Community Solar vs. Rooftop Solar
Rooftop solar costs far more upfront but you own the system and capture its full production value. Community solar has almost no upfront cost but typically delivers a smaller ongoing benefit. This compares the two on total cost.
At your inputs, community solar costs $7,950 less over 10 years.
| Community solar subscription total cost over the horizon | $17,050 |
|---|---|
| Rooftop solar system total cost over the horizon | $25,000 |
Breakeven: The higher upfront cost is offset by year 17.9, after which rooftop solar stays cheaper.
- This uses planning estimates you entered, not a contractor quote or guaranteed savings.
- A lower calculated cost does not measure ownership, home value impact, or long-term control over the system; weigh those separately.
What this also tells you: Even if your annual costs are 20% higher or lower than entered, the same option stays cheaper, with the advantage ranging from $9,950 to $5,950.
This is a planning estimate based on your entries. It does not size equipment, determine electrical or building-code compliance, verify incentive eligibility, or replace a contractor quote or professional energy audit.
Why this decision comes up
A homeowner weighing solar options deserves to see community solar's genuinely lower-cost, lower-commitment path compared honestly against a full rooftop installation.
How this is calculated
Both paths are compared as total cost over your ownership horizon: net cost plus annual cost carried forward.
A worked example
With the defaults (community solar: $50 net cost, $1,700/year; rooftop: $18,000 net cost, $700/year; 10-year horizon), community solar totals $17,050 against $25,000 for rooftop, a $7,950 advantage for community solar at these defaults over this horizon, though a longer ownership horizon or a home-value benefit from rooftop solar could change that.
Common mistakes
A common mistake is comparing these two options purely on upfront cost without checking how the total picture changes over your actual expected ownership horizon.
Limitations
This does not value rooftop solar's potential home-resale impact or the greater control an owned system provides, both real considerations beyond pure utility bill cost.
Common questions
Why would rooftop solar ever lose this comparison?
Over a shorter ownership horizon, or for a homeowner who might move, rooftop solar's large upfront cost may not be fully recovered, while community solar has no such upfront commitment.
Does rooftop solar's home-value impact factor into this?
No, this compares only the direct utility bill cost. Rooftop solar's potential home-value impact is a separate consideration this tool does not attempt to value.
Can I do both, community solar now and rooftop later?
Some households do transition this way, though contract terms for community solar may include cancellation considerations. Check your specific program's terms.
Does my roof's condition or orientation factor into this comparison?
Indirectly. A roof unsuitable for solar, heavy shade, poor orientation, or one needing replacement soon, effectively removes rooftop as a real option regardless of the cost math, making community solar the only genuine choice.
Does a battery change this comparison?
A battery pairs with rooftop solar, not community solar, so adding one only affects the rooftop side's economics. See the battery-with-solar-value tool to price that addition separately.