Rooftop Solar Is No Longer Niche: What a Decade of Growth Means for Florida, Pennsylvania and New Jersey
A major shift is now visible in the data
Small-scale solar has moved from a specialized energy option to a meaningful part of the U.S. electricity system. On October 16, 2026, the U.S. Energy Information Administration reported that estimated generation from solar systems smaller than 1 megawatt increased from 18,812 gigawatthours to 92,979 gigawatthours over the last decade. That is close to five times the earlier level.
EIA’s definition includes rooftop systems and other small installations at homes and businesses. One gigawatthour equals one million kilowatthours. The national total is therefore not a count of panels or customers; it is an estimate of the electricity those systems produced.
Florida’s growth stands out
Florida’s estimated small-scale solar generation rose from 205 gigawatthours in 2016 to 5,198 gigawatthours in 2025, according to EIA. That is more than a twenty-fivefold increase. Florida is now among the four leading states for small-scale solar generation, alongside California, Arizona and Texas.
A separate EIA Florida profile says solar supplied 11% of the state’s total net electricity generation in 2025. About five-sixths came from utility-scale projects, meaning large power plants rather than rooftop systems. The distinction matters: Florida’s solar market is growing quickly, but a large state solar total does not mean every homeowner has the same opportunity or economics.
What the numbers measure—and what they do not
Utilities generally know how many customers have interconnected solar and the combined capacity of those systems. They do not necessarily measure every kilowatthour produced behind the meter. EIA therefore estimates small-scale production using utility survey data and modeling tools, including NREL’s System Advisor Model and PVWatts.
That makes the data useful for tracking broad change, but not for predicting one property’s result. A shaded roof, an older roof, an unfavorable orientation or a poorly designed system can perform very differently from a statewide average. Likewise, a system’s production is not the same as its dollar value. The value depends on when the electricity is used, the utility tariff, export-credit rules, fixed charges and the customer’s financing.
Why growth has not produced identical markets
EIA notes that technology improvements, state programs, utility programs and changes in net-metering policy all influence adoption. Net metering is the billing arrangement that determines how a customer receives credit for excess electricity sent to the grid. California’s experience shows how policy changes can shift installation timing: customers rushed to qualify for its older compensation structure before a lower-value successor took effect.
Florida, Pennsylvania and New Jersey therefore should not be treated as interchangeable. Pennsylvania DEP says qualifying residential systems can use net metering, while New Jersey has state-supported solar programs. Florida rules and utility tariffs also shape customer value. Before accepting a proposal, customers should verify the rule that applies to their exact utility and rate class instead of relying on a national sales presentation.
What Florida homeowners should ask
Florida’s rapid growth is evidence of a mature and active market, not proof that every quote is a good deal. Homeowners should ask for the cash price before discussing a monthly payment, the assumed first-year production, annual degradation, roof age, wind-load design, equipment warranties and the exact utility export treatment used in the savings model.
They should also compare the proposal against recent electric bills. A salesperson’s generic estimate cannot substitute for actual annual consumption and the property’s solar exposure. Tower Solar’s estimate and proposal-review tools are designed to help customers test assumptions before they share extensive personal information or sign a contract.
What Pennsylvania and New Jersey customers should ask
In Pennsylvania, customers should confirm that the proposed system and interconnection qualify under the applicable utility rules, then compare projected production with realistic weather and shading assumptions. Pennsylvania DEP’s homeowner resources also encourage residents to evaluate installers, costs and incentives carefully.
In New Jersey, customers should separate the physical performance of the system from any incentive value. Ask who owns or receives the environmental credits, what happens if the home is sold, which assumptions are guaranteed, and which are merely projections. Incentive availability can change, so the current program terms should be checked directly before a contract is signed.
The commercial lesson is different
For businesses, the main question is often not simply how much solar can fit on the roof. It is how closely production matches the facility’s daytime load, whether demand charges are important, and whether storage or load shifting can improve the project. A warehouse, office and refrigerated facility can have very different value from the same-size array.
Developers should also treat interconnection capacity, site control, permitting and utility timelines as separate risks. National growth does not remove local grid constraints. A credible commercial proposal should identify those risks and show which party is responsible for each step.
What this trend really means
The verified fact is that small-scale solar generation has grown dramatically. The interpretation is that solar is becoming a normal part of energy planning for households and businesses. The opinion Tower Solar brings to the discussion is that a larger market makes independent comparison more important, not less.
Growth attracts experienced installers, better tools and more equipment choices. It can also attract rushed sales, confusing financing and savings claims built on aggressive assumptions. The right response is not to assume solar works everywhere or nowhere. It is to evaluate the property, utility, price, contract and production model together.
Questions to answer before moving forward
Ask for the total cash price and financed price; the exact annual production estimate; the weather, shading and degradation assumptions; the current utility tariff and export credit; the roof work needed before installation; the equipment and labor warranties; who owns incentives or credits; and what happens after a home sale or business relocation.
EIA’s new data show where the market has gone. A careful project review determines whether a specific customer should follow it.
Sources and evidence
Original explanation based on publicly available sources. Source publication dates are separate from this article’s publication date.
- U.S. small-scale solar generation has quadrupled in the last decadeSource published 2026-10-16
- Florida State Energy ProfilePublication date not provided. Accessed 2026-11-05
- Solar Energy Resources for ResidentsPublication date not provided. Accessed 2026-11-05
- Annual Electric Power Industry Report, Form EIA-861 detailed data filesSource published 2026-10-07
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