Leave your solar panel installation work in Kamakura City, Kanagawa Prefecture to Kakeru Koumuten Co., Ltd.!

For solar panel and battery installation in
Kamakura City, Kanagawa Prefecture,
Kakeru Koumuten is your trusted choice!

Kakeru Koumuten is a company specializing in exterior renovations based in Kanagawa Prefecture.
In our main office located in Yokohama, we handle numerous exterior renovation projects,
and we are also entrusted with the installation of solar panels and batteries!
Here, we would like to introduce “Reasons why Kakeru Koumuten is chosen for solar panel installations”.

“How to Choose a Solar Panel Contractor in Kamakura City”
“Costs for Solar Panel and Battery Installation”
“Subsidies Available for Solar System Installation in Kamakura City”
We will also explain the above three points!

The installation of solar panels carries risks, such as “the occurrence of leaks” and other troubles.
To ensure a satisfactory solar panel installation, it is essential to obtain estimates from at least three companies!

For customers considering solar panel installation in Kamakura City,
this information will surely be helpful, so please take a look!

Reasons Why Kakeru Koumuten is Chosen for Solar Panel Installations in Kamakura City

One reason why we are entrusted with solar panel installations by customers in Kamakura City is that
“we have a base within Kanagawa Prefecture,” but
“our unique strengths in solar panel installation that cannot be replicated by other companies”
have also received high praise from many customers.

Because we are confident, we welcome estimates from as many companies as possible!

1. We also handle exterior renovations other than solar panel installation!

 
Most troubles such as leaks that occur during solar panel installation are due to the lack of knowledge of the solar panel installation contractors.
While specialized contractors for solar panel installation have knowledge about solar panels, the reality is that many lack knowledge regarding the roof and waterproofing at the installation site.
For peace of mind and to avoid maintenance issues and troubles after construction, it is safer to have expertise in roofing!

Kakeru Koumuten Co., Ltd. is strong in roofing work and can also detach and attach solar panels in-house, allowing us to respond quickly to maintenance and urgent troubles after solar panel installation!

2. Specialized equipment for exterior renovations

Kakeru Koumuten Co., Ltd. has prepared the following warehouses and material storage areas to provide solar work and exterior renovations at low cost and high quality.
We have established five bases centered around Yokohama City, Kanagawa Prefecture for material storage and showrooms.

In-house ownership of scaffolding materials

We own the scaffolding materials necessary for the installation of solar panels, allowing us to assemble the scaffolding in-house.
By conducting the scaffolding work with our own scaffolding team instead of outsourcing, we can also reduce the costs associated with scaffolding work.
We have scaffolding materials for approximately 50 single-family homes!

Storage of materials in our large in-house warehouse

 
We store roofing materials and paints, and we can also store removed solar panels.
By ordering a large quantity of materials at once, you can purchase materials at a lower cost!
Additionally, we always have a stock of roofing materials, allowing us to respond quickly in emergencies!

In-house sorting and transportation of waste materials

The installation of solar panels often involves roofing work, generating various types of waste materials such as paint, wood, and metal.
While most contractors dispose of these materials all together, significant cost savings on waste disposal can be achieved by sorting and recycling the waste materials.

Exterior Renovation Dedicated Showroom

In our showroom, not only can you have meetings, but you can also
check the actual foundation brackets for solar panels and see how they are attached to the roofing materials!
We can also provide simulations for the potential earnings and installation costs if you decide to introduce solar panels!

Since roofing and exterior wall work often accompany each other, we have samples of roofing materials and models that explain the structure, allowing us to provide detailed explanations!

3．Complete In-House Construction

One of Kakeru Koumuten’s major strengths is our complete in-house construction.

From inquiry to project completion, everything is handled by Kakeru Koumuten Co., Ltd. This allows us to keep costs down while providing high-quality roof renovations.
Additionally, one representative will assist you from the estimate to the completion of the work.
Since the same person will handle everything, including sales and construction management, smooth communication is ensured.

We can provide consistent in-house construction from temporary scaffolding setup to exterior wall painting and roof renovations!

4. Various Permits Obtained & Skilled Workers on Staff

We have obtained construction industry permits and permits for industrial waste collection and transportation!
We also have nationally certified sheet metal workers and painting specialists on staff, giving us confidence in our construction techniques.
We are capable of handling large-scale roofing projects, such as those for factories!

5. Warranty and Aftercare

In addition to the manufacturer’s warranty for solar panel installation, we also provide our own rain leak warranty!
Aftercare is available annually, and we send out notification DM each year.
If you have any questions about the warranty, please click on the image above!

Maintenance of Solar Power Generation｜Thorough Explanation of Importance, Frequency, and Cost Estimates!When introducing solar power generation, it is essential to consider...

6. Flexible and Prompt Response

Our company is equipped to handle various roofing troubles and situations.

If you cannot access the roof at high altitudes, we can utilize a drone to assist!
During rain leak investigations, we can also conduct surveys using a thermal imaging camera.

If the power generation of the solar panels decreases due to dirt or other factors, we can provide cleaning with a specialized brush.
We will respond according to your preferences.

7. Human Resource Development

To enhance our skills, we create various roof models and conduct practical training.
Since the construction methods vary depending on the shape and slope of the roof, we regularly provide technical training to ensure that all staff can handle various cases.

Corporate Profile神奈川で家の外装・屋根の工事、修理なら一番若くて親切な株式会社翔工務店にお任せください。 株式会社翔工務店はリフォームを通して美しく理想の生活空間を創るお手伝いをしています。外装改修、外壁塗装、雨樋修理清掃、屋根の塗装や重ね葺き葺き変えなどの部分的な修理まで、お客様のどのようなご要望にも全力でお応えします。...

Potential Subsidies and Grants in Kamakura City, Kanagawa Prefecture

National Subsidy: “Support Project for the Introduction of Storage Battery Systems in Housing”

The government is implementing the “Support Project for the Introduction of Storage Battery Systems in Housing” to assist with the installation of storage batteries.

This subsidy provides 30,000 yen per kWh (with a maximum limit of 600,000 yen) for those who install residential storage batteries that meet certain conditions.

Additionally, this program is part of the government’s efforts to promote zero carbon emissions and renewable energy, allowing for further advancement of “self-consumption” of electricity when used in conjunction with solar power generation.

For detailed eligibility requirements and application procedures, please check the official website.

👉 Click here for the official website

Kanagawa Prefecture “Subsidy for Solar Power Generation Equipment and Home Storage Battery Installation for Existing Homes”

In Kanagawa Prefecture, subsidies are provided for those who install “solar panels” or “home storage batteries” in existing homes.

The subsidy amounts are a flat 40,000 yen for solar power generation equipment only, up to 100,000 yen for storage batteries depending on capacity, and a total of up to 300,000 yen when both are installed simultaneously.

This program is part of efforts to combat global warming and aims to promote the use of renewable energy.

For detailed conditions and application methods, please check the official page of Kanagawa Prefecture.

👉 Click here for details

Kanagawa Prefecture “Subsidy for Self-Consumption Type Solar Power Generation Equipment for Homes”

In Kanagawa Prefecture, subsidies are provided for the installation of “self-consumption type” systems that use electricity generated by solar panels in homes.

Eligible applicants are those who install solar power generation equipment in existing or newly built homes within the prefecture.

The condition is that at least 30% of the generated electricity must be consumed on-site (installation of storage batteries is also acceptable).

The subsidy amount is 10,000 yen per kW, with a maximum limit of 4 kW (maximum 40,000 yen).

For example, if you install a 3 kW solar panel, you can receive a subsidy of 30,000 yen.

This program aims to promote the use of renewable energy and achieve Kanagawa Prefecture’s “Zero Carbon Society”.


For more details, please check the official page of Kanagawa Prefecture.

👉 Click here for details

Kanagawa Prefecture “Subsidy for Self-Consumption Type Solar Power Generation Equipment for Homes”

In Kanagawa Prefecture, subsidies are provided for the installation of “self-consumption type” systems that use electricity generated by solar panels in homes.

Eligible applicants are those who install solar power generation equipment in existing or newly built homes within the prefecture.

The condition is that at least 30% of the generated electricity must be consumed on-site (installation of storage batteries is also acceptable).

The subsidy amount is 10,000 yen per kW, with a maximum of 4 kW (up to 40,000 yen).
For example, if you install a 3 kW solar panel, you can receive a subsidy of 30,000 yen.

This system aims to promote the use of renewable energy and achieve Kanagawa Prefecture’s “Zero Carbon Society.”

For more details, please check the official page of Kanagawa Prefecture.
👉 Click here for details

Kamakura City “Subsidy for Installation Costs of Residential Renewable Energy and Energy-Saving Equipment (Priority Measures Acceleration Project Subsidy)”

Eligible Applicants

• Homeowners and business owners within Kamakura City are eligible.

Requirements

• Subsidies for storage batteries are only available when they are introduced simultaneously with solar power generation equipment.

• Solar equipment must be newly installed and not certified under FIP or FIT.

• You must consume a certain percentage of the generated electricity (30% for general use, 50% for business use) for self-consumption.

• You must also meet conditions such as not being in arrears on city taxes or being affiliated with organized crime.

Subsidy Amount

Category	Target Equipment	Subsidy Details
General Households	Solar Power Generation Equipment	70,000 yen / kW (rounded down, with a maximum subsidy amount available)
Residential Storage Batteries	Storage Batteries	Subsidy of 1/3 of installation costs. Maximum limits: Residential: 141,000 yen/kWh, Commercial: 160,000 yen/kWh)

👉 Click here for details

Solar Panel Installation & Storage Battery Installation Price List

⇧Construction Menu | For costs related to solar panel installation and battery storage, click here

⇧Construction Menu | For costs related to solar panel removal and water heater removal, click here

Self-Estimate and Profit Simulation for Solar Power Generation

With the simulator above,
you can obtain an estimated quote and a profit simulation for up to 30 years!
If you know the total solar panel installation capacity and battery capacity for your roof, you can get an estimated quote and profit simulation!

Customer Testimonials

カテゴリ ‘voice’ は見つかりません

• customer reviews

  

  The craftsmen and their subordinates breathed perfectly, and I felt a sense of mutual trust.

• customer reviews

  

  The response was very fast, so I was able to make a decision right away.

• customer reviews

  

  They were energetic, polite and courteous, and very pleasant to deal with.

Examples of Solar Panel Installation

Construction Details

Solar Panel Installation 　Battery Installation

Existing Roofing Material

Horizontal Metal Roof (Super Galtect)

Installation Capacity

Solar Panel: 4.3KW 　Battery: 5KW class

Base Mounting Hardware Used

Niigata Manufactured Sales / Aluminum Catch Type Hardware

Price Range

2.2 million yen to 2.3 million yen 　*Due to the subsidy provided, the actual burden amount is approximately 1 million yen 　Estimated Recovery Period for Construction Costs: Approximately 8 to 9 years (self-consumption)

Construction Period

Approximately 3 days

Completion Month

April 2025

Inquiry Details

I am considering the installation of solar panels and storage batteries. I have heard that subsidies are available, and I would like to know how much subsidy I can receive.

How to Choose a Solar Panel Installation Contractor in Kamakura, Kanagawa Prefecture

There are many solar panel installation contractors available in Kamakura, and it can be confusing to decide which one to choose.

Therefore,when requesting solar panel installation or storage battery installation work, let’s check the following 4 points.

By confirming the above 4 points, you will be able to choose a reliable contractor.

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Knowledge of roofing in addition to solar panels

Many causes of poor installation of solar panels stem from a lack of knowledge on the part of the contractor.
While knowledge about solar panels is certainly important, understanding the roof and waterproofing at the installation site is also crucial.

Confirm the presence of warranties and aftercare services

When choosing a solar installation contractor, make sure to check for warranties.

While solar panels and batteries come with manufacturer warranties, it’s also important to confirm whether there is a construction warranty in case leaks occur after installation!

If the contractor offers a warranty period, they will address any leaks that occur after installation free of charge.

Additionally, some contractors provide aftercare services separate from warranties, so be sure to check if the contractor you are considering has aftercare services available.
Since abnormalities or damage on the roof may not be visible, you might not notice them yourself.
By conducting inspections during aftercare, you can detect issues early and prevent major repairs or failures!

Kakeru Koumuten Co., Ltd. provides a leak warranty as part of the construction warranty for solar panel installations.
We also offer aftercare services and send out annual DM reminders!
Please check the DM, and if you wish, we will visit for aftercare services!

Warranty and Payment翔工務店の屋根工事、外壁塗装工事、シーリング工事の保証など簡単にご説明させて頂いております！！ 弊社では前金、中間金は頂いておりません！！...

Obtain estimates from multiple contractors (at least 3 companies)

When requesting solar panel installation, be sure to obtain estimates from multiple contractors.

Even with the same manufacturer and the same construction content, costs and warranties or after-sales services may differ.

Additionally, obtaining multiple estimates makes it easier to negotiate prices.

To request your desired repair contractor at a lower price, it is essential to obtain estimates from multiple contractors.

When comparing estimates, please check carefully the following:

“Check the items in the estimate”
“Type of solar panels”
“Warranties and after-sales services”

Make sure to compare these details closely! If the quality of the materials is low or if steps are skipped, costs can be reduced, so avoid judging solely based on price!

【横浜市】屋根リフォームの相見積もりの重要性と比較するポイントを解説します！こんにちは！株式会社翔工務店です！ 横浜市の屋根リフォーム専門店の翔工務店です！こちらのページでは屋根リフォームの見積りをとる...

Check if they provide support for subsidy applications

Subsidies are often available for the installation of solar panels and storage batteries, but there is a possibility that they may not be granted due to application errors.
If you proceed with the support of the contractor, there should be no issues with the application.
Make sure to apply for the subsidy before starting construction and proceed with the work after it has been accepted!

After the construction, the flow will be that the subsidy will be decided and granted!

Benefits of Introducing Solar Power Equipment

The benefits of introducing solar panels are summarized in the following five points!

Benefit 1: Economic Benefits

The biggest advantage of introducing solar panels is the economic benefit!
Although the selling price of electricity has decreased compared to ten years ago, rising electricity costs allow you to gain benefits by consuming the electricity you generate!
As electricity costs are expected to continue to rise, being able to cover your consumption with solar power is appealing!
If you plan to use the generated electricity at night, installing a storage battery is essential!

Benefit 2: Subsidies can be utilized!

The conditions and amounts of subsidies vary by prefecture and municipality, but there is a high probability that you can apply for subsidies!
Reducing the actual burden amount through subsidies is a significant advantage!

Benefit 3: Environmentally friendly!

Solar power generation contributes to the reduction of greenhouse gas emissions and decreases reliance on fossil fuels, helping to mitigate global warming.
It is considered an environmentally friendly method of power generation as it produces no noise or harmful substances during the process.

Benefit 4: Improved Insulation Effect!!

By installing it on the roof or rooftop, insulation properties are enhanced.
Especially in summer, it can effectively block direct sunlight, providing significant heat insulation benefits!

Benefit 5: Electricity Use Possible Even During Power Outages!!

If you install a storage battery, you will be able to use electricity even during power outages!

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What Points Should You Be Careful About When Introducing Solar Power?

Next, we will explain the “three points to be careful about” when installing solar panels!

Point 1: Maintenance Costs Are Incurred

The maintenance costs are related more to the roof where the solar panels are installed rather than the solar panels themselves.
If you do a roof renovation 10 to 20 years later, there will be costs for removing and reinstalling the solar panels.
If the existing roof is deteriorating, it is reassuring to renovate it with durable roofing materials before installing the solar panels!

It would be comforting to request a simulation that considers maintenance costs before introducing solar panels!

Point 2: The Risk of Leaks Increases Depending on the Roofing Material

Slate roofs and tile roofs require holes to be made in the roof to secure solar panels.
As a result, there is an inherent risk of leaks due to the holes.
Of course, we will ensure proper waterproofing, but if you are concerned about making holes, one option is to replace the roofing material with a metal roof and secure the solar panels using the catch method.

Special Catch Base Hardware for Horizontal Metal Roofs

Note 3: The Roof Will Become Heavier

With the installation of solar panels, the roof will become heavier. In the case of tile roofs, it may be reassuring to replace them with lighter roofing materials.

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How to Choose Solar Panels?

There are many manufacturers of solar panels, and their output (power generation) and costs vary.
It is not accurate to say “This manufacturer has the best solar panels”; what is important is to choose solar panels that are suitable for your life plan and building!
Here are some points to consider when comparing solar panels!

Choosing Method 1: Compare Based on Total Power Generation of the Roof

When installing solar panels on the roof, it is important to consider how much power can be generated in a limited area, and the more power generated, the better!

Solar panels come in various sizes depending on the manufacturer, and their power generation also differs.
For example, a 350W output panel and a 400W output panel may seem that the higher output panel is better at first glance.
However, if the size of the panels does not fit well on the roof, there may be cases where “20 panels of 350W can be installed” and “15 panels of 400W can be installed,” leading to different installation capacities on the same roof due to the size difference.

400W × 15 panels = 6kW (total power generation of the roof)
350W × 20 panels = 7kW (total power generation of the roof)
As shown above, even if the output of a single panel is lower, the total output of the roof may be higher!

It is important to consider the total output of the roof rather than just the output of a single panel!

Choosing Method 2: Compare Based on Degradation Rate of Solar Panels

Solar panels have a degradation rate, and their power generation gradually decreases over 10 or 20 years.
After 30 years, some may have a 40% decrease in power generation, while others may only decrease by about 10%.
By considering the degradation rate along with the initial power generation, you can choose solar panels without regrets!

Choosing Method 3: Compare Based on Warranty Period

There are several types of warranties for solar panels, including “output warranty,” “natural disaster warranty,” and “system warranty,” and the warranty periods vary by manufacturer.
For output warranties, some manufacturers offer a 30-year warranty while others provide a 10-year warranty, so it’s quite varied!
A longer warranty is always better, so be sure to check the warranties of the manufacturers you are considering!

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If you are looking for a solar panel installation contractor in Kamakura City, Kanagawa Prefecture, please consult Kakeru Koumuten Co., Ltd.

Our company handles a wide range of exterior renovations in Kamakura City, including solar panel installations, roofing work, and exterior wall work.
We have received many requests from customers, including renovation companies and real estate agencies!

Kakeru Koumuten Co., Ltd. promises “high-quality renovations at low cost”, and we have received positive feedback from many customers.
We continue to update our construction performance records each year, and we will strive to improve quality to satisfy even more customers in the future.

Our company can perform all exterior renovations, not only roof overlay and re-roofing work but also partial roof repairs, exterior painting, and exterior cover methods.
We are also happy to assist with small jobs such as partial repairs and rain gutter cleaning!

In urgent cases such as leak repairs, we may also be able to provide emergency measures without scaffolding, so please consult us!

“I want to know recommended solar panels“, “I want to keep costs as low as possible“, “I just want an estimate for now“, and other specific requests will be met with optimal solutions.
We will never propose unnecessary work that prioritizes profit!
We always stand in our customers’ shoes and will propose the best construction plans!

We are confident that we will not be outdone by other companies in terms of cost, quality, and efficiency in exterior work!
We welcome competitive estimates with confidence!
Estimates are completely free, and if you find our company lacking compared to others, feel free to decline!

Features of Kamakura City, Kanagawa Prefecture

Kamakura City, Kanagawa Prefecture, is an attractive city where historical heritage and rich nature harmonize. The city is home to temples and shrines that evoke the atmosphere of an ancient capital, along with traditional streets, captivating many tourists with the beauty of nature throughout the seasons.

Kamakura City has a warm maritime climate, characterized by relatively mild weather throughout the year. Summers are hot and humid, while winters are relatively mild with rare snowfall. The annual precipitation is average, with significant rainfall during the rainy season. Surrounded by the sea and mountains, the terrain allows residents to experience the seasonal changes in nature up close.

One of the characteristics of Kamakura City is its excellent access from the metropolitan area. The JR Yokosuka Line and Enoshima Electric Railway (Enoden) are the main modes of transportation. Kamakura Station on the JR Yokosuka Line is about 1 hour direct from Tokyo Station and approximately 30 minutes from Yokohama Station. The Enoden connects Fujisawa Station to Kamakura Station, and along the line, there are scenic views of the Shonan coastline, making it a popular route for tourists.

Access by car is also convenient, with smooth travel from the city center and neighboring cities using the Yokohama-Yokosuka Road and Shonan Road. However, during the tourist season and on weekends, the roads can become congested, so public transportation is sometimes recommended.

Kamakura City is dotted with numerous historical and cultural landmarks. Notable spots include “Kōtoku-in,” known for the Great Buddha of Kamakura, “Hase-dera,” famous for its beautiful seasonal flowers, and “Tsurugaoka Hachimangu.” Additionally, the coastlines such as Yuigahama and Inamuragasaki are bustling with people enjoying marine sports and swimming, all while offering beautiful scenery.

Kamakura City is a unique city that blends history and nature, providing a variety of ways for visitors to enjoy their time.

Our company is based in Kanagawa Prefecture and has undertaken many exterior construction and solar power projects in Kamakura City. We are happy to assist with partial roof repairs such as roof overlay work, roof replacement, and leak repairs, as well as other repairs! Please feel free to consult us about any sudden troubles!

Service Areas in Kamakura City, Kanagawa Prefecture

Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.

We also welcome inquiries via LINE

For roofing, guttering, and exterior work and repairs in Kanagawa, contact Kakerukoumuten Co., Ltd..

AAA is a young company with an average age in the early 20s, but our technology is second to none.

One of our greatest strengths is that we can do all of our own scaffolding, roofing, and painting work. In this industry, where work is generally divided, we are able to provide a complete set of services, which saves time and effort in management and reduces costs. Above all, if there is any trouble, we will come to you right away!

We can confidently declare this. We are the youngest and most friendly renovator in Kanagawa!