mackenzie market analytics placed 2022 monthly attachment rates at approximately 10% to 11%. Del Chiaro's estimate accurately reflected official state interconnection data.

LBNL Tracking the Sun (2023 & 2024 editions) reported California's residential solar-plus-storage attachment rate was 11% in calendar year 2022.
California Energy Commission (CEC) BTM Distributed Generation data showed quarterly residential attachment rates across major IOUs between 10% and 13% in 2022.
Wood Mackenzie market analytics confirmed 2022 California residential battery attachment averaged roughly 10% to 11% prior to the NEM 3.0 transition.

Checked against

[1] lbl.gov [2] lbl.gov [3] lbl.gov [4] sepapower.org [5] woodmac.com [6] pv-magazine.com [7] energy-storage.news [8] canarymedia.com

"Bernadette Del Chiaro" "12%" "2022" "storage" "Tracking the Sun" "2022" "California" "attachment" residential California residential solar storage attachment rate 2022 DGStats site:emp.lbl.gov "Tracking the Sun" "attachment" "2022" "residential" "attachment rate" "2022" "California" LBNL "attachment rate" "11%" OR "12%" OR "13%" "2022" California solar residential "DGStats" "paired" "storage" "2022" "attachment" solar California rooftop solar battery storage attachment rate 2022

assessed as of 2026-09-02

This assessment is an AI reading of a public statement, made against the cited references with the confidence shown. It can be wrong. The quote, the tape and the references are all on this page; if something is off, use report an error below. full disclaimer →

Mentioned

Battery attachment rate California

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