ConnecticutSales Tax Incentive
Sales and Use Tax Exemption for Solar and Geothermal Systems
You get100% exemption
View on DSIRE
Quick facts
- Incentive type
- Sales Tax Incentive
- Amount
- 100% exemption
- Administrator
- Connecticut Department of Revenue Services
- Applies to
- State
Dates
- Start date
- 2007-07-01
- Source last updated
- September 26, 2025
About this incentive
Connecticut enacted legislation in June 2007 (H.B. 7432) that established a sales and use tax exemption for solar energy equipment and geothermal resource systems. H.B. 7432 added passive and active solar water-heating systems, passive and active solar space-heating systems, and solar-electric systems to the list of exempt technologies. The sales and use exemption covers both the equipment related to eligible systems, and labor (services) relating to the installation of eligible systems. The exemption has no expiration date. Consumers purchasing the eligible equipment or services must present form CERT-140 to the seller at the time of purchase. Certification Form CERT-140 is available on the Connecticut Department of Revenue Services website.
Data updated . Always confirm details on the official program website before applying. Programs change frequently.