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Avatar for Santiago Electric, Inc.

Santiago Electric, Inc.

4.86(
21
)
Approved Pro

Santiago Electric, Inc.

4.86(
21
)
Approved Pro
Customers say: Quick response
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
5 years of experience

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! Book with us online or feel free to give us a call today!

"I had them put in a Tesla charging outlet and replace some fluorescent lights in my kitchen. They gave me a fair quote and did a good. When their guys were running late to the time they said they would arrive they called me and gave me a new arrival time. Professional company with great customer service. I worked with Hector, he is very good. I recommend them."

Ramiro C on April 2023

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! Book with us online or feel free to give us a call today!

"I had them put in a Tesla charging outlet and replace some fluorescent lights in my kitchen. They gave me a fair quote and did a good. When their guys were running late to the time they said they would arrive they called me and gave me a new arrival time. Professional company with great customer service. I worked with Hector, he is very good. I recommend them."

Ramiro C on April 2023


Avatar for Prosper Construction Development, Inc.

Prosper Construction Development, Inc.

4.88(
38
)
Approved Pro

Prosper Construction Development, Inc.

4.88(
38
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
13 years of experience

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


Pinnacle Energy Solutions-Unlicensed Contractor

5.00(
1
)
Approved Pro

Pinnacle Energy Solutions-Unlicensed Contractor

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
9 years of experience

Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!

"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"

Greg N on August 2021

Pinnacle Energy Solutions has become a staple of professionalism and quality work in San Ramon for years. With decades of experience, there is no job too large or small. Call today to schedule an appointment!

"The thing I appreciate with Steven is, there is no sales pitch! He paired us with best options we have and he always gets back and answers any questions we have to me! Just great!"

Greg N on August 2021


Avatar for NRG Clean Power

NRG Clean Power

4.58(
43
)

NRG Clean Power

4.58(
43
)
Customers say: Terrific value
26 years of experience

NRG Clean Power is California’s leading clean power provider. We leverage over 30 years of superior customer service installing solar from the south of San Diego to the northern border with Oregon. In other words, regardless of where you are in California, we can help you make the switch to solar! Not only do we offer top-tier solar services, we are also a total home performance company, devoted to sustainability and energy efficiency. We offer fully customized home and business solar installations with battery backup capabilities. We do not service solar systems that we did not install. We believe the future is clean, renewable energy and with your help we are committed to creating it together. Customer satisfaction is a crucial aspect and the cornerstone of our business. As a result, we have earned the prestigious Diamond Certification 4 years in a row, along with the 2019 Angie’s List Super Service Award. NRG Clean Power offers the finest solar products at the best rates with finance options for everyone. We will be with you every step of the way and for years to come. Check out our promos to take advantage of our best deals. And ask about our Referral Program that allows customers like you to earn cash bonuses for referring friends and family!

"No doubt they hire great installation people, but their communication and honoring their quotes has little to be desired. I will elaborate. I was given a quote, left on my voicemail. I responded the next day letting NRG know I accepted their quote. 1 week later I received a phone call telling me they wouldn't honor the quote give, and they cited the reasons as Tarif's. This was back in April 2025. I still went with NRG, albeit at a$1000.00 increase. The second reason I wouldn't recommend this company, and this for me is the final straw, after installing my solar NRG didn't let me know I needed to have an ESR release, in layman's terms this is necessary for your power company to accept your new solar system. I found out this information when they contacted me in August 2025. NEG blamed the company who upgraded my Electrical Panel. NRG INSTALLED MY SOLAR AFTER THE PANEL WAS UPGRADED. Since this company doesn't communicate with its clients I would say go with another company."

Daniel S on August 2025

NRG Clean Power is California’s leading clean power provider. We leverage over 30 years of superior customer service installing solar from the south of San Diego to the northern border with Oregon. In other words, regardless of where you are in California, we can help you make the switch to solar! Not only do we offer top-tier solar services, we are also a total home performance company, devoted to sustainability and energy efficiency. We offer fully customized home and business solar installations with battery backup capabilities. We do not service solar systems that we did not install. We believe the future is clean, renewable energy and with your help we are committed to creating it together. Customer satisfaction is a crucial aspect and the cornerstone of our business. As a result, we have earned the prestigious Diamond Certification 4 years in a row, along with the 2019 Angie’s List Super Service Award. NRG Clean Power offers the finest solar products at the best rates with finance options for everyone. We will be with you every step of the way and for years to come. Check out our promos to take advantage of our best deals. And ask about our Referral Program that allows customers like you to earn cash bonuses for referring friends and family!

"No doubt they hire great installation people, but their communication and honoring their quotes has little to be desired. I will elaborate. I was given a quote, left on my voicemail. I responded the next day letting NRG know I accepted their quote. 1 week later I received a phone call telling me they wouldn't honor the quote give, and they cited the reasons as Tarif's. This was back in April 2025. I still went with NRG, albeit at a$1000.00 increase. The second reason I wouldn't recommend this company, and this for me is the final straw, after installing my solar NRG didn't let me know I needed to have an ESR release, in layman's terms this is necessary for your power company to accept your new solar system. I found out this information when they contacted me in August 2025. NEG blamed the company who upgraded my Electrical Panel. NRG INSTALLED MY SOLAR AFTER THE PANEL WAS UPGRADED. Since this company doesn't communicate with its clients I would say go with another company."

Daniel S on August 2025


Mid-State Solar

5.00(
9
)

Mid-State Solar

5.00(
9
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Mid-State Solar was established in 1977 and has specialized in solar energy since its founding. Under the same family ownership, we’ve provided innovative solutions for solar thermal and solar electric (PV) applications to thousands of satisfied customers for over thirty-five years. Styles and products may have changed through the decades, but one thing remains the same – our dedication to those we serve. Whether large or small, we strive for excellence on every job and work closely with you to create a solar energy system uniquely designed for your setting and goals.

"Very smoothly. This is the company to go with."

Larry H on November 2018

Mid-State Solar was established in 1977 and has specialized in solar energy since its founding. Under the same family ownership, we’ve provided innovative solutions for solar thermal and solar electric (PV) applications to thousands of satisfied customers for over thirty-five years. Styles and products may have changed through the decades, but one thing remains the same – our dedication to those we serve. Whether large or small, we strive for excellence on every job and work closely with you to create a solar energy system uniquely designed for your setting and goals.

"Very smoothly. This is the company to go with."

Larry H on November 2018


Avatar for SunPower by The Solar Quote

SunPower by The Solar Quote

5.00(
6
)

SunPower by The Solar Quote

5.00(
6
)
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

SunPower by The Solar Quote is a leader in high-quality energy services. We currently service Northern CA, we make clean energy affordable to homeowners at a lower cost than they pay for energy generated by burning fossil fuels like coal. We provide the highest quality panels at the lowest possible price. Our approach is to install the highest efficiency solar panels and combine them with top-rated local installers at the lowest possible cost to homeowners. We are making the switch to solar simple for our customers while keeping local high-quality installers busy. We've revolutionized the way homeowners use energy by giving customers a cleaner, more affordable alternative to their monthly utility bill.

"SERVICES PROVIDED WAS EXCEPTIONAL. THE SALES AGENT, DEANN YOUNG WAS EXCEPTIONALLY KNOWLEDGEABLE AND TOOK TIME TO EXPLAIN THE WHOLE PROCESS . THE PANELS LOOK GREAT ON MY ROOF, THE INSTALLATION WAS NEATLY DONE AND COMPLETED IN ONE DAY. MOSTLY IMPORTANTLY, DEANN YOUNG WAS ALWAYS AVAILABLE WHENEVER I HAD QUESTIONS. I WOULD RECOMMEND SUNPOWER BY THE SOLAR QUOTE ANYTIME ANYDAY. FIDELIS OGWU"

FIDELIS O on December 2020

SunPower by The Solar Quote is a leader in high-quality energy services. We currently service Northern CA, we make clean energy affordable to homeowners at a lower cost than they pay for energy generated by burning fossil fuels like coal. We provide the highest quality panels at the lowest possible price. Our approach is to install the highest efficiency solar panels and combine them with top-rated local installers at the lowest possible cost to homeowners. We are making the switch to solar simple for our customers while keeping local high-quality installers busy. We've revolutionized the way homeowners use energy by giving customers a cleaner, more affordable alternative to their monthly utility bill.

"SERVICES PROVIDED WAS EXCEPTIONAL. THE SALES AGENT, DEANN YOUNG WAS EXCEPTIONALLY KNOWLEDGEABLE AND TOOK TIME TO EXPLAIN THE WHOLE PROCESS . THE PANELS LOOK GREAT ON MY ROOF, THE INSTALLATION WAS NEATLY DONE AND COMPLETED IN ONE DAY. MOSTLY IMPORTANTLY, DEANN YOUNG WAS ALWAYS AVAILABLE WHENEVER I HAD QUESTIONS. I WOULD RECOMMEND SUNPOWER BY THE SOLAR QUOTE ANYTIME ANYDAY. FIDELIS OGWU"

FIDELIS O on December 2020


Avatar for C & M Air Conditioning

C & M Air Conditioning

4.88(
8
)

C & M Air Conditioning

4.88(
8
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Ask Marian, co-owner about a discount appropriate to you specific service repair need. Accept cash, check, Master Card, Visa & financing upon approval. 15% Discount on all parts for accounts, for business who become accounts.

"It was fine. They are very nice, very responsive and did a great job."

Cindy M on April 2019

Ask Marian, co-owner about a discount appropriate to you specific service repair need. Accept cash, check, Master Card, Visa & financing upon approval. 15% Discount on all parts for accounts, for business who become accounts.

"It was fine. They are very nice, very responsive and did a great job."

Cindy M on April 2019


J H Simpson Heating & Air Conditioning

5.00(
4
)

J H Simpson Heating & Air Conditioning

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Since 1944 J. H. Simpson Company Inc has been providing excellence in service and installation work for residential, commercial, industrial and government projects. From customized shop fabrication to designing and engineering, J. H. Simpson Company Inc has the knowledge to solve even the most difficult problems. J. H. Simpson Company Inc offers the best in equipment, personnel, service and safety... Plus a reputation of integrity and dependability that insures your complete satisfaction.

Since 1944 J. H. Simpson Company Inc has been providing excellence in service and installation work for residential, commercial, industrial and government projects. From customized shop fabrication to designing and engineering, J. H. Simpson Company Inc has the knowledge to solve even the most difficult problems. J. H. Simpson Company Inc offers the best in equipment, personnel, service and safety... Plus a reputation of integrity and dependability that insures your complete satisfaction.


Avatar for ACDC ELECTRICAL CONTRACTOR  INC

ACDC ELECTRICAL CONTRACTOR INC

4.38(
8
)

ACDC ELECTRICAL CONTRACTOR INC

4.38(
8
)
Customers say: Super punctual
42 years of experience

AcDc Energizes your world! Ac/Dc Electrical Contractors Inc, (Owner: John Muller) holds an Electrical license according to the California license board. An Electrical Contractor servicing Commercial & Residential indoor and outdoor. Specializing in Troubleshooting and problem solving. Servicing trouble calls and installation for electrical outlets and GFI outlets. Electrical Service Panel installation, Change, and renovations. Install, design, and upgrade, recessed lighting, chandeliers, ceiling fan, EV chargers, smoke alarms, and security lighting. Spa wiring, new construction wiring, remodels, and more. 40 years in the business in the heart of 209, and awarded, once again the best of Tracy 2023. Call for a free estimate today. Serving the San Joaquin, Stanislaus, Merced, Sacramento, Tri Valley, and Central Valley areas. There is not job to small and no place to far. Call for a free estimate (209) 832-1212, Email: [email protected], https://acdcelectricalcontractors.carrd.co/

AcDc Energizes your world! Ac/Dc Electrical Contractors Inc, (Owner: John Muller) holds an Electrical license according to the California license board. An Electrical Contractor servicing Commercial & Residential indoor and outdoor. Specializing in Troubleshooting and problem solving. Servicing trouble calls and installation for electrical outlets and GFI outlets. Electrical Service Panel installation, Change, and renovations. Install, design, and upgrade, recessed lighting, chandeliers, ceiling fan, EV chargers, smoke alarms, and security lighting. Spa wiring, new construction wiring, remodels, and more. 40 years in the business in the heart of 209, and awarded, once again the best of Tracy 2023. Call for a free estimate today. Serving the San Joaquin, Stanislaus, Merced, Sacramento, Tri Valley, and Central Valley areas. There is not job to small and no place to far. Call for a free estimate (209) 832-1212, Email: [email protected], https://acdcelectricalcontractors.carrd.co/


Green Home Solutions

5.00(
1
)

Green Home Solutions

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Green Home Solutions, A Grupe Company is a BPI accredited Home Performance Contractor. We specialize in Home Energy Assessments and retrofits, everything from insulation to solar electric! Visit our website and discover the world of energy efficiency. "Pay for the energy you use, not the energy you lose"

Green Home Solutions, A Grupe Company is a BPI accredited Home Performance Contractor. We specialize in Home Energy Assessments and retrofits, everything from insulation to solar electric! Visit our website and discover the world of energy efficiency. "Pay for the energy you use, not the energy you lose"

Showing 1-10 of 35
Energy Efficiency Auditing questions, answered by experts

Insulation is measured by R-value, which is the measure of a material's ability to resist heat transfer. The higher the number, the better the insulation. When installing insulation yourself, you need to determine the optimal R-value you need to keep your home warm in the wintertime, cool in the heat of summer, and energy-efficient all year long. Each inch of insulation provides between a 3 and an 8 R-value. The climate where you live plays a major role in what R-value you need and the price tag you might see in your insulation installation.

Yes, these services often increase home value by preventing moisture-related issues and enhancing the usable space in basements or crawlspaces.

Gas fireplaces use either natural gas or propane—both of which will increase your energy expenses. On average, running a gas fireplace costs $400 to $640 per year; however, these costs can vary significantly depending on the fuel price in your area and the frequency of fireplace use. If you’re looking for a more energy-efficient option, consider switching to an electric fireplace.

If you have central air conditioning, it’s fine to run your AC all day if that’s what you want—as long as the AC unit is in good condition. But if your AC runs constantly when you don’t want it to, there may be a problem with your system (like the ones we’ve mentioned above). Window AC units and wall air conditioners aren’t as powerful as central AC, so you should only run those kinds of air conditioners for eight to 12 hours at a time.

There is no blanket figure for a residential home’s electrical load, since load varies by the size of the home, how many appliances are used, and the efficiency of their electrical systems. Typically, however, it’s safe to assume 40 to 60 amps is the average electrical load of a residential home. 

The Salida, CA homeowners’ guide to energy efficiency auditing services

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