EIA Expects Solar to Supply Nearly 10% of U.S. Electricity in 2027: What the Forecast Really Means
EIA’s November outlook puts solar at the center of generation growth
The U.S. Energy Information Administration’s November 10 Short-Term Energy Outlook expects the electric power sector to generate almost 4,390 billion kilowatthours in 2026, a record and about 2.7% more than in 2025. EIA says rising commercial demand and the past summer’s heat helped drive the increase. It forecasts slower growth of about 1.2% in 2027 as commercial and industrial demand continues to rise while milder summer weather reduces expected residential use.
The important solar finding is that EIA expects most U.S. generation growth over the forecast period to come from utility-scale solar. Its report places utility-scale solar at 7% of generation in 2025, 8% in 2026 and nearly 10% in 2027. EIA links that change to an expected 72 gigawatts of new solar capacity coming online across 2026 and 2027. For comparison, it expects about 20 gigawatts of new wind capacity over the same period.
Forecast is the key word
These figures are not a count of projects already operating. The 2025 share is historical, the 2026 estimate combines observed conditions with remaining-year assumptions, and 2027 is a forecast. Planned projects can be delayed by permitting, equipment supply, financing, transmission construction or the interconnection process that determines whether a generator can safely connect to the grid.
The national percentages also do not describe rooftop solar by itself. EIA’s outlook statement refers specifically to utility-scale plants—large projects that sell electricity into the power system. Rooftop and small commercial systems are part of a different customer decision involving site conditions, retail electric rates, net-metering rules, financing terms and the owner’s expected time in the property.
Pennsylvania, New Jersey and Florida are already moving at different speeds
EIA’s latest measured state table, released October 23 with data through August, helps put the national forecast in context. It estimates Pennsylvania solar generation from utility-scale and small-scale systems at 2,897 thousand megawatthours for January through August 2026, up 27.2% from the same period in 2025. New Jersey reached 4,272 thousand megawatthours, up 11.0%. Florida reached 23,682 thousand megawatthours, up 13.6%.
Those percentages should not be read as household savings rates. They measure electricity generation, not customer bills. Florida’s much larger total reflects a different market and resource base, including extensive utility-scale development. Pennsylvania’s faster percentage growth starts from a smaller total. New Jersey has a mature mix of utility and small-scale solar, but each customer still faces utility-specific interconnection procedures and current program rules.
More solar does not automatically mean lower bills
Additional solar can add energy supply during daylight hours and reduce fuel use at some times, but retail bills also include transmission, distribution, capacity, public-program charges, taxes and utility-approved cost recovery. Grid upgrades, financing costs, storage needs and the timing of production can affect the value of new generation. A national capacity forecast therefore cannot support a promise that a particular homeowner or business will save a stated amount.
The same caution applies to wholesale market claims. More generation can place downward pressure on energy prices at certain hours, yet congestion and limited transmission may prevent the lowest-cost power from reaching every customer. Evening peaks can also occur after solar output falls. Batteries, demand response and flexible loads can help shift energy across time, but their value depends on location, operating rules and compensation.
What homeowners should ask
A homeowner in Pennsylvania, New Jersey or Florida should ask for an estimate based on the property’s actual electricity use, roof orientation, shading, available roof area and utility tariff. The proposal should state expected annual production, equipment warranties, degradation assumptions, cash price, financed price, lender fees if any, and how exported energy is credited.
Customers should also ask what happens during an outage. Ordinary grid-connected solar normally shuts down when the grid fails unless the system includes equipment designed for backup operation. A battery quote should identify usable energy, continuous and surge power, which loads are backed up, and whether solar can recharge the battery during an extended outage.
What businesses and developers should ask
Commercial customers should compare the timing of solar production with their load profile, not just annual kilowatthours. Demand charges, roof condition, lease length, insurance, tax treatment and interconnection costs can materially change project economics. Developers should test whether a project has site control, a realistic interconnection path, credible equipment and construction schedules, and financing that can survive delays.
EIA’s 72-gigawatt expectation is useful evidence of national direction and market scale. It is not proof that every proposed project will be built or that every local market will grow at the same rate. Decisions should rest on current project documents and utility rules rather than a national percentage alone.
What This Means for Solar Customers and the Industry
The verified fact is that measured solar generation increased through August in Pennsylvania, New Jersey and Florida, while EIA now expects utility-scale solar to approach one-tenth of U.S. electricity generation in 2027. The forecast is evidence that solar is becoming a larger part of ordinary grid planning, not a niche resource.
Tower Solar’s interpretation is practical: growing national deployment strengthens the case for comparing solar seriously, but it also makes careful proposal review more important. Customers should use a location-specific estimate, compare cash and financing on equal terms, confirm utility treatment of exported power, and avoid treating broad national growth as a guarantee about one property. Tower Solar’s calculator, proposal-review resources and commercial guidance can help organize those questions before a purchase or development decision.
Sources and evidence
Original explanation based on publicly available sources. Source publication dates are separate from this article’s publication date.
- Short-Term Energy Outlook: Electricity, Coal, and RenewablesSource published 2026-11-10
- EIA November 2026 Short-Term Energy Outlook press releaseSource published 2026-11-10
- Electric Power Monthly Table 1.17.B: Solar photovoltaic generation by stateSource published 2026-10-23
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