*The Angi rating for Generator Installation companies in Colma, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
*The HomeAdvisor rating for Generator Installation companies in Colma, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Installation needs.
Last update on May 22, 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
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
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
We specialize in all aspects of residential and commercial electrical construction/maintenance. We believe deeply in effective communication, safety and quality craftsmanship. If you choose us, the job will get done right the first time and there will never be a doubt in your mind of why you picked us in the first place. We look forward to working with you.
"Perfect. Quick and very professional."
Joan H on October 2024
We specialize in all aspects of residential and commercial electrical construction/maintenance. We believe deeply in effective communication, safety and quality craftsmanship. If you choose us, the job will get done right the first time and there will never be a doubt in your mind of why you picked us in the first place. We look forward to working with you.
"Perfect. Quick and very professional."
Joan H on October 2024
We have the experience and dedication to get the job done right! Specializing in Electrical services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today! DISCOUNTS FOR SENIORS, MILITARY, AND PEOPLE WITH DISABILITIES
"I had a few issues with outlets not working which was an urgent issue because it was in my work area. I contacted Voltage Electrical Services LLC, and they were very understanding, timely, professional and respectful. They promptly came out diagnosed the issue. They communicated every step of the way to inform me of what they were doing and what the issue was and how they were going to fix it. There were parts needed and which they had to pick up but returned very quickly. The issue was resolved and I am a very Happy customer! I also had some squeaky doors that needed attention and they also helped me with that. I would recommend them to family and anyone who has electrical issues or needs handy men work. The customer service was amazing! Highly recommend them!! I will be call them first for any electrical or handyman work. Thank you Voltage Electrical Services LLC!"
Patrina R on October 2024
We have the experience and dedication to get the job done right! Specializing in Electrical services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today! DISCOUNTS FOR SENIORS, MILITARY, AND PEOPLE WITH DISABILITIES
"I had a few issues with outlets not working which was an urgent issue because it was in my work area. I contacted Voltage Electrical Services LLC, and they were very understanding, timely, professional and respectful. They promptly came out diagnosed the issue. They communicated every step of the way to inform me of what they were doing and what the issue was and how they were going to fix it. There were parts needed and which they had to pick up but returned very quickly. The issue was resolved and I am a very Happy customer! I also had some squeaky doors that needed attention and they also helped me with that. I would recommend them to family and anyone who has electrical issues or needs handy men work. The customer service was amazing! Highly recommend them!! I will be call them first for any electrical or handyman work. Thank you Voltage Electrical Services LLC!"
Patrina R on October 2024
With over 15 years of experience in Electrical and Solar Energy GreenWorld Electric Solutions LLC. has operated with strong values aimed at understanding and serving client needs. To us, every new project means a new relationship. The information we learn from this open communication model allows us to deliver excellent results. Get in touch today, and discover the advantage of working with us.
"Great Jesse did a great job in a timely fashion and kept us informed at every step. Very happy with the results."
buddy w on October 2024
With over 15 years of experience in Electrical and Solar Energy GreenWorld Electric Solutions LLC. has operated with strong values aimed at understanding and serving client needs. To us, every new project means a new relationship. The information we learn from this open communication model allows us to deliver excellent results. Get in touch today, and discover the advantage of working with us.
"Great Jesse did a great job in a timely fashion and kept us informed at every step. Very happy with the results."
buddy w on October 2024
We have the experience and dedication to get the job done right! Specializing in Electrical services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your estimate today!
"As a Facility Coordinator for Corporate William-Sonoma, Marcos was our primary electrician. Sure, we would get quotes from other contractors but in the end, we preferred, and trusted, his service over the other big-name contractors. He's a local provider who operates with integrity and honesty. He wants your return business and does a very clean job and leaves no surprises. As I've worked in different property management & building management companies over the years, Marcos has been our primary contractor for many jobs. Large and small. He also has a good connection with other good folks in the crafts to complete larger scale remodels and tenant improvements."
Amanda J on November 2024
We have the experience and dedication to get the job done right! Specializing in Electrical services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your estimate today!
"As a Facility Coordinator for Corporate William-Sonoma, Marcos was our primary electrician. Sure, we would get quotes from other contractors but in the end, we preferred, and trusted, his service over the other big-name contractors. He's a local provider who operates with integrity and honesty. He wants your return business and does a very clean job and leaves no surprises. As I've worked in different property management & building management companies over the years, Marcos has been our primary contractor for many jobs. Large and small. He also has a good connection with other good folks in the crafts to complete larger scale remodels and tenant improvements."
Amanda J on November 2024
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!
Welcome to 415 Electric Incorporated! We always provide high quality work that produces an exceptional product. We pride ourselves on the relationships we build with all of our clients, and we cannot wait to hear from you. Call today!
"My electrician forever! They are reliable and did the service faster and better than I expected. They exceeded my expectations!"
Kate . on September 2018
Welcome to 415 Electric Incorporated! We always provide high quality work that produces an exceptional product. We pride ourselves on the relationships we build with all of our clients, and we cannot wait to hear from you. Call today!
"My electrician forever! They are reliable and did the service faster and better than I expected. They exceeded my expectations!"
Kate . on September 2018
Here Emanuel Morales Electric, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!
"I did not actually hire; Emanuel. Here is what happened. He called me to see what my issue was. I explained it to him, having to do with GFCI outlets and breakers I was not able to reset. He said, do you want to hop on FaceTime and show me the electrical panel? I said YES! So in the span of 8 patient minutes, he led me through how to flip the breakers fully, and safely, and then talked me through resetting my GFCI outlets underneath my kitchen sink. All while on FaceTime. I told him I wanted to pay him for his time and expertise (and laidback kindness) -- he said, nah, no problem, just call next time I have an electrical issue. I 100% will and have already sent his name along to my friend network. Thanks, Emanuel."
Serena C on December 2024
Here Emanuel Morales Electric, we pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!
"I did not actually hire; Emanuel. Here is what happened. He called me to see what my issue was. I explained it to him, having to do with GFCI outlets and breakers I was not able to reset. He said, do you want to hop on FaceTime and show me the electrical panel? I said YES! So in the span of 8 patient minutes, he led me through how to flip the breakers fully, and safely, and then talked me through resetting my GFCI outlets underneath my kitchen sink. All while on FaceTime. I told him I wanted to pay him for his time and expertise (and laidback kindness) -- he said, nah, no problem, just call next time I have an electrical issue. I 100% will and have already sent his name along to my friend network. Thanks, Emanuel."
Serena C on December 2024
We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a locally owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!
"I served as a State-licensed inspector for the City and County of San Francisco for 23 years, overseeing electrical work on multi-million dollar projects throughout the city. During that time, I had the opportunity to inspect Carlos' work on numerous occasions. His installations were always meticulous--completed per plan and strictly up to code. It was clear then, as it is now, that Carlos takes great pride in his work and genuinely enjoys what he does. That passion is evident in the quality of his craftsmanship. Since retiring from the city, I've taken on a major remodel of my home. When I learned that Carlos had started his own business, I didn't even consider anyone else for the job. He handled all the electrical work for my project, including 100% new wiring and trim out of electrical outlets, and lighting. He upgraded the main service to 200 amps, installed three subpanels, and set up two EV charging stations--I highly recommend Shadow Electric!"
Christina P on May 2025
We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a locally owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!
"I served as a State-licensed inspector for the City and County of San Francisco for 23 years, overseeing electrical work on multi-million dollar projects throughout the city. During that time, I had the opportunity to inspect Carlos' work on numerous occasions. His installations were always meticulous--completed per plan and strictly up to code. It was clear then, as it is now, that Carlos takes great pride in his work and genuinely enjoys what he does. That passion is evident in the quality of his craftsmanship. Since retiring from the city, I've taken on a major remodel of my home. When I learned that Carlos had started his own business, I didn't even consider anyone else for the job. He handled all the electrical work for my project, including 100% new wiring and trim out of electrical outlets, and lighting. He upgraded the main service to 200 amps, installed three subpanels, and set up two EV charging stations--I highly recommend Shadow Electric!"
Christina P on May 2025
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