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A large, white Generac Protector Series backup generator with vented panels, a display panel on the left side, and a black base, shown against a plain white background.

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Generac Standby Generator, 15kW | Diesel | 1800rpm

SKU: RD01525
Model: RD01525

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What to Expect

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Whether you're preparing your home or protecting your business, our expert-recommended generators offer trusted backup when you need it most.

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All the conveniences of modern living – heat, central air, refrigeration, communication – are nothing without power. When the power supply is disrupted, our lives and businesses can come to a sudden halt. An automatic standby generator protects you from power failures, restoring power within seconds of an outage, so you can have peace of mind and the power you need.

Generac’s new Protector® Series diesel generators raise the bar for residential and light commercial diesel generators. Building and zoning codes can vary wildly from one region to another. In the past, the only answer was to order expensive, custom-configured solutions. Until now.

Generac’s diesel-powered Protector Series features Code Ready, a set of popular preconfigured options and a range of code-driven accessories, so you can feel confident that your generator will be able to conform to the required local codes. The Protector Series is versatile, adaptable, meets UL requirements, and is an affordable optional standby diesel generator for your backup power needs.

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Additional information

Weight 1528 lbs
Dimensions 81 × 31 × 51 in
Fuel Type

Diesel
Wattage

15 kW (running)
Voltage

120/240 V Single-Phase
Noise Level (dB)

65-70 dB
Monitoring Capabilities

Mobile Link™ Wi‑Fi
Enclosure Material

Steel
Certifications

UL 2200 / UL142 / ULC S601 Listed
Brand

Generac

Evolution™ Controller
The next generation of intuitive controllers featuring a multilingual, two-line LCD text display with color-coded, backlit buttons.

Quiet-Test™ mode
All standby generators run a weekly test to ensure the system is running properly. Thanks to Quiet-Test, your Protector Series standby generator runs its self-test at a lower, quieter RPM than standard operation.

Mobile Link™ Connectivity
Mobile Link™ Connectivity allows you to monitor the status of your generator from anywhere in the world using a smartphone, tablet or PC. Easily access information, such as the current operating status and the generator’s maintenance schedule. Connect your account to an authorized service dealer for fast, friendly and convenient assistance. With Mobile Link, your generator is taken care of before the next outage.
Mobile Link™ comes standard with Protector Series 22 – 100 kW gaseous models and diesel (RD) models. The Wi-Fi device is standard on every Protector series generator except for the RG13090/RG15090 and the 130 – 150 kW gaseous models.

5 Year Limited Warranty
We are proud of our innovative product design, high quality and first-class reliability so we stand behind them with a strong 5-year limited warranty.

Code Ready
The Protector Series offers compatibility with a variety of environments, with external vent and fill, a UL/CUL 142-listed, double-walled base tank, a UL/CUL 2200-listed generator, and a wide range of code-driven accessories.

Additional Features

Ease of installation and service: External viewing window for easy inspection of generator status and breaker position / Removable doors for easy service and fuel fill access

Isochronous Governor – electronic governor control for tight and precise load response and voltage (+/- 1%) and frequency regulation

Available in single- and three-phase configurations

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