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Generac 7034 EcoGen 15kW Air-Cooled Standby Generator for Off-Grid Applications

Whether the off-grid lifestyle is a choice or a necessity, you are responsible for producing the energy you consume – even when there’s no sun or wind. Ensure you never have dead batteries with the Generac EcoGen–the only automatic standby generator designed and warrantied specifically for off-grid use with an alternative energy system.


Spec Sheet-Domestic

SKU: 7034

Availability: In stock


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  • G-Flex Technology - Unlike competitive units that run at a constant speed, patented G-Flex technology allows the Generac Synergy to run at lower speeds when household electrical demand is light. That means significantly quieter operation at normal capacity, less fuel consumption when you need less electricity, and cleaner power than competitive air-cooled home standby generators
  • Extended Run Capability: This innovative oil circulation system extends the maintenance intervals by an unprecedented 5 times the industry standard by offering 500 hour maintenance intervals
  • 3 Year 2000 Hour Limited Warranty
  • Generac generators and engines are engineered and built in the USA using domestic and foreign parts
  • Generac's G-Force Engine is a purpose-built, pressure-lubricated engine capable of handling the rigors of generator use, resulting in power that’s more reliable and requires less routine maintenance than any competitive engine
  • 24/7•365 Customer Support Team standing by all day, every day from Generac's headquarters in Wisconsin to answer any questions you might have
  • Quiet-Test Self-Test Mode runs at a lower RPM for a five or twelve minute test, making generators significantly quieter than other brands while consuming less fuel
  • Tough, Durable All-Aluminum Enclosures: The RhinoCoat™ powder-coated finish helps make corrosion-resistant aluminum perfect for all weather conditions
  • Smart, User-Friendly Controls. Generac’s Evolution™ Controller features a multilingual LCD display that allows users to monitor battery status and track maintenance intervals to ensure your generator is always in top operating condition

Compliance and Restrictions.

Warning: Cancer and Birth Defect/Reproductive Harm -- www.P65Warnings.ca.gov/product



Rated Max. Continuous Power Capacity (LP) 15,000 Watts
Rated Max. Continuous Power Capacity (NG) 15,000 Watts
Rated Voltage 240V
Rated Max. Continuous Load Current - 240 Volts 62.5
Total Harmonic Distortion Less Than 2%
Main Line Circuit Breaker 70 Amp
Phase 1
Number of Rotor Poles 2
Rated AC Frequency 60 Hz
Power Factor 1.0
Battery Requirement (Not Included) 12 Volts, Group 26R 540 CCA Min. or Group 35AGM 650 CCA Min.
Unit Weight (lb./kg.) 526 / 239
Dimensions (L x W x H) 48" x 25" x 29"
Sound Output in dB(A) @ 23' - Normal Load 63 dB(A)
Type of Engine Generac OHVI V-Twin
Number of Cylinders 2
Displacement 999 cc
Cylinder Block Aluminum with Cast Iron Sleeve
Valve Arrangement Overhead Valve
Ignition System Soild-State with Magneto
Governor System Electronic
Compression Ratio 9.5:1
Starter 12 Vdc
Oil Capacity Approx. 3.75 qt / 3.55 L
Operating RPM 2,700 - 3,600 RPM
Fuel Consumption (NG) 1/2 Load: 150 ft3/hr / Full Load: 302 ft3/hr
Fuel Consumption (LP) 1/2 Load: 1.48 GPH / Full Load 2.86 GPH
2-Line Plain Text Multilingual LCD Display Simple User Interface for Ease of Operation
Mode Buttons Auto / Manual / Off
Ready to Run / Maintenance Messages Standard
Engine Run Hours Indication Standard
Programmable Start Delay Between 2 - 1500 Seconds Standard (Programmable by Dealer Only)
Utility Voltage Loss / Return to Utility Adjustable From 140-171 V/190-216 V
Future Set Capable Exerciser Standard
Run / Alarm / Maintenance Logs 50 Events Each
Engine Start Sequence Cyclic Cranking
Starter Lock-Out Starter Cannot Re-Engage Until 5 Seconds After Engine Stops
Smart Battery Charger Standard
Charger Fault / Missing AC Warning Standard
Low Battery / Battery Problem Indication Standard
Auto. Voltage Regulationwith Over and Under Voltage Protection      Standard
Under-Frequency / Overload / Stepper Overcurrent Protection Standard
Safety Fused / Fuse Problem Protection Standard
Auto. Low Oil Pressure / High Oil Temp. Shutdown Standard
Overcrank / Overspeed @ 72 Hz. Standard
High Engine Temperature Shutdown Standard
Internal Fault / Incorrect Wiring Protection Standard
Common External Fault Capability Standard
Field Upgradable Firmware Standard

More Info


Product Information PDFs
Spec List Product Specs
Spec List Product Brochure
Spec List Warranty Statement
Spec List Owners Manual


  • Generac OHVI Design: Maximizes engine "breathing" for increased fuel efficiency. Plateau honed cylinder walls and plasma moly rings help the engine run cooler, reducing oil consumption resulting in longer engine life
  • "Spiny-Lok" Cast Iron Cylinder Walls: Rigid construction and added druability provide long engine life
  • Electronic Ignition / Spark Advance: These features combine to ensure smooth and quick starting, every time
  • Oil Circulatory System: Extends maintenance intervals to 500 hours and virtually eliminates oil degradation
  • Full Pressure Lubrication System: Pressurized lubrication to all vital bearings means better performance, less maintenance, and longer engine life - Now featuring up to a 2 year / 200 hour oil change interval
  • Low Oil Pressure Shutdown System: Shutdown protection prevents catastrophic engine damage due to low oil level
  • High Temperature Shutdown: Prevents damage due to overheating
  • Optimized Muffler and Resonator: Results in dramatically quieter operation during normal loads than constant speed systems


  • Cylindrically Wound Rotor: Allows for multi-phase excitation, enabling variable engine RPM resulting in fuel savings and sound reduction
  • Skewed Stator: Produces a smooth output waveform for compatibility with electronic equipment
  • Variable Speed / Constant Frequency AVR: Provides uncommonly clean power with less than 2% total harmonic distortion
  • Automatic Voltage Regulation: Regulates the output voltage to +/- 1% - prevents damaging voltage spikes
  • UL 2200 Listed: Ensures user safety

Evolution Controls

  • Auto / Manual / Off Illuminated Buttons: Selects the operating mode and provides easy, at-a-glance status indication
  • Sealed / Raised Buttons: Smooth, weather-resistant user interface for programming and operations
  • 2-Wire Start Interconnection: Allows the generator to be started by a two wire signal
  • Smart Battery Charger: Delivers charge to the battery only when needed at varying rates depending on outdoor air temperature - compatible with lead acid and AGM-style batteries
  • Main Line Circuit Breaker: Protects generator from overload
  • Electronic Governor: Maintains constant 60 Hz frequency


  • SAE Weather Protective Enclosure: Sound attenuated enclosures ensure queit operation and protection against nature, withstanding wind up to 150 mph. Hinged key locking roof panel for security. Lift-out front for easy access to all routine maintenance items. Electrostatically applies textured epoxy paint for added durability
  • Enclosed Critical Grade Muffler: Quiet, critical grade muffler is mounted inside the unit to prevent injuries
  • Small, Compact, and Attractive: Makes for an easy, eye-appealing installation. Can be installed at close as 18" away from a building

Installation System

  • 1 Ft. Flexible Fuel Line Connector: Absorbs any generator vibration when connected to rigid pipe
  • Direct-to-Dirt Composite Mounting Pad: Lattice design prevents settling or sinking of the generator system - No need for concrete base
  • Integral Sediment Trap: Prevents particles and moisture from entering the fuel regulator and engine, prolonging engine life 



  • G-Flex Variable Speed Technology
  • Two Line LCD Multilingual Digital Evolution Controller (English / Spanish / French / Portuguese)
  • Electronic Governor
  • System Status and Maintenance Interval LED Indicators
  • Sound Attenuated Enclosure
  • Flexible Fuel Line Connector
  • Direct-to-Dirt Composite Pad
  • Protective Base Fascia
  • 3 Year, 2000 Hour Limited Warranty


Still going strongReview by BigSal
I have a generac 15 KW that has been running my home for a week after the latest tropical storm and if you ask me there is no better recommendation than that. I LOVE my generator
(Posted on 4/14/2015)
Excellent performance for just over 6 day during hurricane timeReview by RGR
My system functioned flawlessly with continuous operation for just over 6 days. It was only stopped every other day to check/top off the oil. It operated all of the essential systems identified below. This is a quality produce that I have been recommending to everyone all week. It is 'no muss; no fuss' and well worth the investment especially for women who are single head of household. Thank you!
(Posted on 12/8/2014)
Great GeneratorReview by Chemtrain
"It ran continuously for five days and more than meet our needs for electrical service during the time. It's an enormous and positive step above a portable for home service."
(Posted on 11/12/2014)

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