Microinverters vs. string inverters.
The inverter decision shapes how your system performs for 25 years. Here's how the two approaches compare — and why we install one of them on every St. Pete roof.
Every panel makes DC power. Something has to convert it.
Solar panels generate direct current (DC), and your home runs on alternating current (AC). The inverter does the conversion — and where it lives changes everything about how the system behaves.
Microinverters
One small inverter under each panel
Every panel gets its own inverter mounted on the racking right beneath it. Each panel produces its own AC power independently, converts it on the roof, and reports its own production data.
String Inverters
One central inverter, panels wired in series
Panels are wired together in strings — like old holiday lights — and feed a single central inverter, usually mounted on a wall. The whole string performs only as well as its weakest panel.
Built for Florida roofs.
Between the palms, the afternoon storms, and the punishing sun, St. Petersburg roofs are not simple, unshaded planes. That's exactly the environment microinverters are designed for.
Panel-Level Optimization
Each panel produces independently, so shade from a palm tree, a cloud, or a chimney only affects the panels actually shaded — not the whole array. In Florida, that matters every afternoon.
Panel-Level Monitoring
See the production of every single panel, not just the system total. If one panel underperforms, we know exactly which one — and so do you.
Rapid Shutdown Safety
Built-in rapid shutdown brings panel voltage to a safe level for first responders — required by code, and native to microinverter systems.
25-Year Warranty
Enphase microinverters are warranted for 25 years. A typical string inverter carries about 10–12 years and is the single point of failure for the whole system.
Grid-Down Operation
Enphase IQ8 microinverters can keep producing power for your home even when the grid is down — string inverters simply shut off.
And the honest case for string
On a simple, completely unshaded roof, a string inverter can cost slightly less up front. If your roof looks like that — no palms, no vents, no chimneys in the sun's path — we'll tell you. Most St. Pete roofs don't.
For St. Pete homes, microinverters are the right call.
Palms, afternoon thunderstorms, partial shade, and a 25-year horizon — put it all together and panel-level optimization isn't a luxury, it's the obvious choice. That's why St Pete Solar installs Enphase IQ8 microinverters on every system we build.
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