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The Generac ecogen series 5818- 6kw standby generator for off grid applications (lp) is available for purchase today.

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Generac EcoGen Series 5818- 6kW Standby Generator for Off Grid Applications (LP)

(Based on expert analysis, manufacturer ratings and customer reviews)
4.3 out of 54.3 out of 54.3 out of 54.3 out of 54.3 out of 5
3 Reviews
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  • Features
  • Specs
  • 8
    Q&A 
  • 3
    Reviews
  • Articles
  • Shipping
  • Accessories

Grade
Air Cooled Standby Generators
Style
Watts
6 kW
Rated Watts
Voltage
120V
Single-Phase
Fuel
Engine
OHVI
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The First Generator Intended For Alternative Energy Interaction
Designed to interact w/ off-grid renewable energy applications
Capable of tying into an inverter & battery storage system
MUST BE TIED INTO AN ALTERNATIVE ENERGY SOURCE

Generac OHVI Air-Cooled Engine
Maximizes engine "breathing" for increased fuel efficiency
Plateau honed cylinder walls & plasma-moly rings run cooler

Exclusive Premium Oil Recovery & Circulation System
Provides extended run capability, 500 hours between oil changes

Nexus™ Digital Controller Monitors & Controls All Functions
Provides system status - compatible with Nexus™ wireless monitors

Ultra Quiet, Low RPMs - Only 52 dB(A) Under Normal Load
Vertically mounted, belt-driven engine drives at 2600 RPMs
Longer life & drastically quieter operation than other systems

Weather Protective Steel Enclosure w/ RhinoCoat™ Finish System

Two-Wire Start - Easily Connect To The Inverter Control Wires
Automatically start/stop the generator for battery charging

Factory Wired 120V - Capable of 240V (Conv. Kit Sold Separately)
Accommodate 240V inverter systems or two systems paired

3 Year/2000 Hour Limited Warranty


Model
  Model Number:5818
 UPC:696471058185
 Manufacturer:Generac
 Made in USA:Yes
Engine
 Brand:Generac OHVI
 HP/CC:530 cc
 Consumer Engine Warranty:3 Years
 Commercial Engine Warranty:Not Available
 Engine RPM:2600 RPM
 Low Oil Alert/Shutdown:Yes
Product Specs
 Voltage120 Single-Phase
 Frequency:60 Hertz
 Cooling SystemAir Cooled
 Fuel TypeLP
 LP Power Capacity6,000 Watts
 LP Consumption (50% Load).82 gallons/hr (BTU: 74,415 BTU/HR)
 LP Consumption (100% Load)1.47 gallons/hr (BTU: 133,403 BTU/HR)
 Rated Amps:50 Amps @ 120 Volts (Single Phase)
 Decibel Rating @ 7m:52 db(A)
 EnclosureSteel
 Mounting PadComposite (Included)
 Transfer Switch:Not Applicable
 Battery:Not Included (525 CCA - Battery Group 26R)
Overview
 UL ListedYes
 Weight:387 Lbs. (175.54 kilograms)
 Dimensions:48L x 25W x 29H
(121.92 x 63.50 x 73.66 cm)
 Consumer Warranty:3 Years
 Commercial Warranty:Not Available


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  8 Questions
Q: Hi Jim - question - what is it that is special about the EcoGen generator for off-grid power versus say the Generac Guardian 8kW Standby. The system is about $1500 more expensive - I recognize that a previous answer you provided online said that having solar makes things more complicated, but there must be something unique about this generator that you need to use it for this application? Can I use the 8kW generator to manually turn on and off back-up power or charge my solar system?
by Jeff Brown from New York on April 03, 2014

A: The overall engine design and oil lubrication system is much more robust in the EcoGen (5818) system allowing the long term running when paired with a solar systems inverter which will also start the generator will 2-wire control.

The regular 8kW (6237 & 6245) emergency backup standby generators are designed to work with standard applications where utility service is present as the generators internal controller must be connected to utility power to properly operate.

The generator must also be connected to the appropriate automatic transfer switch for proper communication. The connections and controls are not the basic 2-wire start as there are 6 control wires that must be connected to the automatic transfer switch for proper utility service monitoring and generator controls.

The Generac Guardian Home Standby units are not designed, engineered or warranted for use in a solar system.

by Jim, Product Expert
Q: I have a 9165 watt solar system which reverse meters to the grid. If the power is off, I have no power. Will one of the natural gas backup generators work with my system, or does the solar add complications?

by Erik Johnson from Colorado on December 16, 2013

A: Having multiple power sources can make things very complicated. However, we do offer two models of generators which can be turned on and off by your solar systems inverter system.

Generac's EcoGen model 5818 is specifically designed for use with alternative power options such as solar and wind and comes with a 3 year warranty......

Generac EcoGen Model 5818

Kohler offers their 14kW home standby generator capable for use with solar systems but they only offer an 18 month warranty as they are not specifically designed for this type of application. The generators internal controller can be adjusted to accept a 2 wire start from your inverter system.

Kohler 14kW Model 14RESA

We do recommend consulting with a local installer as your application can have some special parameters and installation requirements. They will also be familiar with your local code requirements so installation is done properly.

by Jim, Product Expert
Q: I purchased a Generac 5818 LP generator from you a couple months ago.
Unfortunately the instruction manual is well hidden or went missing before I got it. How do I go about receiving the installation and operation manual?

by Carl Wright Wright from Arizona on October 18, 2013

A: The best way to get access to new manuals is through the Generac website using the serial number from the generator.

Here is the link to access the manuals.....

Generac Manual Search

by Jim, Product Expert
Q: just bought the eco generator today and need a cold start/warm kit for battery etc.. but seeing an exact fit for what I have ??? is there one???
by Chris from Connecticut on October 21, 2011

A: Unfortunately, there is not a cold weather kit for the Eco-Gen at this time.
by Jim, Product Expert
Q: What is a composite pad ?
by CHARLES BLYTHE from North Carolina on April 08, 2011

A: The composite pad is a strong, lightweight mounting pad provided to simplify the installation. By including the pad with the generator, installation time and cost is reduced since a concrete base is no longer a requirement.
by Jim, Product Expert
Q: Is this wireless monitor compatible with the Generac CorePower series ?
by Tim from New York on March 01, 2011

A: The Generac Nexus™ Advanced Wireless Monitor is only compatible with the Guardian and EcoGen Series models with the internal Nexus™ Controller and cannot be connected to the CorePower model.
by Jim, Product Expert
Q: Hello Jim, do you have, or can you recommend stand-by generator installers for the Houston, Texas area? We are in the N.W. Houston area.
by David Reece from Texas on February 13, 2011

A: Since we do not get involved in the installation process and since we ship all over the continental US we do not have a list of installers to provide. You can contact a local Generac dealer who may do installations at a reasonable price and will provide you with the best installation knowledge. You do not necessarily have to purchase a Generac generator from them to utilize their installation and they would be your resource for maintenance and warranty repairs.

Service Dealers

by Jim, Product Expert
Q: Is this generator (Model 5884) a good choice for off grid solar system backup. 14kw not essential circuit?
by Avery Edwards from Colorado on January 25, 2011

A: The Generac 5884 generator is specifically designed for emergency backup only and will not be warranted in an off-the-grid application.

Generac did come out with a new model specifically designed for off-the-grid and solar applications.

Off Grid Generator

by Jim, Product Expert
Generac 5818 Reviews & Ratings
Write Review
Overall Rating
Features
5/5
Quality
4/5
Performance
5/5
Value
4/5
Overall
4.3 out of 54.3 out of 54.3 out of 54.3 out of 54.3 out of 5
Pros
Quiet (2)
Features (1)
High Quality (1)
Reliable (1)
Durable (1)
Cons
Expensive (1)
Low Quality (1)
50% of respondents would recommend this product to a friend
3 Reviews  Sort by 
 
Robert B.
Groveland, NY
Purchased from Electric Generators Direct
Purchased 2/18/14
Most Helpful Positive Review
REVIEWED
APR.
08
2014
5 out of 55 out of 55 out of 55 out of 55 out of 5
Eco-gen #2
Off grid living is sometimes more expensive than I'd like to admit. I have just purchased my 2nd Eco-gen after #1's inverter seized. I'm not complaining, as it had nearly 5,000 hours on it and the motor section is still fine. It's a trickle down sorta thing. My battery bank had problems which resulted in extra gen use. That has been taken care of and now I will replace the inverter portion of #1 and keep it as backup to my backup. Exellent product here that never skipped a beat with basic... more
Pros: Quiet, Durable, Reliable, High Quality
Robert Recommends This Generac Product
Was this review helpful?
20
Brian E.
Austin, TX
Purchased from Electric Generators Direct
Purchased 5/29/13
Total Helpful Votes
11 Helpful Votes
Most Helpful Critical Review
REVIEWED
SEP.
16
2013
3 out of 53 out of 53 out of 53 out of 53 out of 5
Generac: Slow And Unreliable
Unit I received from Electric Generators Direct seized in the first 5 minutes of operation. Took me 3 months to get replacement and scavenger pump did not work for the additional reservoir. This caused the engine to overfill with oil and smoke badly. Still waiting on a resolution with that. It runs good but only with the engine sump and not the extra large reservoir filled with oil.
Pros: Features, Quiet
Cons: Low Quality, Expensive
Brian Does Not Recommend This Product
Was this review helpful?
113
Mitchell
Purchased from Electric Generators Direct
Purchased 4/2/13
Total Helpful Votes
18 Helpful Votes
REVIEWED
APR.
24
2013
5 out of 55 out of 55 out of 55 out of 55 out of 5
Oh So Quiet
I was a little nervous with the spec for how quiet the generator was supposed to be, as i was planning on installing it into a renewable energy system at a cabin in the woods. Last thing i wanted to do was to drown out the silence of the woods with a noisy generator. I couldn't believe how quiet it was. I have a little portable 1000W suitcase unit and this is even quieter than that! I can't wait to get the cabin done and install this for real and see how well it does out there. VERY... more
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181
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Shop for the Generac EcoGen Series 5818- 6kW Standby Generator for Off Grid Applications (LP) at Electric Generators Direct. Research Generac 696471058185 standby air-cooled generators online. Find Generac 5818 standby air-cooled generators & generac ecogen 6kw generator features and specifications. Get the best deal; compare Generac 5818 prices now. Buy the 5818 direct and save.