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Connecticut homeowners have two solar paths: subscribe to a community solar farm through the SCEF program, or install panels on your own roof under RRES. With the residential ITC dead (25D expired Dec 31, 2025) and electricity rates among the highest in the nation, making the right choice matters more than ever. Here is the honest, data-driven comparison.
$0.29/kWh
Eversource Avg Rate
5-15%
Community Solar Savings
$2.98/W
Avg Rooftop Cost
$0
Federal ITC (25D Expired)
Rooftop solar saves significantly more money long-term. A cash-purchased 11 kW system delivers $55,000-$75,000 in total value over 25 years versus $3,800-$11,400 from a community solar subscription. Even with the federal residential ITC expired (25D died December 31, 2025), Connecticut's RRES netting tariff, 6.35% sales tax exemption, and permanent property tax exemption make rooftop economics strong.
Community solar is the better choice if you cannot install panels. If you rent, own a condo, have heavy roof shading, or need a new roof within 5 years, the SCEF program gives you 5-15% bill savings with zero installation, zero upfront cost, and the flexibility to cancel with 30-90 days notice.
For homeowners who want $0 down rooftop: Lease or PPA options let a third-party owner claim the Section 48E commercial ITC (still available for projects beginning construction before July 4, 2026) and pass that savings to you as a lower monthly payment. This delivers 3-5x more annual savings than community solar.
14 criteria that matter most when choosing between community solar and rooftop solar in Connecticut. Green checks show an advantage.
| Criteria | Community Solar (SCEF) | Rooftop Solar (RRES) |
|---|---|---|
| Upfront Cost | $0 | --$28,600-$34,100 (cash) or $0 (lease/PPA) |
| Monthly Savings | 5-15% off electric bill | 80-100% bill offset (cash) / 15-25% lower than utility (lease) |
| Ownership | No — subscription only | Yes (cash/loan) or TPO initially (lease/PPA) |
| Home Value Added | $0 | $15,000-$25,000 (owned systems) |
| Roof Required | No | Yes — south/west facing, good condition |
| Credit Score | None | --None (cash) / 660+ (Propel) / varies (PPA) |
| RRES Netting Tariff | No — uses SCEF credit mechanism | Yes — retail-rate credits for excess generation |
| Solar Energy Adjustment | Not applicable | $0.0402/kWh on all production (2026 enrollees) |
| Federal Tax Credit | Farm owner keeps it (48/48E) | --25D expired — $0 for cash/loan. TPO claims 48E for lease/PPA. |
| CT Sales Tax Exemption | Not applicable — you do not buy equipment | 6.35% exempt — saves ~$2,081 on 11 kW system |
| CT Property Tax Exemption | Not applicable | Permanent 100% exemption — value up, taxes flat |
| Maintenance | Not your responsibility | --Minimal (owned) / TPO handles (leased) |
| Moving | Cancel with 30-90 day notice, re-subscribe at new address | Stays with home — adds to sale price |
| 25-Year Total Value | $3,800-$11,400 | $55,000-$75,000 (cash) / $20,000-$35,000 (lease/PPA) |
Community solar wins on accessibility: no roof, no credit score, no upfront cost, and zero maintenance. Rooftop solar wins on total value: higher savings, home equity, tax exemptions, and long-term energy independence. The right choice depends on your living situation, budget, and timeline.
Community solar in Connecticut operates through the Shared Clean Energy Facility (SCEF) program, regulated by PURA (the Public Utilities Regulatory Authority). Instead of installing panels on your roof, you subscribe to a share of a nearby solar farm. That farm generates electricity and feeds it into the grid. Your share of the production appears as a credit on your Eversource or United Illuminating bill.
In Connecticut, residential virtual net metering (VNM) is restricted to municipal, state agency, and agricultural customers. Residential community solar subscribers use a different billing credit mechanism under SCEF, which typically provides lower per-kWh value than the retail-rate credits rooftop solar owners receive through RRES. This is a key reason community solar savings are modest (5-15%) compared to rooftop (80-100% offset).
On an average Eversource bill of $250/month ($3,000/year), community solar savings of 5-15% translate to $150-$450 per year. Over a 10-year subscription, that is $1,500-$4,500 total. Meaningful, but far less than rooftop ownership which delivers $55,000-$75,000 over 25 years. For a deeper look, see our full CT community solar guide.
Rooftop solar means installing panels directly on your home. Your system generates electricity that powers your home first. Any excess is exported to the grid and you receive credits under the RRES (Residential Renewable Energy Solutions) netting tariff. Panels are a 25+ year asset that can eliminate most or all of your electric bill.
$2.60-$3.10
Per watt (2026)
$28,600-$34,100
11 kW system total
-$2,081
Sales tax exemption (6.35%)
$0
Federal ITC (25D expired)
Pay approximately $32,780 upfront for an 11 kW system. No monthly payments. You own the system outright. No federal tax credit available (25D expired).
Finance through CT Green Bank's Smart-E Loan at 6.99-7.99% APR. $0 down with monthly payments. You own from day one. Up to $50K financed.
A third-party owner (TPO) installs and owns the system. They claim the Section 48E commercial ITC (available before July 4, 2026) and pass savings to you as a lower fixed monthly payment.
Rooftop solar owners receive retail-rate credits for excess electricity exported to the grid. Credits roll over monthly with no expiration. This is significantly more valuable than SCEF community solar credits. You can also choose the Buy-All option at $0.3289/kWh locked for 20 years.
Full RRES guide2026 enrollees pay $0.0402/kWh on all solar production (not just exports). For an 11 kW system producing approximately 11,750 kWh/year, this is about $472/year. Legacy customers (pre-2026) pay only $0.005/kWh ($59/year).
This reduces savings but does not eliminate rooftop's advantage: net annual benefit is still approximately $2,936/year, far above community solar's $150-$450/year.
Connecticut exempts residential solar equipment from both sales tax (6.35%) and property tax (permanent). On a $32,780 system, the sales tax exemption alone saves approximately $2,081. Your home value increases by an estimated $15,000-$25,000 without any additional property tax. Community solar subscribers do not receive these benefits. See our CT solar tax exemptions guide for details.
Based on an 11 kW system, Eversource rates at $0.29/kWh, and 3% annual rate escalation. Rooftop assumes $0.0402/kWh Solar Energy Adjustment for 2026 enrollees.
| Metric | Community Solar | Rooftop (Cash) | Rooftop (Lease/PPA) |
|---|---|---|---|
| Upfront Cost | $0 | $32,780 | $0 |
| Annual Savings (Year 1) | $300 | $2,936 | $720 |
| Rate Escalation Hedge | Partial — credit grows with rates | Full — own your power | Full — fixed payment |
| CT Sales Tax Savings | $0 | $2,081 | $0 (TPO claims) |
| Home Value Added | $0 | $15,000-$25,000 | $0 until buyout |
| Payback Period | N/A — no investment | 10-12 years | Day 1 savings |
| Total 25-Year Value | $3,800-$11,400 | $55,000-$75,000 | $20,000-$35,000 |
$3,800-$11,400
Community Solar 25-Year Value
5-15% bill savings, no equity
$55,000-$75,000
Rooftop Cash 25-Year Value
Including home value increase
$20,000-$35,000
Rooftop Lease/PPA 25-Year Value
$0 down, 48E ITC benefit
Your ideal solar path depends on your living situation. Find yours below.
Your only option. Subscribe to SCEF for 5-15% bill savings. No roof or landlord permission needed. Cancel when your lease ends.
Unless your HOA approves a shared rooftop system, community solar is your path. No building modifications required.
Mature trees or neighboring buildings blocking your roof? Panels need 4+ hours of direct sun. Subscribe to SCEF instead.
Maximum savings. Choose cash for best 25-year ROI, or lease/PPA for $0 down with 48E ITC benefits. Either way, rooftop wins big.
Community solar if you are leaving soon (just cancel). Rooftop if you want the $15K-$25K home value boost for resale. Leased systems must transfer to buyer.
Replace your roof first, then install panels. Community solar is a good interim option while you plan the roof project. Do not install on a deteriorating roof.
Yes, in some cases. If your rooftop system is undersized relative to your electricity consumption, combining both options can make sense. Here are the scenarios where a hybrid approach works.
Your roof can only accommodate 7 kW but you need 11 kW of production. Install rooftop for the portion your roof supports, then subscribe to SCEF for the remaining gap. You get rooftop's higher-value RRES credits for most of your production plus community solar credits for the rest.
You installed rooftop solar two years ago, but you have since added an EV, heat pump, or home addition that increased your consumption beyond your system's output. Community solar through SCEF can cover the incremental demand without expanding your rooftop array.
Most homeowners do not need both. If your roof can accommodate a properly sized system (11 kW covers the average CT home), rooftop alone is the best economic choice. The hybrid approach is a niche solution for specific constraints. If you are unsure whether your roof can handle a full system, get a free assessment and we will tell you exactly what fits.
Answer a few questions about your home, roof, and energy usage. In 60 seconds, you'll see whether rooftop solar or community solar is the better fit — with real numbers based on your Eversource or UI rate.