What is the name of the device that converts DC to AC?

The device is called an inverter. In a photovoltaic system, it's specifically called a solar inverter or PV inverter, and it's the component most people mean when they say solar converter.

How do you convert solar DC power to AC?

The solar inverter handles the conversion, switching the direction of the DC current rapidly to build an AC waveform, then matching that output to the grid's voltage, frequency, and phase for grid-tied systems.

Can a solar DC-to-AC converter work without a battery?

Yes. Most grid-tied solar systems use an inverter without a battery, converting panel DC electricity into AC for immediate use or export to the grid. A standard grid-tied inverter usually shuts down during a utility outage unless the system includes approved backup equipment.

How much does a solar converter cost?

Since a solar converter is typically a solar inverter, cost depends on inverter type and system size. Residential inverters generally run from about $1,000 to $2,600, with string inverters on the lower end and microinverters or hybrid inverters on the higher end.

Solar Converter vs. Inverter: What's the Difference?

Q: What is the difference between a converter and an inverter?

A power converter is the broad category. An inverter is a specific type of converter that changes DC power to AC power. Other converter types, like rectifiers and DC-to-DC converters, handle different jobs.

Q: Is solar power AC or DC?

Both, depending on where you look in the system. Solar power is DC at the panel and stays DC through any battery storage, becoming AC only after passing through the inverter.

Q: Are solar batteries AC or DC?

Solar batteries store energy internally as DC. That energy passes through a shared hybrid inverter or the battery's own dedicated inverter before becoming AC power for the home, depending on the system's coupling architecture.

Sarah Lozanova
Jul 28
7 min read

og:image)solar converter vs inverter: DC to AC power conversion diagram

Table of Contents

-- AC Vs. DC Power in Solar Systems

-- Solar Converter Vs. Solar Inverter

-- Do Solar Panels Produce AC or DC?

-- Are Solar Batteries AC or DC?

-- Electrical Terms for Solar Converters

-- Charge Controller Vs. Solar Converter

Solar installers and homeowners searching for a "solar converter" are almost always looking for one thing: the device that turns the DC power from solar panels into the AC power a home or business can use. In nearly every case, that device is a solar inverter.

The terms solar converter, solar panel converter, and solar power converter get used interchangeably with solar inverter in everyday conversation, but they are not technically the same thing. A converter and an inverter perform different jobs in an electrical system. Knowing the difference helps you speak accurately with customers, spec the right equipment, and avoid confusion during a site survey or sales conversation.

Quick answer: A solar inverter converts DC power to AC power and is the component most people mean when they say "solar converter." A true converter changes voltage (DC to DC) or changes AC back to DC, jobs typically handled by charge controllers, power optimizers, or battery chargers rather than the main solar inverter.

AC Vs. DC Power in Solar Energy Systems

Electricity comes in two forms: AC and DC power. These terms describe the direction of current flow in a circuit. In DC power, current flows in a single direction. In AC power, electrons switch direction, moving forward and backward many times per second.

AC is the standard for homes, appliances, and the electrical grid because it transmits more efficiently over long distances. Anything plugged into a wall outlet, from refrigerators to routers to water heaters, runs on AC power. Solar panels, by contrast, generate DC power, so a solar energy system needs a way to convert that DC electricity into usable AC power. That job belongs to the solar inverter, the device most people call a solar converter.

solar panel DC power converting to AC through a solar inverter

Solar Converter Vs. Solar Inverter: What's the Difference?

Technically, a converter and an inverter are not interchangeable terms. An inverter converts DC electricity into AC electricity. A converter changes voltage within the same current type (DC to DC) or converts AC back into DC, which is the opposite function of an inverter.

In solar, the confusion comes from casual language. When someone says "solar converter," they are almost always describing the solar inverter, since that is the main piece of equipment converting the panels' DC output into usable AC power.

Term	Technical Function	Where You'll See It in Solar
Solar Inverter	Converts DC to AC	Main equipment that makes panel output usable in the home or grid; commonly called a "solar converter"
DC-to-DC Converter	Steps voltage up or down within DC current	Charge controllers, power optimizers, and some off-grid voltage converters
AC-to-DC Converter	Converts AC to DC, the reverse of an inverter	RV converters and battery chargers that recharge a DC battery from an AC source

Because the terms overlap so much in everyday use, it's worth clarifying with a customer or colleague which specific component they mean, especially if the project includes a charge controller or an off-grid battery bank in addition to the main inverter.

Do Solar Panels Produce AC or DC Power?

Solar panels generate DC electricity, which must be converted to AC power for use with standard household appliances. A solar inverter, sometimes called a solar converter, handles this conversion. Some off-grid system owners choose DC appliances to skip the inverter entirely, but the selection of DC-compatible appliances is far more limited than standard AC options.

Are Solar Batteries AC or DC?

Solar batteries store energy in DC form. When solar panels generate electricity from sunlight, that power is stored as DC energy in the battery. To use the stored energy for home appliances, the inverter, commonly called a solar converter, transforms the DC power into AC power, the standard for most household devices. This conversion allows stored solar energy to integrate seamlessly into a home's electrical system.

Key Electrical Terms for Understanding Solar Panel Converters

There is a lot of terminology specific to electricity, and understanding it helps explain how solar converters work. Customers are often unfamiliar with these terms, which can make it harder for them to understand how their system operates. Here are a few terms worth explaining during a site survey or on your company website.

Voltage: The potential of power to move, measured in volts. Using a water analogy, voltage is the water pressure.

Ampere: The strength of electrical current, expressed in amps. In the water analogy, this is the flow rate.

Watts: The measurement of power, expressed in watts, kilowatts, and megawatts. A kilowatt equals 1,000 watts, and a megawatt equals 1,000,000 watts.

Kilowatt-hours: A measurement of electricity use over time. Most electricity bills are measured in kilowatt-hours, equal to 1,000 watts used for one hour.

Megawatt-hours: A megawatt-hour equals 1,000 kilowatt-hours used for one hour.

Types Of Solar Panel Converters and Inverters

All solar converters, or solar inverters, serve the same essential purpose: converting DC power from solar panels into AC power for use in homes and businesses. As a solar installer, you have three primary options to consider when choosing the right type of inverter for a project.

string inverter, power optimizer, and microinverter types for solar panels

String Solar Panel Converters (Central Inverters)

In a string inverter setup, panels are wired in series, forming a "string." Multiple strings connect to a central inverter, often mounted outside the home, in a basement, or in a garage. Larger systems sometimes use multiple central inverters for greater efficiency.

Because string inverters are centralized, the entire system can stop producing if the inverter fails. On the plus side, these units are typically not installed on rooftops, making them easier to access for maintenance and repairs. String inverters without power optimizers work well for simple roof layouts with minimal shading, and when keeping equipment costs down is a priority.

String Solar Inverters With Power Optimizers

Installers can add power optimizers to each panel to boost output and condition the power before it reaches the inverter, which some customers still call a solar converter. Optimizers are a good fit when shading or complex roof lines are a factor, and they can also help meet NEC 2017 rapid shutdown requirements.

Keep in mind that optimizers add to equipment costs, and because they sit on each panel, maintenance is more involved if one fails.

Solar Microinverters: Panel-Level Solar Energy Converters

Microinverters, sometimes called solar panel converters, convert DC power to AC power directly at each panel. In a 20-panel array, that means 20 microinverters, one per panel. Because each panel operates independently, shading on one panel does not drag down the performance of the rest of the array.

Microinverters generally cost more than string inverters without optimizers, but they offer real advantages on installations with shading concerns. Like optimizers, they mount to the back of each panel, which makes maintenance slightly more difficult than with a central string inverter. Microinverters also help meet NEC rapid shutdown requirements, supporting both safety and code compliance.

Need help specifying the right inverter type for a project? GreenLancer's solar permit design service builds code-compliant plan sets around your equipment choices, whether that's a string inverter, optimizers, or microinverters.

Solar Charge Controller Vs. Solar Converter

Solar systems need inverters to convert voltage from DC to AC. Charge controllers, on the other hand, are only needed on solar systems with batteries, in both grid-tied and off-grid applications. So every project needs a string inverter or microinverters, but only projects with a battery bank need a charge controller too. In rare off-grid cases with DC appliances, a voltage converter may also come into play.

Choosing the Right Equipment for Your Project

The equipment you select for a client depends largely on their energy needs, property, budget, and whether the system includes battery storage. When a customer asks about a "solar converter," it's a good opening to explain what the inverter actually does and how it fits into the rest of the system.

Starting each project by understanding the goals and budget makes it easier to recommend the right combination of inverter, optimizers, and charge controller, and to explain those choices clearly to the customer.

Whether you're a solar contractor looking for fast, code-compliant permit plan sets or a homeowner in need of expert solar repairs or upgrades, GreenLancer has you covered. Our U.S.-based team and nationwide network of licensed professionals deliver reliable support for every stage of your solar projects.

Permit Plans & Engineering

Solar Repairs & Upgrades

FAQs About Solar Converters and Inverters

What is a solar converter?

A solar converter is the everyday term most people use for a solar inverter, the device that converts DC electricity from solar panels into AC electricity for use in a home or business. Technically, a converter changes voltage or current type in other ways, but in casual use, "solar converter" almost always refers to the inverter.

Is a solar converter the same as a solar inverter?

In most conversations, yes. The device people call a solar converter is functionally a solar inverter. The two terms are used interchangeably in the solar industry, even though they describe technically different functions in electrical engineering.

What is the difference between a converter and an inverter?

An inverter converts DC power to AC power. A converter changes DC voltage levels or converts AC back to DC. In a solar system, the inverter handles the main DC-to-AC conversion, while converter-type functions show up in components like charge controllers and RV battery chargers.

Do solar panels produce AC or DC power?

Solar panels produce DC power. An inverter, often called a solar converter, transforms that DC electricity into the AC power used by most household appliances and the electrical grid.

Is solar power AC or DC?

Solar power starts as DC electricity at the panel. It becomes AC power once it passes through the inverter, which is the point where solar energy becomes usable for standard AC appliances.

What converts DC to AC power in a solar system?

The solar inverter converts DC to AC power. Depending on the system design, this can be a central string inverter, string inverters with power optimizers, or microinverters mounted on each panel.