Community Solar vs Rooftop Solar: Which Saves More?

If you're evaluating solar options for your home, you've probably run into two names: rooftop solar and community solar. They're not the same thing — and for most households in Maryland and Illinois, they're not even close in terms of accessibility or upfront cost.

This guide breaks them down head-to-head across the five dimensions that actually matter: cost, eligibility, installation, savings, and contract terms.

The Short Answer

If you own a home with a suitable roof, good south-facing exposure, and $15,000–$25,000 to spend — rooftop solar is a legitimate option. But most households don't check all those boxes.

If you rent, have a shaded roof, live in an apartment, or don't want to deal with a 20-year lease — community solar is your only real path to solar savings, and it costs nothing to start.

Here's the direct comparison:

Upfront Cost: The Biggest Difference

Rooftop solar's biggest barrier isn't availability — it's cost. A full residential installation runs $15,000–$25,000 before incentives. Even with the federal 30% Investment Tax Credit, you're still looking at $10,500–$17,500 out of pocket. Leasing avoids the purchase cost, but locks you into a 20–25 year agreement and you don't own the equipment.

Community solar costs nothing to start. You subscribe to a share of a solar farm, receive monthly bill credits, and pay nothing upfront. The program is designed for exactly this: making solar accessible to people who can't or don't want to spend $15,000–$25,000 on a home improvement.

In Maryland specifically, state law requires community solar credits to be priced below the retail utility rate — meaning subscribers always save. If your solar output exceeds your usage in a given month, Maryland law caps your bill at the fixed customer charge ($9.65/month for BGE). That's the floor.

Who Can Use Each Option?

Rooftop solar has hard requirements that eliminate a large portion of households:

• You must own the property (or get landlord written approval)
• Your roof must be suitable: south-facing, unshaded, structurally sound
• You need good credit for most leases and loans
• You need the capital for purchase or a large down payment

Community solar requirements are minimal: an active utility account in your name (BGE, Ameren, Pepco, Delmarva, or SMECO), and you must live in a state with an active community solar program. Maryland and Illinois both have permanent programs. See how community solar works in more detail →

Installation: Nothing vs. A Construction Project

Rooftop solar installation is a weeks-long process: permits, engineering assessments, electrical panel upgrades, installation crews on your roof for days, inspections, and utility interconnection approval. Something goes wrong with the roof or electrical system? The project gets delayed or killed.

Community solar installs nothing on your property. A solar farm is built in your utility territory. You subscribe to a share. The energy credit appears on your bill. The process from signup to first savings typically takes 4–8 weeks — no workers at your home, no permits pulled at your address, nothing.

What About Long-Term Savings?

Rooftop solar proponents often cite 20-year savings of $30,000–$60,000. These numbers assume ideal conditions: a perfect roof, full sun exposure, consistent electricity rate increases, and a system that performs as rated for two decades without major repairs.

Community solar doesn't try to outlast the rooftop pitch. It delivers immediate savings — typically 10–20% off your monthly electric bill — with no capital at risk. You don't own panels. You don't pay for repairs. If you move, most plans are transferable. If the plan doesn't work for you, you exit and try something else.

The question isn't which is theoretically better over 25 years for an ideal homeowner. It's which option is actually accessible and actually saves you money right now — without requiring a second mortgage.

Real Savings Comparison

Here's what the math looks like for a household paying $175/month on electricity:

That $315/year comes with no upfront investment, no installation, and no 20-year commitment. Compare that to the $15,000–$25,000 required to buy a rooftop system that might save more in year 10 but costs a lot more in year 1.

When Rooftop Solar Actually Makes Sense

Rooftop solar is the right call when:

• You own your home and plan to stay 10+ years
• Your roof gets excellent sun exposure (no major shading)
• You have the capital to buy outright or qualify for a low-interest loan
• You want to own your generation assets and potentially sell excess power back to the grid

For everyone else — renters, people with shaded roofs, anyone who might move within 5 years, anyone who doesn't want a 20-year obligation — community solar delivers real savings with none of the risk.

Is Community Solar Worth It?

Yes — for the majority of Maryland and Illinois households who don't own a sun-drenched home.

Community solar provides the only accessible path to solar bill savings for renters, apartment dwellers, homeowners with shaded or unsuitable roofs, and anyone who doesn't want to spend $15,000+ upfront or sign a 20-year lease. The upfront cost difference alone is enough to decide it for most people: $0 vs. $15,000–$25,000, with comparable monthly savings.

Use the SunFunnel savings calculator to see what community solar savings look like for your specific ZIP code and bill amount. Takes two minutes, no commitment required.

Frequently Asked Questions

Q: Can I switch from rooftop solar to community solar?
A: Yes. If you have an existing rooftop solar lease or PPA, you can cancel it (usually with a buyout or transfer to a new homeowner) and enroll in community solar. Many SunFunnel clients come from rooftop programs that didn't work out as expected.

Q: Does community solar affect my roof or property?
A: No. Nothing is installed at your home. You subscribe to a share of a solar farm that's been built elsewhere in your utility territory. The billing credit flows through your utility account automatically.

Q: How do I know the solar farm is actually producing?
A: Community solar programs are regulated by state utility commissions. In Maryland, the program scored 13 out of 13 on the 2025 Community Power Scorecard. Your utility handles billing and credit allocation — you receive credits based on actual farm output, calculated monthly.

Q: What happens if my community solar output exceeds my usage?
A: In Maryland, state law caps your bill at the fixed customer charge ($9.65/month for BGE) in months when your solar output exceeds your consumption. You don't pay more — you just pay the minimum.

Q: Can I use community solar if I live in an apartment?
A: Yes. Community solar is tied to your utility account, not your property. Renters with active BGE, Pepco, or other participating utility service are eligible. No landlord permission needed.

Q: What's the real difference between community solar and solar panels?
A: Solar panels are installed on your roof — you own or lease them, they generate electricity at your property, and they require upfront capital. Community solar is a subscription to a solar farm elsewhere in your utility territory — you pay nothing upfront, install nothing, and receive bill credits based on the farm's output.

Ready to see your savings? Run your free community solar savings estimate → Takes two minutes, no commitment required.

Related Reading

• What Is Community Solar? How It Works (Plain-English Guide)
• BGE Raised Rates Again in 2026 — Here’s How Homeowners Are Pushing Back
• How Maryland Renters Save 10–20% on BGE Bills with Community Solar (2026 Guide)
• Community Solar vs Other Enrollment Options →

StarShine LLC helps Maryland and Illinois homeowners, renters, and businesses access community solar savings. Questions? Reach us at sunfunnel@polsia.app.