Plug-in solar in Connecticut
Connecticut HB 5340 passed the House 99–43 on May 1, 2026, and the Senate 27–9 on May 7, 2026; Governor Ned Lamont signed the bill as Public Act 26-127 on May 20, 2026, with provisions allowing plug-in solar devices up to 1,200 watts without utility interconnection approval taking effect October 1, 2026.
What HB 5340 actually allows
System size
Up to 1,200W AC
UL-listed or NRTL-certified certification required. Multiple plug-in solar devices are permitted provided their combined output does not exceed 1,200 watts AC; devices must also comply with the National Electrical Code and Connecticut state building and fire codes.
No utility approval
Interconnection waived
No application to your utility required. Self-installation with listed equipment is sufficient.
Days until law takes effect
—
Effective date: October 1, 2026
Plug-in solar will be legal in Connecticut as of October 1, 2026. You cannot connect a plug-in system to the grid until that date.
Get notified the day this law takes effect
We'll email you as soon as plug-in solar becomes legal in Connecticut — so you know exactly when you can install.
Where HB 5340 stands right now
Introduced
Committee
Floor Vote
May 7, 2026
Signed
May 20, 2026
Takes effect
Oct 1, 2026
Signed
Governor Ned Lamont signed HB 5340 into law as Public Act 26-127, making Connecticut the sixth state to legalize plug-in solar devices.
Recent updates
May
20
2026
Governor Ned Lamont signed HB 5340 into law as Public Act 26-127, making Connecticut the sixth state to legalize plug-in solar devices.
May
7
2026
Connecticut Senate passed HB 5340 by a vote of 27–9, sending the bill to Governor Ned Lamont's desk for signature.
May
1
2026
Connecticut House passed HB 5340 by a vote of 99–43, advancing the plug-in solar bill to the Senate.
Mar
19
2026
The Joint Committee on Energy and Technology voted 18–8 to report HB 5340 as Joint Favorable, advancing the plug-in solar bill to the full legislature.
Feb
26
2026
Connecticut HB 5340 was introduced and referred to the Joint Committee on Energy and Technology for review.
What an 800W system saves in Connecticut
Monthly savings
$24
Annual savings
$287
Payback period
~4 yrs
Based on 28.51¢/kWh avg rate · 800W system · 4.2 peak sun hours/day
Products Available in Connecticut
Connecticut has passed enabling legislation (HB 5340). Plug-in grid connections take effect on the law's effective date — browse certified systems and components available in Connecticut in the meantime.
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