Leave Your Solar Panel Installation Work in Aoba-ku, Yokohama to Kakeru Koumuten Co., Ltd.!

For solar panel and storage battery installation in
Aoba-ku, Yokohama,
Kakeru Koumuten is your trusted partner!

Kakeru Koumuten is a company specializing in exterior renovations based in Aoba-ku, Yokohama.
In Aoba-ku, where our main office is located, we handle numerous exterior renovation projects,
including the installation of solar panels and storage batteries!
Here, we would like to introduce“Why Kakeru Koumuten is chosen for solar panel installations”.

“How to Choose a Solar Panel Contractor in Aoba-ku”
“Costs for Solar Panel and Storage Battery Installation”
“Subsidies Available for Solar System Installation in Aoba-ku”
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 you have no regrets about your solar panel installation, it isessential to obtain estimates from at least three companies!

For customers considering solar panel installation in Aoba-ku, Yokohama,
this information will definitely be helpful, so please take a look!

Reasons Why Kakeru Koumuten is Chosen for Solar Panel Installations in Aoba-ku, Yokohama

One reason our company is entrusted with solar panel installations by customers in Aoba-ku, Yokohama is
that “Kakeru Koumuten is located in Aoba-ku, Yokohama”,
but we also have“strengths in solar panel installation that cannot be imitated by other companies”
, which has earned us high praise from many customers.

Because we are confident, we welcome estimates from any number of companies!

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

 
Most troubles such as leaks caused by solar panel installation are due to the lack of knowledge of the solar panel installation contractors.
While specialized contractors have knowledge about solar panels, many lack knowledge regarding the roof and waterproofing at the installation site, which is a reality…
For peace of mind and to avoid maintenance issues or troubles after installation, 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.Facilities specialized in exterior renovations

At Kakeru Koumuten Co., Ltd., we have prepared the following warehouses and material storage areas to provide low-cost, high-quality solar work and exterior renovations.
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 and can assemble the scaffolding ourselves.
By performing scaffolding work with our own scaffolding team instead of outsourcing, we can also cut costs on 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, so we can respond quickly in emergencies!

In-house sorting and transportation of waste materials

When installing solar panels, roofing work is often involved, resulting in various types of waste materials such as paint, wood, and metal.
Most contractors dispose of these materials all together, but by sorting and recycling the waste, significant cost savings on waste disposal can be achieved.

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 installed on 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 show 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 sales and construction management, smooth communication is possible.

We can provide consistent in-house construction from temporary scaffolding installation 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, and we are confident in our construction techniques.
We are capable of handling large-scale roofing projects for factories and other facilities!

5. Warranty and Aftercare

In addition to the manufacturer’s warranty for solar panel installation, we also provide our own leak warranty!
Aftercare is available every year, 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.

Even if you cannot access the roof at height, we can respond using a drone!
During leak investigations, we can also conduct surveys using a thermal imaging camera.

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

7. Human Resource Development

We create various roof models to enhance skills 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。...

Subsidies and Grants Potentially Available in Aoba-ku, Yokohama, Kanagawa Prefecture

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

The government is implementing the “Support Project for the Introduction of Storage Battery Systems in Homes” 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 amount is 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”

In Kanagawa Prefecture, subsidies are provided for the installation of “self-consumption type” solar power generation equipment that uses electricity generated by solar panels at home.

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

As a condition, it is required that more than 30% of the generated electricity is consumed at home (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 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

Yokohama City “Subsidy for Installation Costs of Solar Power Generation Equipment”

In Yokohama City, a system is implemented to subsidize part of the installation costs for small and medium-sized enterprises and sole proprietors within the city for solar power generation equipment and other installations.

This aims to promote the introduction of renewable energy and advance measures against global warming.

The target is for the installation of solar panels and storage batteries at business facilities within the city. Installation at residential properties is not included, but there is an opportunity for those who operate stores or businesses at their homes.

The subsidy amount is set according to the scale of installation, with 50,000 yen per kW for solar power generation equipment (up to 500,000 yen) and 20,000 yen per kWh for storage batteries (up to 200,000 yen).

For detailed conditions and application methods, please check the official website of Yokohama City.

👉 Click here for the official Yokohama City page

Yokohama City “FY2026 Yokohama Green Energy Partnership Project (YGrEP)”

Yokohama Green Energy Partnership (YGrEP) is a project aimed at achieving a decarbonized society.

Yokohama City is providing cashless point rewards to households and businesses within the city that participate in YGrEP and install the eligible equipment (see the eligible equipment below).

◎ Eligible Equipment ◎

● Solar power generation equipment: storage batteries / eco-cute / electric vehicles and plug-in hybrid vehicles

● Electric vehicles alone (without solar power generation equipment)

● Fuel cells (EneFarm)

● Solar thermal utilization systems

● V2H charging and discharging equipment

For information on application methods, combining with national and Kanagawa Prefecture subsidy projects, point rewards, and more, please check and inquire at the special site here.

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 hot water heater dismantling, 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 installation capacity of solar panels on the roof and the capacity of the battery storage, you can get an estimated quote and profit simulation!

Customer Feedback

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.

Case Studies of Solar Panel Installation

Construction Details

Solar Panel Installation 　Battery Installation

Existing Roofing Material

Horizontal Metal Roof (Super Galtect)

Installation Capacity

Solar Panels: 4.3KW 　Battery: 5KW class

Base Mounting Hardware Used

Niigata Manufacturing/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 time for cost recovery: 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 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 Aoba-ku, Yokohama

There are many solar panel installation contractors available in Aoba-ku, Yokohama, and you may be unsure which one to choose.

Therefore,when requesting solar panel installation or storage battery installation work, make sure to 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.

Check for warranties and after-sales maintenance

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

While solar panels and storage batteries come with manufacturer warranties, also 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 after-sales services separate from warranties, so be sure to check if the contractor you are considering has after-sales service.
Since abnormalities or damage on the roof can be in areas that are not visible, you may not notice them yourself.
By conducting inspections during after-sales maintenance, you can detect issues early and prevent major repairs or failures!

Kakeru Koumuten Co., Ltd. offers a leak warranty as part of the construction guarantee for solar panel installations.
We also provide after-sales maintenance and send out annual DM notifications!
Please check the DM, and if you wish, we will come to perform after-sales maintenance!

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 the installation of solar panels, be sure to obtain estimates from multiple contractors.

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

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

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

When comparing estimates, please check carefully the following:

“Verification of estimate items”
“Types of solar panels”
“Warranties and after-sales service”

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 making decisions based solely 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 the construction starts 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 installing solar panels are as follows!

Benefit 1: Economic Advantage

The biggest advantage of installing solar panels is the economic benefit!
While 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!
Electricity costs are expected to continue to rise, making it attractive to cover your consumption with solar power!
If you plan to use the generated electricity at night, installing a storage battery is essential!

Benefit 2: Subsidies can be utilized!

Subsidy conditions and amounts 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 dependence on fossil fuels, helping to mitigate global warming.
It is considered an environmentally friendly method of power generation as it does not produce 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!!

By installing a storage battery, you can use electricity even during emergencies like power outages!

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What points should you be aware of when introducing solar power generation?

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

Point 1: Maintenance costs may be incurred

The maintenance costs are related to the roof where the solar panels are installed rather than the solar panels themselves.
If you perform roof renovations 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 may increase 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 these 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.

Catch-type base hardware for horizontal metal roofs

Note 3: The roof will become heavier

With the addition 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”, as the important thing 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 by 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 the limited area, and the more power generated, the better!

Solar panels vary in size and power generation depending on the manufacturer.
For example, a 350W output panel and a 400W output panel may seem like 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 size differences.

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 by degradation rate of solar panels

Solar panels have a degradation rate, and their power generation gradually decreases over 10 years and 20 years.
After 30 years, some may see 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 by 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 varies widely!
Since longer warranties are generally better, 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 Aoba-ku, please consult Kakeru Koumuten Co., Ltd.

Our company handles a wide range of exterior renovations, including solar panel installations, roof work, and exterior wall work in Aoba-ku, Yokohama.
We receive requests from many customers, including renovation companies and real estate agencies, who have contacted us!

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

Our company can handle 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 about 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 plan!

We are confident that we will not be outdone in terms of cost, quality, and organization compared to other companies in exterior construction!
We welcome competitive estimates with confidence!
Estimates are completely free, and if you find that we are inferior to other companies, feel free to decline!

Features of Aoba-ku, Yokohama

Aoba-ku, Yokohama, is an area that combines nature with convenient urban functions!
Located in the northwest part of Yokohama City, it covers an area of approximately 35 km², making Aoba-ku the second largest ward in Yokohama City after Totsuka-ku.
It has convenient transportation access, being within a 30-minute train ride to Shibuya Station, and many commuters and students live here.

It is characterized by a quiet residential area, many hills, and a rich green landscape that spreads along the Tsurumi River flowing through the central part of the district.

Since the residential area is primarily developed in hilly terrain, there tends to be many slopes, but there are plenty of relaxing spots. Notably, “Kodomo no Kuni,” which makes use of the vast nature in Aoba-ku, offers an attractive natural playground for families and child-rearing generations.

Our company is based in Aoba-ku, Yokohama, and we handle many exterior construction and solar power projects in Aoba-ku, Yokohama.
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 Aoba-ku, Yokohama

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

We welcome consultations via LINE as well◎

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!