For solar panel and storage battery installation in
Miyamae-ku, Kawasaki,
Kakeru Koumuten is your trusted choice!
Kakeru Koumuten is a company specializing in exterior renovations based in Kanagawa Prefecture.
We have handled numerous exterior renovations in Miyamae-ku, Kawasaki,
and we are also entrusted with the installation of solar panels and storage 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 Miyamae-ku”
“About the Costs of Solar Panel and Storage Battery Installation”
“About Subsidies Available for Solar System Installation in Miyamae-ku”
We will also explain the above three points!
Installing solar panels comes with 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 Miyamae-ku, Kawasaki,
this information will surely be helpful, so please take a look!
目次
- 1 Reasons Why Kakeru Koumuten is Chosen for Solar Panel Installations in Miyamae-ku, Kawasaki
- 1.1 1. We also handle exterior renovations other than solar panel installation!
- 1.2 2.Equipment specialized for exterior renovations
- 1.3 3.Complete In-House Construction
- 1.4 4. Various Permits Obtained & Skilled Workers on Staff
- 1.5 5. Warranty and Aftercare
- 1.6 6. Flexible and Prompt Response
- 1.7 7. Human Resource Development
- 2 Subsidies and Grants Available in Miyamae-ku, Kawasaki City, Kanagawa Prefecture that May Apply
- 2.1 National Subsidy “Support Project for the Introduction of Storage Battery Systems in Homes”
- 2.2 Kanagawa Prefecture “Subsidy for Solar Power Generation Equipment and Home Storage Battery Installation for Existing Homes”
- 2.3 Kanagawa Prefecture “Subsidy for Self-Consumption Type Solar Power Generation Equipment”
- 2.4 Kawasaki City Solar Power Generation Equipment Installation Subsidy (Fiscal Year 7)
- 3 Solar Panel Installation & Battery Storage Pricing Table
- 4 Self-Estimate and Profit Simulation for Solar Power Generation
- 5 Customer Feedback
- 6 Examples of Solar Panel Installation
- 7 How to Choose a Solar Panel Installation Contractor in Miyamae-ku, Kawasaki
- 8 Benefits of Introducing Solar Power Equipment
- 9 What points should you be aware of when introducing solar power generation?
- 10 How to Choose Solar Panels?
- 11 If you are looking for a solar panel installation contractor in Miyamae-ku, Kawasaki, please consult Kakeru Koumuten Co., Ltd.
- 12 Features of Miyamae-ku, Kawasaki
Reasons Why Kakeru Koumuten is Chosen for Solar Panel Installations in Miyamae-ku, Kawasaki
One reason why we are entrusted with solar panel installations by customers in Miyamae-ku, Kawasaki is that
“Kakeru Koumuten is located in Yokohama,” but
“Our unique strengths in solar panel installation that cannot be imitated by other companies”
have also received high praise from many customers.
solar panel installation work in Miyamae-ku, so we would be grateful if you could compare our estimates with those of other companies.
Because we are confident, we welcome estimates from any number of companies!
1. We also handle exterior renovations other than solar panel installation!
Most troubles such asleaks that occur during 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 installation areas such asroofs and waterproofing, which is a reality…
It is safer to have someone knowledgeable about roofs to avoid maintenance and troubles after construction!
Kakeru Koumuten Co., Ltd. is strong in roofing work and can also detach and attach solar panels in-house, allowing for quick responses to maintenance and urgent troubles after solar panel installation!
2.Equipment specialized for exterior renovations
Kakeru Koumuten Co., Ltd. has prepared the following warehouses and material storage areas to provide solar work and exterior renovations atlow cost and high quality.
We have establishedfive 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 set up scaffolding in-house.
By conducting 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, so we can respond quickly even in emergencies!
In-house sorting and transportation of waste materials
The installation of solar panels often involves roofing work, resulting in 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 installed on the roofing materials!
We can also provide simulations for the potential earnings and installation costs when introducing 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 everything, including sales and construction management, smooth communication is ensured.
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, 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!
6. Flexible and Prompt Response
Our company is equipped to handle various roofing troubles and situations.
Even if you cannot access the roof at high places, we can respond using a drone!
During rain leak investigations, we can also conduct inspections 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 preferences.
7. Human Resource Development
We are creating various roof models to enhance our skills and conducting 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.
Subsidies and Grants Available in Miyamae-ku, Kawasaki City, Kanagawa Prefecture that May Apply
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 support 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, and it can further enhance “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” systems that use 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 to consume more than 30% of the generated electricity for self-consumption (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 information, please check the official page of Kanagawa Prefecture.
👉 Click here for details
Kawasaki City Solar Power Generation Equipment Installation Subsidy (Fiscal Year 7)
■ Eligible Equipment and Amounts
-
Solar Power Generation Equipment
30,000 yen per kW -
Stationary Lithium-ion Storage Battery
20,000 yen per 1kWh -
V2H Charging and Discharging Equipment
Flat rate of 100,000 yen
■ Procedure Flow
-
Online Application
・Submit necessary information online, including the “Application for Grant” (paper applications are not accepted) -
Submission of Completion Notification
・Within 30 days of project completion, or by February 13, 2026 (Friday), whichever comes first -
Submission of Invoice (by mail in paper form)
・Submit an invoice with the applicant’s seal by March 6, 2026 (Friday)
■ Application Schedule
-
Application Acceptance Period：From April 14, 2025 (Monday) to December 26, 2025 (Friday)
-
Deadline for Submission of Completion Notification：By February 13, 2026 (Friday) or within 30 days of project completion
-
Invoice Submission Deadline：By March 6, 2026 (Friday)
■ Main Application Conditions and Required Documents
-
No delinquency in city or prefectural taxes
-
Main documents required for online application:
-
Application form
-
Consent form (if the homeowner and applicant are different)
-
Tax payment certificate or tax exemption certificate
-
Current condition photos before installation
-
A copy of the contract stating the model number and capacity of the equipment
-
Related documents if there are plans to apply for other subsidies
-
Solar Panel Installation & Battery Storage Pricing Table
⇧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 installation capacity of solar panels on the roof and the capacity of the battery, you can get an estimated quote and profit simulation!
Customer Feedback
カテゴリ ‘voice’ は見つかりません
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 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 a storage battery. I heard that subsidies are available, and I would like to know how much subsidy I can receive. |
Our Proposal
We visited to provide an estimate and created a layout diagram for the solar panels based on the blueprints!
The layout diagram shows the arrangement of solar panels on the roof.
Since we can also determine the installation capacity, it allows for power generation simulations and financial simulations.
We have also understood the expected amount of subsidies, which we explained to the customer along with the estimate!
How to Choose a Solar Panel Installation Contractor in Miyamae-ku, Kawasaki
There are many solar panel installation contractors available in Miyamae-ku, Kawasaki, and it can be confusing to decide which one to choose.
Therefore, when requesting solar panel installation contractors or storage battery installation work, let’s confirm the following 4 points.
● Have extensive knowledge not only about solar panels but also about roofs
● Confirm the existence of warranties and after-sales maintenance
● Obtain estimates from multiple contractors (at least 3 companies)
● Confirm whether they provide support for subsidy applications
By confirming the above 4 points, you will be able to choose a reliable contractor.
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.
⚠︎Examples of troubles due to contractor’s lack of knowledge
・Solar panels were installed on a severely deteriorated roof, leading to leaks..
・Solar panels were installed on a roof with a short lifespan, requiring renovations to detach and reattach the solar panels within a few years..
・Misjudging the type of waterproofing led to incorrect treatment and subsequent leaks..
and so on.
When installing solar panels, understanding the condition and type of the existing roof allows you to avoid unnecessary expenses and unexpected troubles.
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 has a warranty period, they will handle any leaks that occur after installation at no charge.
Additionally, some contractors offer 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 may not be visible, you might not notice them yourself.
By conducting inspections during after-sales maintenance, you can detect abnormalities early and prevent major repairs or breakdowns!
Kakeru Koumuten Co., Ltd. provides a leak warranty as part of the construction warranty for solar panel installations.
We also offer after-sales maintenance and send out annual DM notifications!
Please check the DM, and if you wish, we will visit you for after-sales maintenance!
Obtain estimates from multiple contractors (at least 3 companies)
When requesting solar panel installation, be sure to get estimates from multiple contractors.
Even for the same manufacturer and the same construction details, costs and warranties or after-sales services may vary.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your preferred repair contractor at a lower price, it is essential to get estimates from multiple contractors.
When comparing estimates, please check carefully:
“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!
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 funding 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 the 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 installing solar panels are summarized in the five points below!
Benefit 1: Economic Advantage
The biggest advantage of installing solar panels is the economic benefit!
Although the selling price of electricity has decreased compared to ten years ago, the rising electricity costs allow you to benefit from consuming the power you generate!
Electricity prices are expected to continue rising, making it attractive to cover your consumption with solar power!
If you plan to use the generated power 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 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!!
Installing on the roof or rooftop improves insulation properties.
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!
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
Maintenance costs are more 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 associated with 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 of making holes in the roof, there is inevitably a risk of leaks.
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
Since solar panels will be placed on the roof, it will become heavier. In the case of tile roofs, it may be reassuring to replace them with lighter roofing materials.
How to Choose Solar Panels?
There are many manufacturers of solar panels, and their output (power generation) and costs vary.
It is not simply a matter of “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 the 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 like the higher output panel is better at first glance.
However, if the size of the panels does not fit well with 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 one 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 the 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 have a 40% decrease in power generation, while others may only decrease by about 10%.
By not deciding solely based on the initial power generation and considering the degradation rate, 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.
Regarding the output warranty, 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!
If you are looking for a solar panel installation contractor in Miyamae-ku, Kawasaki, please consult Kakeru Koumuten Co., Ltd.
Our company handles many exterior renovations, including solar panel installations, from roofing work to exterior wall work in Miyamae-ku, Kawasaki.
We have received 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 positive 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 perform all exterior renovations, not only roof overlay and re-roofing work but also partial roof repairs, exterior wall painting, and exterior wall 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 be able to provide emergency measures without scaffolding, so please consult with 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“, we will provide optimal solutions for your specific requests.
We will never propose unnecessary work that prioritizes profit!
We always stand in the customer’s shoes and will propose the best construction plan!
We are confident that we will not be outdone in terms of cost, quality, and planning for exterior work compared to other companies!
We welcome competitive estimates!
Estimates are completely free, and if you find that our company is inferior to others, you are free to decline!
Features of Miyamae-ku, Kawasaki
Miyamae-ku, Kawasaki, is located in the center of the city and is an area where lush residential neighborhoods harmonize with urban convenience. The population is approximately 230,000 (as of 2023), surrounded by the gentle undulations of the Tama Hills, characterized by many parks and green spaces. The climate is mild, providing a comfortable environment throughout the year.
In terms of access, using the Tokyu Den-en-toshi Line’s Miyamaedaira Station or Saginuma Station allows for smooth travel to Shibuya and Yokohama, and the bus routes are well-developed, making it convenient to reach Kawasaki Station and Musashi-Kosugi. Furthermore, major trunk roads are well-maintained, making it easy to travel by car in the area.
While a quiet residential area spreads out, there are also ample commercial facilities and restaurants, making it an attractive place with high convenience for daily life. Educational institutions and medical facilities are well-equipped, making it popular among families and seniors. With a rich natural environment, many sports facilities and parks, it is a comfortable town where one can enjoy a peaceful lifestyle.
Our company handles many exterior construction and solar power projects in Aoba-ku, Kawasaki.
We are happy to assist with partial roof repairs such as roof overlay (cover method), 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, Kawasaki
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of Areas in Aoba-ku, Kawasaki
Arima, Aoba-ku / Inuzuka, Aoba-ku / Kajigaya, Aoba-ku / Keyakidai, Aoba-ku / Odai, Aoba-ku / Goshoduka, Aoba-ku / Saginuma, Aoba-ku / Shio Midai, Aoba-ku / Kamikohonmachi, Aoba-ku / Kamiki, Aoba-ku / Shirahata-dai, Aoba-ku / Sugougaoka, Aoba-ku / Sugou, Aoba-ku / Hira, Aoba-ku / Dobashi, Aoba-ku / Minami-no-kawa, Aoba-ku / Nishinogawa, Aoba-ku / Nogawadai, Aoba-ku / Nogawa-honmachi, Aoba-ku / Hatsuyama, Aoba-ku / Higashi-Arima, Aoba-ku / Masune, Aoba-ku / Mizusawa, Aoba-ku / Minami-Nogawa, Aoba-ku / Miyazaki, Aoba-ku / Miyamae-dai, Aoba-ku
・Leave your exterior renovations in Aoba-ku, Kawasaki to Kakeru Koumuten Co., Ltd.!
・Trust Kakeru Koumuten Co., Ltd. for roof renovations in Aoba-ku, Kawasaki!
・Count on Kakeru Koumuten Co., Ltd. for exterior wall painting in Aoba-ku, Kawasaki!
・Kakeru Koumuten Co., Ltd. Project Achievements
・Kakeru Koumuten Co., Ltd. After-Maintenance
・Kakeru Koumuten Co., Ltd. Construction Menu and Price List
・Kakeru Koumuten Co., Ltd. Staff Blog and Announcements
・We explain the importance of getting multiple estimates and points to compare!
・Top 12 solar power generation manufacturers! We also introduce features and selection tips!
・What are the installation costs for solar power generation? We thoroughly explain tips to reduce costs!
・What are the best locations for installing solar power generation? We also introduce points for selecting installation sites!
・Check out our solar power generation estimates here!
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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!
