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Find Solar panel installers in Holliston

Avatar for Modern Energy

Modern Energy

5.00(
3
)
Approved Pro

Modern Energy

5.00(
3
)
Approved Pro
Customers say: Quick response
387 local quotes requested
9 years of experience

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025

Modern Energy is a top rated Mass Save contractor that specializes in Whole Home Heat Pump installation for both residential and commercial customers. With deep roots in the energy efficiency world, we always make sure to install the most efficient, cost-effective products on the market. Plus - we have in house staff to help our customers handle the rebate and financing process!

"The guys at Modern Energy did an excellent job, Ryan was VERY responsive and got me the best deal possible. These past two summers showed how beneficial this type of system mini-splits are. Highly recommend!"

Michael T on September 2025


Avatar for ReVision Energy

ReVision Energy

4.93(
119
)
Approved Pro

ReVision Energy

4.93(
119
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
18 local quotes requested

A ReVision Energy Company. Since 2009, Sunbug has provided best-in-class renewable energy solutions to a wide range of residential, commercial, and nonprofit customers, as well as expertise in solar for new construction and EPC services. Our helpful, responsive team brings deep expertise, experience, and a customer-first approach to every project. Each of us embraces a method and a mindset that’s equal parts craftsmanship, collaboration, and accountability. As a values-driven B-Corp with employee-owners, and a longtime member of the Amicus Solar Cooperative, we believe in doing the right thing, the right way, every day. Our relationships with clients, partners, and one another are guided by honesty, respect, and integrity, and we are known for standing by our work and by our word.

"They know their stuff! Derek was knowledgable and professional designing the system, and Thien, Ken, Mishael, and Anthony got the work done sharply while Rachel kept on top of coordinating everything. They dealt with our questions responsively and even came back when something didn't look quite right. Definitely a higher cost than we might have gotten elsewhere, but hopefully that was worth it!"

Matt G on October 2023

A ReVision Energy Company. Since 2009, Sunbug has provided best-in-class renewable energy solutions to a wide range of residential, commercial, and nonprofit customers, as well as expertise in solar for new construction and EPC services. Our helpful, responsive team brings deep expertise, experience, and a customer-first approach to every project. Each of us embraces a method and a mindset that’s equal parts craftsmanship, collaboration, and accountability. As a values-driven B-Corp with employee-owners, and a longtime member of the Amicus Solar Cooperative, we believe in doing the right thing, the right way, every day. Our relationships with clients, partners, and one another are guided by honesty, respect, and integrity, and we are known for standing by our work and by our word.

"They know their stuff! Derek was knowledgable and professional designing the system, and Thien, Ken, Mishael, and Anthony got the work done sharply while Rachel kept on top of coordinating everything. They dealt with our questions responsively and even came back when something didn't look quite right. Definitely a higher cost than we might have gotten elsewhere, but hopefully that was worth it!"

Matt G on October 2023


Avatar for Petro Home Services

Petro Home Services

4.12(
146
)

Petro Home Services

4.12(
146
)
Customers say: Super punctual
123 years of experience

We're America’s #1 local home heating oil and total home comfort services provider (heating, cooling, plumbing, & chimney). With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

"Our heater stopped functioning on Nov 27, 2023 and we called Petro who had done the maintenance on it before and replaced a motor two years ago. They were responsive and a technician came two days later. He worked for 3 hours without explaining what the problem was. Then said he needed to replace the motor. He fixed the problem and left without much explanation. Two days later a bill of $2500 came via email. No explanation, no break-down. I called 4 times over the last 20 days, spoke to 4 different reps and was promised that a supervisor will contact me with the bill details. Nothing happened. Irresponsible customer service and unprofessional behavior. They show all the symptoms of big, bureaucratic, and indifferent service company. I would not recommend Petro if you have options of more personalized services."

Nasser R on December 2023

We're America’s #1 local home heating oil and total home comfort services provider (heating, cooling, plumbing, & chimney). With over 100 years experience, we know how to keep you comfortable, safe and help you save on energy costs. Our local 24/7 customer service and support means automatic heating oil deliveries and our service response is always fast. We never run out of heating oil plus our pricing and payment plans are designed to help you manage your costs all year round. Experience the Petro difference today!

"Our heater stopped functioning on Nov 27, 2023 and we called Petro who had done the maintenance on it before and replaced a motor two years ago. They were responsive and a technician came two days later. He worked for 3 hours without explaining what the problem was. Then said he needed to replace the motor. He fixed the problem and left without much explanation. Two days later a bill of $2500 came via email. No explanation, no break-down. I called 4 times over the last 20 days, spoke to 4 different reps and was promised that a supervisor will contact me with the bill details. Nothing happened. Irresponsible customer service and unprofessional behavior. They show all the symptoms of big, bureaucratic, and indifferent service company. I would not recommend Petro if you have options of more personalized services."

Nasser R on December 2023


Avatar for Custom SOlar

Custom SOlar

No reviews yet

Custom SOlar

No reviews yet
13 years of experience

Hello, my name is Bryce. I have worked as a residential solar specialist since 2013! At Custom Solar, I provide my clients free, no obligation virtual consultations to help everyone understand the full benefits of switching to solar energy. That's right, I crunch all of the numbers, calculate the savings and tax benefits, and help you make an educated decision about how to best purchase or finance a solar panel system that is designed for your needs. And I do all of this from phone, email, and Zoom! That way you get the information you seek without a pushy in-home sales rep. Massachusetts is my primary state of focus but my network extends to 33 out of the 50 states! Please reach out soon and I'll get started working for you.

Hello, my name is Bryce. I have worked as a residential solar specialist since 2013! At Custom Solar, I provide my clients free, no obligation virtual consultations to help everyone understand the full benefits of switching to solar energy. That's right, I crunch all of the numbers, calculate the savings and tax benefits, and help you make an educated decision about how to best purchase or finance a solar panel system that is designed for your needs. And I do all of this from phone, email, and Zoom! That way you get the information you seek without a pushy in-home sales rep. Massachusetts is my primary state of focus but my network extends to 33 out of the 50 states! Please reach out soon and I'll get started working for you.


Avatar for Hallmark Home Improvement

Hallmark Home Improvement

No reviews yet

Hallmark Home Improvement

No reviews yet
28 years of experience

Owner David Tomolillo personally oversees all remodeling projects performed by his company. A native to the North Boston area, David brings his passion for quality, strong work ethic and twenty plus years of experience to Hallmark Homes Remodeling. His in-depth product knowledge, craftsmanship and practical approach ensure that his customers are delivered quality, cost effective solutions for their home improvement needs. We have hundreds of satisfied customers to prove it.

Owner David Tomolillo personally oversees all remodeling projects performed by his company. A native to the North Boston area, David brings his passion for quality, strong work ethic and twenty plus years of experience to Hallmark Homes Remodeling. His in-depth product knowledge, craftsmanship and practical approach ensure that his customers are delivered quality, cost effective solutions for their home improvement needs. We have hundreds of satisfied customers to prove it.


Carlton Plumbing & Heating

No reviews yet

Carlton Plumbing & Heating

No reviews yet
25 years of experience

Here at Carlton Plumbing & Heating, we are a 24 hour service! Call to make your appointment today!

Here at Carlton Plumbing & Heating, we are a 24 hour service! Call to make your appointment today!


Avatar for Frank Lamparelli Oil Co Inc

Frank Lamparelli Oil Co Inc

4.83(
64
)

Frank Lamparelli Oil Co Inc

4.83(
64
)
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers

Frank Lamparelli is a full service energy provider. Our staff of 10 certified and licensed technicians allow us the ability to provide "award winning" heating and cooling service repair and installation work 24/7/365. Our fleet of 13 delivery vehicles provide fuel oil, propane diesel fuel and gasoline delivery service, You will always speak with a Frank Lamparelli employee, any time you call. We are here to assist you in all your heating and cooling needs.

"It went very well and I've been quite happy with the Riello burner and Smith boiler. Dealing with Lamparelli is also always a pleasant experience. They do things the right way."

Stefan J on March 2020

Frank Lamparelli is a full service energy provider. Our staff of 10 certified and licensed technicians allow us the ability to provide "award winning" heating and cooling service repair and installation work 24/7/365. Our fleet of 13 delivery vehicles provide fuel oil, propane diesel fuel and gasoline delivery service, You will always speak with a Frank Lamparelli employee, any time you call. We are here to assist you in all your heating and cooling needs.

"It went very well and I've been quite happy with the Riello burner and Smith boiler. Dealing with Lamparelli is also always a pleasant experience. They do things the right way."

Stefan J on March 2020


Littleton Sewer & Drain

No reviews yet

Littleton Sewer & Drain

No reviews yet
19 years of experience

Ready willing and able to help with whatever problem that might arise day or night. Call us today to schedule an appointment. Insured, Certified, Licensed, Professional technicians!!

Ready willing and able to help with whatever problem that might arise day or night. Call us today to schedule an appointment. Insured, Certified, Licensed, Professional technicians!!


Avatar for Future Energy Solar LLC

Future Energy Solar LLC

5.00(
7
)

Future Energy Solar LLC

5.00(
7
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Solar Energy Dealer, Installer, Sales, & Consulting.

"Future Energy Solar gave me exactly what I needed, great pricing on the solar system. Great customer service ,kept me updated and submitted all paperwork right on time. On the day of installation everything was installed symmetrically and professionally. System was turned on within two weeks. It's been 11 months and I have saved close to $2700. Happy Client."

Harlene G on April 2019

Solar Energy Dealer, Installer, Sales, & Consulting.

"Future Energy Solar gave me exactly what I needed, great pricing on the solar system. Great customer service ,kept me updated and submitted all paperwork right on time. On the day of installation everything was installed symmetrically and professionally. System was turned on within two weeks. It's been 11 months and I have saved close to $2700. Happy Client."

Harlene G on April 2019


CARDOSO ELECTRICAL SERVICES

5.00(
1
)

CARDOSO ELECTRICAL SERVICES

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

LICENSE NO: #A18196.

LICENSE NO: #A18196.

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FAQs for solar panel installation projects in Holliston, MA

If you experience frequent power outages, want to become more energy independent, or aim to reduce your reliance on the grid, investing in a solar battery system can be worthwhile. With a solar battery, you'll have backup power day or night, even if the local grid fails. However, to power larger appliances or ensure you have energy for longer periods, you'll need to invest in multiple batteries. While the upfront cost is higher, many homeowners find the added peace of mind to be well worth the investment.

Solar battery storage capacity is measured in kilowatt-hours, which directly indicates the amount of energy the battery can store. This measurement determines how long essential appliances will continue operating during an outage. A clear understanding of capacity helps in planning the overall system size to ensure effective backup power and to maintain optimal performance even as the battery ages.

Determining the correct size for your solar battery system requires evaluating your monthly energy usage. Start by reviewing your utility bills to identify your average consumption, and then match the battery’s kilowatt-hour rating to cover essential loads. Consulting with a solar professional ensures that the system is sized to deliver continuous backup power, meeting both immediate and future energy needs.

A solar battery's lifespan ranges from five to 15 years, and its durability is affected by battery quality, charging frequency, and environmental conditions. Regular maintenance and proper usage are key to maximizing longevity. Monitoring your system, following manufacturer guidelines, and scheduling routine inspections all help ensure that your battery performs reliably throughout its service life.

The Holliston, MA homeowners’ guide to solar panel installations

From average costs to expert advice, get all the answers you need to get your job done.