Connecticut Solar Installation Timeline
From your first consultation to flipping the switch — here's what the solar process looks like in Connecticut.
How Long Does Solar Take in Connecticut?
Most Connecticut homeowners complete their solar installation in 2 to 4 months from the initial consultation to system activation. The majority of that time is permitting and utility interconnection approval — not the actual installation work.
Actual installation takes 1 to 3 days on-site. Here's the full breakdown:
1. Free Consultation
We review your electricity usage, roof condition, shading, and goals. You'll receive a detailed proposal with system specs, costs, incentives, and financing options. No obligation.
2. Signed Contract & Permit Application
Once you sign, your installer submits the construction permit application to your town (typically the building department). In Hartford County, this usually takes 1–2 weeks.
3. Permit Approval & Utility Interconnection
Your town issues the building permit, and your installer submits the utility interconnection application (for Eversource or United Illuminating). This is typically the longest phase — plan for 3–6 weeks total. Connecticut's interconnection process has improved but still requires patience.
4. Installation Day
Panel installation usually takes a single day. Mounting, wiring, and panel placement happen in one visit. If you're adding battery storage, that may take a second day.
5. Inspection & Utility Activation
Your town's building inspector signs off on the installation. Then your utility sends a representative to install a bidirectional meter and activate your system. Once they do, you're generating power.
6. Generating Power
Your system is now active. Eversource will notify you of your RRES enrollment and Buy-All Tariff rate confirmation. You'll see credits on your first bill following activation.
What Affects the Timeline?
- Roof replacement: If your roof needs work first, factor in 2–4 additional weeks. Most installers recommend addressing roof issues before solar installation.
- Battery storage: Adding ESS battery storage adds some complexity but is typically handled in the same permit application.
- Town workload: Some towns process permits faster than others. Simsbury, Glastonbury, and Farmington tend to move quickly; busier towns like Hartford may take longer.
- Utility queue: Eversource interconnection queue can vary by season. Summer months tend to be busier.
What You Need to Provide
- Copy of your electric bill (to verify account and usage)
- Proof of home ownership
- Roof diagram (your installer handles the technical survey)
- HOA approval letter (if applicable — Connecticut law limits HOA authority to prohibit solar)
Ready to Start?
The first step is the free consultation. We'll give you a realistic timeline based on your specific address and utility.
Get Your Timeline Estimate →