Generators

Research features, view pricing information, and decide on which standby generator from Generac, Kohler, Cummins, or Briggs & Stratton meets your needs!

27kW Protector QS Model RG027

Repairs & Maintenance

Our knowledgeable staff stocks all necessary parts and tools, keeping us available to perform both scheduled routine maintenance and 24/7 emergency services as needed!

PowerPact 7kW Model 6561

Warranty

Investments deserve protection. We offer manufacturer extended warranties with five (5), seven (7), and ten (10) year options. Protect your investment today!

Get a FREE, no obligation, quote today!

Are you interested in knowing how much a backup generator for your home would cost? Do you need to know the price of a standby generator for your business? To request a quote on a new generator for your residential or commercial property please click the button and fill out the form, or give us a call at 281-259-6500! Our sales and service staff are available Monday – Friday from 8am – 4:30pm to answer your questions, address concerns, and make sure you are 100% satisfied.

Request A Quote Now!

Reliable, Uninterrupted Electricity

Life without power is more than just an inconvenience; it can be dangerous and costly. From depending on your computer to complete projects to saving the huge supply of food in your freezer, our standby generators can ensure you have the power you need to keep your home or business functional. Imagine being in the middle of a power outage and still being able to use your electrical appliances, including the stove, washing machine, air conditioner, and microwave. Don’t let life without power become a major inconvenience for your household or business when you can have backup power when you need it the most.

Let the team at our generator dealership help you protect your home and business from power outages with our high-performance automatic generators that are designed to quickly restore your electricity as soon as utility power is interrupted. We carry a variety of brand-name units that are designed to meet you electrical needs, including natural gas, propane, and diesel generators. If you are not sure what type of generator you need, our friendly and knowledgeable technicians will consult with you and help you figure out the best solution for your situation.

Angie's List, Super Service Award 2016 Recipient

All of our automatic standby generators and transfer switches provide reliable protection for severe weather conditions and unpredictable power outages. Don’t ever worry about getting through the day without power when you work with our team. We even perform free inspections of your property and perform a load test to determine the ideal generator unit for your property.

THE BEST Standby Generators on the Market

The Grasten Power Technologies team is trained on, and experienced with, dozens of models of automatic standby generators from several brands, but these three are our top performing manufacturers. Generac, Kohler, and Cummins make the best residential and commercial backup generators, and Grasten is here to sell, install, and service them in and around Houston.

What Our Customers are Saying About Us:

I needed some parts and the lady who helped me went to great lengths to find my parts and order them.

James Jacobs, 03/04/2017
2017-05-02T23:11:03+00:00
I needed some parts and the lady who helped me went to great lengths to find my parts and order them. James Jacobs, 03/04/2017

Putting in a whole home generator is a big project Grasten took care of all of it.

Kenneth Burks, 02/09/2017
2017-05-02T23:30:17+00:00
Putting in a whole home generator is a big project Grasten took care of all of it. Kenneth Burks, 02/09/2017

Wonderful response and very qualified company.

~ Candy Carmichael, 01/20/2017
2017-05-04T17:55:37+00:00
Wonderful response and very qualified company. ~ Candy Carmichael, 01/20/2017

Provides you with good service.

~ Danniella Lazar, 01/20/2017
2017-05-04T18:02:34+00:00
Provides you with good service. ~ Danniella Lazar, 01/20/2017

Install a year and a half ago went without a hitch. Grasten obtained all permits and was present for each phase. Their technician, Jordan, was on time, professional and answered questions I had without hesitation. We haven't had any problems, but based on what Grasten has done so far, I don't doubt they would stand by the product (General Whole House Generator).

~ Rick Pattison, 04/08/2017
2017-05-02T22:54:04+00:00
Install a year and a half ago went without a hitch. Grasten obtained all permits and was present for each phase. Their technician, Jordan, was on time, professional and answered questions I had without hesitation. We haven't had any problems, but based on what Grasten has done so far, I don't doubt they would stand by the product (General Whole House Generator). ~ Rick Pattison, 04/08/2017

The team at Grasten are professional, friendly and helpful. They are there every step of the way from the beginning to the end. I would recommend them for all your alternate power needs!

~ Charles Johnson, 01/23/2017
2017-05-04T18:38:31+00:00
The team at Grasten are professional, friendly and helpful. They are there every step of the way from the beginning to the end. I would recommend them for all your alternate power needs! ~ Charles Johnson, 01/23/2017

Very easy to deal with. The few times there was an issue it was resolved quickly. I plan to use Grafton for a long time, and have recommended them to many friends.

Judy Snedegar, 02/09/2017
2017-05-02T23:26:20+00:00
Very easy to deal with. The few times there was an issue it was resolved quickly. I plan to use Grafton for a long time, and have recommended them to many friends. Judy Snedegar, 02/09/2017

They have a good, solid product, prompt service, and employees extremely knowledgeable.

Michael Clutter, 2/09/2017
2017-05-02T23:21:22+00:00
They have a good, solid product, prompt service, and employees extremely knowledgeable. Michael Clutter, 2/09/2017

Awesome service.

~ Brian Musgrove, 01/20/2017
2017-05-04T18:10:16+00:00
Awesome service. ~ Brian Musgrove, 01/20/2017

Your technicians and customer service are punctual and efficient.

~ David Ritter, 01/20/2017
2017-05-04T18:21:36+00:00
Your technicians and customer service are punctual and efficient. ~ David Ritter, 01/20/2017

Great service after the sale.

~ Jairus Construction, 03/16/2017
2017-05-02T22:59:49+00:00
Great service after the sale. ~ Jairus Construction, 03/16/2017

They do what they promise. Caring, personable staff. They seem to really care about the customer.

~ Bo Anderson, 01/24/2017
2017-05-04T18:40:08+00:00
They do what they promise. Caring, personable staff. They seem to really care about the customer. ~ Bo Anderson, 01/24/2017

It is a total installation contractor. Outstanding quality and prompt.

Jeffery Ashwood, 02/09/2017
2017-05-02T23:18:16+00:00
It is a total installation contractor. Outstanding quality and prompt. Jeffery Ashwood, 02/09/2017

Grasten provided a comprehensive PM inspection on my backup generator. It was easy to schedule an appointment, technician called ahead and arrived in time for appointment, inspection and maintenance activities were performed in a quality manner.

Louis Koolman, 02/19/2017
2017-05-02T23:13:14+00:00
Grasten provided a comprehensive PM inspection on my backup generator. It was easy to schedule an appointment, technician called ahead and arrived in time for appointment, inspection and maintenance activities were performed in a quality manner. Louis Koolman, 02/19/2017

Good quality services and products.

~ Jimmy Dotson, 02/09/2017
2017-05-02T23:27:31+00:00
Good quality services and products. ~ Jimmy Dotson, 02/09/2017

We call - you install - hassle free. It is that simple (to a customer). Thanks for the good service.

~ Mark Daigle, 03/17/2017
2017-05-02T22:58:59+00:00
We call - you install - hassle free. It is that simple (to a customer). Thanks for the good service. ~ Mark Daigle, 03/17/2017

Great service.

~ Bruce Stoltzfus, 01/20/2017
2017-05-04T17:53:05+00:00
Great service. ~ Bruce Stoltzfus, 01/20/2017

Great service, value and people. They were competitive and did exactly what they said they were going to do on the schedule they said.

~ Lomax Electric, 03/29/2017
2017-05-02T22:55:39+00:00
Great service, value and people. They were competitive and did exactly what they said they were going to do on the schedule they said. ~ Lomax Electric, 03/29/2017

Grasten has always provided great service. The tech is on time and does the needed work in a professional and timely manner. Jordan was my tech the last two times.

Clive Shepard, 02/15/2017
2017-05-02T23:15:04+00:00
Grasten has always provided great service. The tech is on time and does the needed work in a professional and timely manner. Jordan was my tech the last two times. Clive Shepard, 02/15/2017

I like their yearly contract option for service. This really helps us not to forget to get our generator serviced regularly. I also like the fact that when they say they are showing up they indeed show up. I also like the fact that their folks are always friendly, helpful and efficient.

~ Chris Cottrell, 01/21/2017
2017-05-04T18:32:49+00:00
I like their yearly contract option for service. This really helps us not to forget to get our generator serviced regularly. I also like the fact that when they say they are showing up they indeed show up. I also like the fact that their folks are always friendly, helpful and efficient. ~ Chris Cottrell, 01/21/2017

Josh and the Grasten Power team installed my generator and have provided excellent service and maintenance for several years now! I have no hesitation in recommending them to anyone looking for back up power.

~ Gerald Kavalieratos, 01/27/2017
2017-05-04T18:43:40+00:00
Josh and the Grasten Power team installed my generator and have provided excellent service and maintenance for several years now! I have no hesitation in recommending them to anyone looking for back up power. ~ Gerald Kavalieratos, 01/27/2017

...they stand behind their product - the installation was excellent. The product adds peace of mind and we have "enjoyed" power outages now for several years.

~ Dennis Spradley, 04/20/2017
2017-05-02T22:51:47+00:00
...they stand behind their product - the installation was excellent. The product adds peace of mind and we have "enjoyed" power outages now for several years. ~ Dennis Spradley, 04/20/2017

They are quick and do it right the 1st time.

Jane Frenchik, 02/09/2017
2017-05-02T23:16:57+00:00
They are quick and do it right the 1st time. Jane Frenchik, 02/09/2017

Easy to deal with and awesome service.

~ Brent Wilks,  01/20/2017
2017-05-04T18:15:38+00:00
Easy to deal with and awesome service. ~ Brent Wilks,  01/20/2017

Professional, does a excellent job, and stands behind their product.

~ Charles Cox, 01/20/2017
2017-05-04T18:28:26+00:00
Professional, does a excellent job, and stands behind their product. ~ Charles Cox, 01/20/2017

I would strongly recommend Grasten

I contacted Grasten in early July 2012 for the purpose of obtaining a bid for a whole house generator. They were extremely responsive and arrived on schedule. The estimator was extremely knowledgable. He determined my electrical needs based on the size of my electrical panels, number of A/Cs and other electrical appliances in our home. He determined that a Geneac 20kw generator and related Nexus Smart Switches (transfer switches) were capable of providing "whole" house electrical service in the event of a power outage. Power outages seem to happen often in my area. He provided a written estimate of the complete "turn-key" cost of the generator and related smart switches including installation and natural gas meter upgrade. After getting bids from several competitors, I chose Grasten based on their professionalism, knowledge and responsiveness.

The generator and related switches were promptly delivered on July 18. The generator was installed on a cement pad leveled etc in preparation for electrical and plumbing work. On July 23, the licensed electrician tested the amperage draw of my home under full load to insure that the generator and Smart Switches were adequate. He reconfirmed that the 20kw generator would be sufficient and began the installation of the Smart Switches etc. This consisted of connecting them to generator and various home electrical panels. Concurrently, the licensed plumbers ran a gas line from my natural gas meter and connected it to the generator. On July 26, Centerpoint upgraded my gas meter and regulator and connect it to the dedicated generator gas line. The next day a technician arrived to perform start-up including amperage, and load testing of the generator and switch etc. All went well. He then did some owner training. He parting words were "Call me if you have any questions or problems". In summary, the entire process went extremely well. While it may seem simple, it was only simple because of experienced and knowledgeable people. I would strongly recommend Grasten.
~ Leo C., Montgomery,TX
Date: 8/15/2012
2015-11-10T09:01:24+00:00
I contacted Grasten in early July 2012 for the purpose of obtaining a bid for a whole house generator. They were extremely responsive and arrived on schedule. The estimator was extremely knowledgable. He determined my electrical needs based on the size of my electrical panels, number of A/Cs and other electrical appliances in our home. He determined that a Geneac 20kw generator and related Nexus Smart Switches (transfer switches) were capable of providing "whole" house electrical service in the event of a power outage. Power outages seem to happen often in my area. He provided a written estimate of the complete "turn-key" cost of the generator and related smart switches including installation and natural gas meter upgrade. After getting bids from several competitors, I chose Grasten based on their professionalism, knowledge and responsiveness. The generator and related switches were promptly delivered on July 18. The generator was installed on a cement pad leveled etc in preparation for electrical and plumbing work. On July 23, the licensed electrician tested the amperage draw of my home under full load to insure that the generator and Smart Switches were adequate. He reconfirmed that the 20kw generator would be sufficient and began the installation of the Smart Switches etc. This consisted of connecting them to generator and various home electrical panels. Concurrently, the licensed plumbers ran a gas line from my natural gas meter and connected it to the generator. On July 26, Centerpoint upgraded my gas meter and regulator and connect it to the dedicated generator gas line. The next day a technician arrived to perform start-up including amperage, and load testing of the generator and switch etc. All went well. He then did some owner training. He parting words were "Call me if you have any questions or problems". In summary, the...

Amazing Experience

Grasten Generators went above and beyond my expectations. The sales person was more informative than any other that I came across during my search. He explained every part to the generator and how the installation would go. Their team was prompt, courteous, and clean. The installation looks great. I would highly recommend Grasten to anyone purchasing a generator.
~ Johny, The Woodlands, TX
Age:55-64
Date:10/26/2011
2015-11-10T09:06:46+00:00
Grasten Generators went above and beyond my expectations. The sales person was more informative than any other that I came across during my search. He explained every part to the generator and how the installation would go. Their team was prompt, courteous, and clean. The installation looks great. I would highly recommend Grasten to anyone purchasing a generator. ~ Johny, The Woodlands, TX Age:55-64 Date:10/26/2011

All around great experience

After Ike we decided to invest in a whole house generator. Did quite a bit of research and very much liked what we heard from Grasten. They had the best price and their installation was first class and completed promptly. They made sure that all codes and regulations were correctly followed. We also use them for our annual service and everything has been done as Generac recommends and done on time. Very happy with Grasten.
~ HappyOnLakeConroe, Montgomery,TX
Age: 55-64
Date: 2/28/2012
2015-11-10T09:02:15+00:00
After Ike we decided to invest in a whole house generator. Did quite a bit of research and very much liked what we heard from Grasten. They had the best price and their installation was first class and completed promptly. They made sure that all codes and regulations were correctly followed. We also use them for our annual service and everything has been done as Generac recommends and done on time. Very happy with Grasten. ~ HappyOnLakeConroe, Montgomery,TX Age: 55-64 Date: 2/28/2012

Great service, even on the weekend!!

~ Barry Puls, 01/20/2017
2017-05-04T18:11:52+00:00
Great service, even on the weekend!! ~ Barry Puls, 01/20/2017

They were very easy to deal with. They did what they were supposed to when they said they would. Very honest people, I felt comfortable with everyone I dealt with.

~ Debra Vassar, 01/27/2017
2017-05-04T18:42:03+00:00
They were very easy to deal with. They did what they were supposed to when they said they would. Very honest people, I felt comfortable with everyone I dealt with. ~ Debra Vassar, 01/27/2017

Excellent response time. Friendly. Much better service than competitors. Great pricing.

~ Chris Magnuson, 01/20/2017
2017-05-04T18:25:54+00:00
Excellent response time. Friendly. Much better service than competitors. Great pricing. ~ Chris Magnuson, 01/20/2017

I would highly recommend Grasten. Pricing is competitive, service is great, customer service and outside service personnel are competent, "Texas courteous" and efficient. Very happy after two+ years with a water cooled Generac emergency generator.

~ Bob Kramek, 03/28/2017
2017-05-02T22:58:05+00:00
I would highly recommend Grasten. Pricing is competitive, service is great, customer service and outside service personnel are competent, "Texas courteous" and efficient. Very happy after two+ years with a water cooled Generac emergency generator. ~ Bob Kramek, 03/28/2017
Free Quote