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Generator installers in Alviso

Avatar for Dalcon Electric
Dalcon Electric
757 Chestnut St
4.56(
399
)
Approved Pro
Dalcon Electric
757 Chestnut St
4.56(
399
)
Approved Pro
Super Service Award
Customers say: Quality work
609 local quotes requested
32 years of experience

We are an Electrical Contracting Company providing top quality electrical services to South Bay, East Bay, and the Peninsula! David Lee, the owner of Dalcon Electric, started doing electrical work in the San Jose area over 30 years ago. Then, in 1993, he started Dalcon Electric in San Jose. With over 30 years of experience in both residential and commercial work, we take pride in our expertise and professionalism. We always give you a fair price and can often recommend ways to save you money on your electrical job. We are family owned and operated company! We are also licensed, bonded, and insured! Give us a call today! You’ll be in good hands! Ask about our Angie's List coupon and senior discounts. Award winning. Certified Copalum Installers. SPAN Certified Installers.

"Stood me up on the estimate appointment. They're not a one-man operation by any stretch of the imagination so there is absolutely no excuse for not calling a customer when you know you need to reschedule."

Nathan D on May 2025

We are an Electrical Contracting Company providing top quality electrical services to South Bay, East Bay, and the Peninsula! David Lee, the owner of Dalcon Electric, started doing electrical work in the San Jose area over 30 years ago. Then, in 1993, he started Dalcon Electric in San Jose. With over 30 years of experience in both residential and commercial work, we take pride in our expertise and professionalism. We always give you a fair price and can often recommend ways to save you money on your electrical job. We are family owned and operated company! We are also licensed, bonded, and insured! Give us a call today! You’ll be in good hands! Ask about our Angie's List coupon and senior discounts. Award winning. Certified Copalum Installers. SPAN Certified Installers.

"Stood me up on the estimate appointment. They're not a one-man operation by any stretch of the imagination so there is absolutely no excuse for not calling a customer when you know you need to reschedule."

Nathan D on May 2025


Avatar for Los Gatos Electric, Inc.
Los Gatos Electric, Inc.
15559 Union Ave
3.67(
6
)
Approved Pro
Los Gatos Electric, Inc.
15559 Union Ave
3.67(
6
)
Approved Pro
63 local quotes requested
14 years of experience

General building and electrical contractors, residential and commercial. New construction, remodels, commercial build-outs. http://www.losgatos-electric.com All major credit cards accepted.

"Problems with wiring of outlets, switches and light fixtures werre diagnosed and repaired safely."

lester g on January 2024

General building and electrical contractors, residential and commercial. New construction, remodels, commercial build-outs. http://www.losgatos-electric.com All major credit cards accepted.

"Problems with wiring of outlets, switches and light fixtures werre diagnosed and repaired safely."

lester g on January 2024


Avatar for Service Champions Heating & Air Conditioning
Service Champions Heating & Air Conditioning
4430 Yankee Hill Rd
4.64(
653
)
Approved Pro
Service Champions Heating & Air Conditioning
4430 Yankee Hill Rd
4.64(
653
)
Approved Pro
Super Service Award
Customers say: Super punctual
463 local quotes requested
22 years of experience

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Service was good and timely."

Gerald W on April 2025

Service Champions is the leading heating and air conditioning contractor in Northern California servicing homeowners in East Bay, South Bay and Sacramento areas. We can make your home more comfortable and improve the quality of air you and your family breathe. We specialize in maintenance, repair and sales of all brands of air conditioners and heaters, and are experts in indoor air quality improvement through filtration, duct replacement, insulation and hospital grade UV lights. All the air conditioners we install have the new environmentally friendly refrigerant that does not damage the ozone. We also are huge proponents of super high efficient equipment, such as 95% efficient furnaces. This equipment saves homeowners a tremendous amount of money on their utility bills.

"Service was good and timely."

Gerald W on April 2025


Avatar for Dollens Electric Corp
Dollens Electric Corp
PO Box 730577
4.59(
69
)
Approved Pro
Dollens Electric Corp
PO Box 730577
4.59(
69
)
Approved Pro
Customers say: Quality work
101 local quotes requested
20 years of experience

(408) 929-6100 Dollens Electric is a family owned and operated business. Our electricians specialize in panel upgrades, whole house rewiring, whole house fans, photovoltaic solar systems, lighting design, recessed lighting, retrofit, remodel and additions, electric vehicle charging stations, and electrical troubleshooting. Founded in 2005 we are a multifaceted provider of contracting services to San Jose and South Bay Area . During the past years we have added several services products to our offerings. We are now a significant provider of solar power systems to the foothill region of central California in Calaveras and Amador counties.

"Knew the issue. Very friendly. Repaired efficiently at a reasonable price."

Pat W on July 2024

(408) 929-6100 Dollens Electric is a family owned and operated business. Our electricians specialize in panel upgrades, whole house rewiring, whole house fans, photovoltaic solar systems, lighting design, recessed lighting, retrofit, remodel and additions, electric vehicle charging stations, and electrical troubleshooting. Founded in 2005 we are a multifaceted provider of contracting services to San Jose and South Bay Area . During the past years we have added several services products to our offerings. We are now a significant provider of solar power systems to the foothill region of central California in Calaveras and Amador counties.

"Knew the issue. Very friendly. Repaired efficiently at a reasonable price."

Pat W on July 2024


Avatar for HOERZ ELECTRIC
HOERZ ELECTRIC
39885 WYATT LN
5.00(
5
)
Approved Pro
HOERZ ELECTRIC
39885 WYATT LN
5.00(
5
)
Approved Pro
Customers say: Quality work
11 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"You can't go wrong with Hoerz Electric. We recently had them do electrical work in our kitchen remodel. And let me just say, WOW! Chris and Mike were thorough, honest, and did a great job. We are very happy with the work they did, and can't recommend them enough!"

Andrew L on December 2024

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"You can't go wrong with Hoerz Electric. We recently had them do electrical work in our kitchen remodel. And let me just say, WOW! Chris and Mike were thorough, honest, and did a great job. We are very happy with the work they did, and can't recommend them enough!"

Andrew L on December 2024


Avatar for Green Leaf Solar & Electric, Inc.
Green Leaf Solar & Electric, Inc.
677 North 12th Street
4.00(
1
)
Approved Pro
Green Leaf Solar & Electric, Inc.
677 North 12th Street
4.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
48 years of experience

Here at Green Leaf Solar & Electric, Inc., we sustain our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects. We are experts in our trade and will always keep you educated on your particular task or project.

"No thanks"

Kien T on September 2020

Here at Green Leaf Solar & Electric, Inc., we sustain our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects. We are experts in our trade and will always keep you educated on your particular task or project.

"No thanks"

Kien T on September 2020


Avatar for S Stoner Electric, Inc.
S Stoner Electric, Inc.
387 West Moraga Street
5.00(
2
)
Approved Pro
S Stoner Electric, Inc.
387 West Moraga Street
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

S Stoner Electric, Inc., is one of the Bay Area's premiere commercial electrical contractors. We are a family owned and operated business, with several decades worth of experience in the industry. We specialize in an array of expertise for all your custom commercial electrical. Regardless of the size and scope of your project, we will employ our unique skill set to see your project through from start to finish. We will treat your property with the same degree of care and consideration that we utilize when working on our own personal projects. We will take your initial concept and see it to fruition as a finished work of art worthy of royalty. Many of our past and current customers even consider us masters within our trade. Feel free to contact us to schedule an initial consultation, as we are more than happy to meet with you and discuss your project today!

"Scott who is owner of S. Stoner Electric is absolutely conscientious about his work. He spent the time to research the existing system and design the best solution for the work. We appreciate his dedication and customer service. His team took care of your needs and more. All were extremely cool in our house and worked well together. Scott is an army veteran and we love to support veterans. We completely trusted Scott and his team and the results are still shining bright a year later."

Eric and Cheri W on August 2019

S Stoner Electric, Inc., is one of the Bay Area's premiere commercial electrical contractors. We are a family owned and operated business, with several decades worth of experience in the industry. We specialize in an array of expertise for all your custom commercial electrical. Regardless of the size and scope of your project, we will employ our unique skill set to see your project through from start to finish. We will treat your property with the same degree of care and consideration that we utilize when working on our own personal projects. We will take your initial concept and see it to fruition as a finished work of art worthy of royalty. Many of our past and current customers even consider us masters within our trade. Feel free to contact us to schedule an initial consultation, as we are more than happy to meet with you and discuss your project today!

"Scott who is owner of S. Stoner Electric is absolutely conscientious about his work. He spent the time to research the existing system and design the best solution for the work. We appreciate his dedication and customer service. His team took care of your needs and more. All were extremely cool in our house and worked well together. Scott is an army veteran and we love to support veterans. We completely trusted Scott and his team and the results are still shining bright a year later."

Eric and Cheri W on August 2019


Avatar for Dalcon, Inc.
Dalcon, Inc.
757 Chestnut Street, Suite B
4.77(
75
)
Approved Pro
Dalcon, Inc.
757 Chestnut Street, Suite B
4.77(
75
)
Approved Pro
Customers say: True professional
43 local quotes requested
46 years of experience

Finding a licensed electrician that you can trust to service or repair your property can be difficult. While some electricians offer free consultations or other specials, they often do not have the skills or expertise necessary to efficiently perform the service you need. At Dalcon, Inc., we have over 30 years of combined experience providing high-quality electrical services for our neighbors in San Jose and the surrounding areas and are definitely able to take care of any issue you run into big, or small!

"Carlos F. was very professional and courteous. He was able to fix my electrical issue promptly & kudos to Dalcon, Inc for providing same day service. Great work & customer service. Would definitely recommend!"

Brian O on November 2024

Finding a licensed electrician that you can trust to service or repair your property can be difficult. While some electricians offer free consultations or other specials, they often do not have the skills or expertise necessary to efficiently perform the service you need. At Dalcon, Inc., we have over 30 years of combined experience providing high-quality electrical services for our neighbors in San Jose and the surrounding areas and are definitely able to take care of any issue you run into big, or small!

"Carlos F. was very professional and courteous. He was able to fix my electrical issue promptly & kudos to Dalcon, Inc for providing same day service. Great work & customer service. Would definitely recommend!"

Brian O on November 2024


Avatar for Prosper Construction Development, Inc.
Prosper Construction Development, Inc.
180 Steuart St., Box 194631
4.88(
38
)
Approved Pro
Prosper Construction Development, Inc.
180 Steuart St., Box 194631
4.88(
38
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
238 local quotes requested

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships, and guarantee your satisfaction!

"Fast response and clear communication throughout the process."

Marco T on April 2025


Home Pro Remodeling & Construction, Inc.
134 South Myrtle Avenue
4.43(
27
)
Approved Pro
Home Pro Remodeling & Construction, Inc.
134 South Myrtle Avenue
4.43(
27
)
Approved Pro
Customers say: Quality work
245 local quotes requested
6 years of experience

With years of experience serving the area, we are your solution for all your remodeling needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!

"Great company! They delivered as they promised. Professional work from start to finish. You can tell the difference between old and new windows. Our house looks like new with this windows. Thank you for excellent work."

Nishma P on May 2023

With years of experience serving the area, we are your solution for all your remodeling needs. We take great pride in our extreme professionalism, timeliness and superior customer service on every job. We make sure to develop a lasting relationship so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers! Call us today so we can discuss your needs and make a plan that fits your budget. Satisfaction guaranteed!

"Great company! They delivered as they promised. Professional work from start to finish. You can tell the difference between old and new windows. Our house looks like new with this windows. Thank you for excellent work."

Nishma P on May 2023

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Generator installations FAQs

Installing a whole-house generator costs about $5,000 on average. Prices range from $1,550 to $8,500, depending on size, brand, fuel type, and assembly. The size of your whole-house generator is the most significant cost factor, with large homes with high energy demands costing the most to power. Types of whole-home generators include:

  • Portable generators with 1kW–7.5kW capacity: $500–$2,000

  • Partial generators with 9kW–20kW capacity: $2,000–$6,300

  • Whole-house generators with 22kW–48kW: $5,000–$18,000

When maintained properly, a whole-house generator can last up to 20 years. Costs to maintain and repair generators vary by location and type of generator, but you can expect to pay about $150 to $300 per year for annual generator maintenance checks. An experienced generator service technician will inspect your generator’s engine filter, starting mechanism, fuel, lubrication, and coolant levels to keep your generator in good working condition for as long as possible.

When choosing the right size generator for your needs, consider a few items to help calculate the wattage you’ll need. Start by determining which household items and appliances you want to power, and then add the wattages together. Check out the wattage of these essential appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 watts

Running home appliances like these requires a partial or whole-house generator. A portable generator may be enough to power your home if you only plan to keep a refrigerator and freezer running. 

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

The value of installing a whole-house generator is that your home has guaranteed power, even if the power grid in your area is down. Whether a whole-house generator is worth installing in your home depends on how often you use it, your home’s location, and your lifestyle. For example, installing a whole-house generator is likely worth it if you:

  • Experience frequent or prolonged power outages

  • Work from home

  • Store a lot of cold food

  • Have a sump pump

  • Have a pump for well water

  • Use electronic medical devices

  • Live in a climate requiring heating or cooling

The homeowners guide to generator installations
From average costs to expert advice, get all the answers you need to get your job done.
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