For solar panel and battery installation in
Aoba-ku, Yokohama,
Kakeru Koumuten is at your service!
Kakeru Koumuten is a company specializing in exterior renovations based in Yokohama.
We handle numerous exterior renovations in Yokohama, and
you can trust us 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 Aoba-ku”
“Costs for solar panel and 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 is essential to get estimates from at least three companies!
This information will definitely be helpful for customers considering solar panel installation in Aoba-ku, Yokohama,
so please take a look!
目次
- 1 Reasons why Kakeru Koumuten is chosen for solar panel installations in Aoba-ku, Yokohama
- 1.1 1. We can 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 That May Be Applicable in Izumi-ku, Yokohama, Kanagawa Prefecture
- 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 Houses”
- 2.3 Kanagawa Prefecture “Subsidy for Self-Consumption Type Solar Power Generation Equipment”
- 2.4 Yokohama City “Subsidy for Installation Costs of Solar Power Generation Equipment”
- 2.5 Yokohama City “FY2026 Yokohama Green Energy Partnership Project (YGrEP)”
- 3 Solar Panel Installation & Storage Battery Installation Price List
- 4 Self-Estimate and Profit and Loss Simulator for Solar Power Generation
- 5 Customer Feedback
- 6 Examples of Solar Panel Installation
- 7 How to Choose a Solar Panel Installation Contractor in Aoba-ku, Yokohama
- 8 Benefits of Introducing Solar Power Equipment
- 9 What points should be noted when introducing solar power generation?
- 10 How to Choose Solar Panels?
- 11 If you are looking for a solar panel installation company in Aoba-ku, Yokohama, please consult Kakeru Koumuten Co., Ltd.
- 12 Features of Aoba-ku, Yokohama
Reasons why Kakeru Koumuten is chosen for solar panel installations in Aoba-ku, Yokohama
One reason why customers in Aoba-ku, Yokohama trust us with solar panel installations is that
“Kakeru Koumuten is located in Yokohama,” but
“Our unique strengths in solar panel installation that cannot be imitated by other companies”
have received high praise from many customers.
solar panel installation work in Izumi-ku, so we would be grateful if you could compare it with estimates from other companies.
Because we are confident, we welcome estimates from as many companies as possible!
1. We can 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 specialists in solar panel installation have knowledge about solar panels, it is a reality that many lack knowledge regarding the roof and waterproofing at the installation site.
For peace of mind and to avoid maintenance issues or 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 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 construction 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 set up scaffolding in-house.
By performing scaffolding work with our own scaffolding team instead of outsourcing, we can also reduce the costs associated with scaffolding work.
We have scaffolding materials sufficient 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, we canpurchase materials at a lower cost!
Additionally, we always have a stock of roofing materials available, allowing us torespond 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, separating and recycling waste can significantly cut down on disposal costs.
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 revenue 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 everything, including 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 as well as 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 every year, 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.
If you cannot access the roof due to height, we can respond using a drone!
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, 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 scenarios.
Subsidies and Grants That May Be Applicable in Izumi-ku, Yokohama, Kanagawa Prefecture
National Subsidy: “Support Project for the Introduction of Storage Battery Systems in Homes”
The national 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) to 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 Houses”
In Kanagawa Prefecture, subsidies are provided for those who install “solar panels” and “home storage batteries” in existing houses.
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 system is part of measures against 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 in households.
Eligible applicants are those who install solar power generation equipment in existing or newly built houses in the prefecture.
As a condition, it is required that more than 30% of the generated electricity is 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 (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
Yokohama City “Subsidy for Installation Costs of Solar Power Generation Equipment”
Yokohama City has implemented a system 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 eligible, but there are opportunities 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 rebates to households and businesses in the city that participate in YGrEP and install 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 rebates, and more, please check and inquire at this special website.
Solar Panel Installation & Storage Battery Installation Price List
Self-Estimate and Profit and Loss Simulator for Solar Power Generation
With the simulator above,
you can obtain an estimated quote and a profit and loss 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 obtain an estimated quote and profit and loss simulation!
Customer Feedback
カテゴリ ‘voice’ は見つかりません
Examples of Solar Panel Installation
| Construction Details |
| Installation of Solar Panels Installation of Storage Batteries |
| Existing Roofing Material |
| Horizontal Metal Roof (Super Galtect) |
| Installation Capacity |
| Solar Panels: 4.3KW Storage 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 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 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 when placed on the roof.
Since we can also determine the installation capacity, it enables us to perform power generation simulations and financial simulations.
We have also understood the expected amount of subsidies, and we explained this to the customer along with the estimate!
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 it can be confusing to decide which one to choose.
Therefore,when requesting solar panel installation 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 caused by contractor’s lack of knowledge
・Installed solar panels on a deteriorated roof, leading to leaks..
・Installed solar panels on a roof with a short lifespan, requiring renovations to detach and reattach the panels within a few years..
・Misjudged the type of waterproofing and performed incorrect treatment, resulting in leaks..
and more
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, be sure to check for warranties.
While the solar panels and storage batteries come with manufacturer warranties, also confirm whether there is a construction warranty in case leaks occur after installation!
Contractors that offer warranty periods will provide free support in case of leaks after installation.
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 damages on the roof may not be visible, you might not notice them yourself.
By conducting inspections during after-sales maintenance, you can detect issues 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 conduct after-sales maintenance and send out annual DM!
Please check the DM, and if you wish, we will visit for after-sales maintenance!
Obtain estimates from multiple contractors (at least 3 companies)
When requesting solar panel installation, 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 preferred repair contractor at a lower price, it is essential to get estimates from several contractors.
When comparing estimates, please check the following:
“Verification of estimate items”
“Type of solar panels”
“Warranties and after-sales service”
Make sure to compare these details carefully! 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 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 the construction and proceed with the work only after it has been accepted!
After the construction, the flow will be that the subsidy will be approved 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 rising, 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 carbon dioxide 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 prevent direct sunlight, leading to significant heat insulation effects!
Benefit 5: Electricity Use Possible Even During Power Outages!!
By installing a storage battery, it becomes possible to use electricity even during emergencies such as power outages!
What points should be noted when introducing solar power generation?
Next, we will explain the “three points to note” when installing solar panels!
Point 1: Maintenance costs may be incurred
The maintenance costs are related more to the roof where the solar panels are installed rather than the solar panels themselves.
If you perform roof remodeling 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 remodel it with durable roofing materials before installing the solar panels!
It would be comforting to ask for 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 drilled in the roof to secure solar panels.
As a result, there is an inherent risk of leaks due to the holes made in the roof.
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 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.
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 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 come in various sizes depending on the manufacturer, and their power generation also differs.
For example, a 350W panel and a 400W 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” due to the size difference, even on the same roof.
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 not deciding solely based on 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!
The longer the warranty, the better, so let’s check the warranties of the manufacturers you are considering!
If you are looking for a solar panel installation company in Aoba-ku, Yokohama, please consult Kakeru Koumuten Co., Ltd.
Our company handles many exterior renovations, including solar panels, roof work, and exterior wall work in Aoba-ku, Yokohama.
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 great feedback from numerous customers.
We continue to update our construction achievements 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 work and re-roofing but also partial roof repairs, exterior painting, and exterior cover methods.
We are happy to assist with small jobs like partial repairs and rain gutter cleaning!
In case of emergencies like roof leaks or if temporary measures can be taken without scaffolding, please consult us!
“I want to know recommended solar panels“, “I want to keep costs down as much 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 position 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 our company is found to be inferior to others, you are free to decline!
Features of Aoba-ku, Yokohama
Aoba-ku, Yokohama, is located in the southwestern part of the city, an area rich in nature with a calm living environment. The population is about 150,000, and although it is primarily a residential area, there are many green spaces and parks, providing an environment where residents can enjoy a relaxed lifestyle. Geographically, it features hilly terrain and rural areas, with rivers and springs scattered throughout the district, allowing residents to enjoy seasonal landscapes.
The climate is mild, with relatively gentle winters that are easy to endure, and summers can feel cool due to the abundance of greenery in the area. The weather is stable throughout the year, making it a comfortable place to live while enjoying the natural environment. In terms of access, major roads run through the area, making it easy to travel by car, and moving outside the district is also smooth. Thus, the charm of Aoba-ku lies in its abundance of nature and the ease of living in residential neighborhoods. With many green spaces and walking spots, it provides a refreshing environment. The residential areas are quiet and suitable for a wide range of age groups.
Our company is based in Yokohama and has undertaken many exterior construction and solar projects in Izumi-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 for any sudden troubles!
Service Areas in Izumi-ku, Yokohama
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and Tokyo.
List of Areas in Izumi-ku, Yokohama
Ikenotani, Izumi-ku / Izumigaoka, Izumi-ku / Izumi Chuo Kita, Izumi-ku / Izumi Chuo Minami, Izumi-ku / Izumimachi, Izumi-ku / Okazumachi, Izumi-ku / Katsurazaka, Izumi-ku / Kamiiida, Izumi-ku / Shimo-iida, Izumi-ku / Shimo-izumi, Izumi-ku / Shirayuri, Izumi-ku / Shinbashi, Izumi-ku / Nakada Kita, Izumi-ku / Nakada, Izumi-ku / Nakada Nishi, Izumi-ku / Nakada Higashi, Izumi-ku / Nakada Minami, Izumi-ku / Nishi-gaoka, Izumi-ku / Yayoi-dai, Izumi-ku / Ryoke, Izumi-ku / Ryokuen, Izumi-ku
・Trust Kakeru Koumuten for exterior wall painting in Aoba-ku, Yokohama!
・Trust Kakeru Koumuten for roof renovations in Aoba-ku, Yokohama!
・Trust Kakeru Koumuten for exterior renovations in Aoba-ku, Yokohama!
・Kakeru Koumuten Co., Ltd. project achievements
・Kakeru Koumuten Co., Ltd. aftercare services
・Kakeru Koumuten Co., Ltd. service menu and price list
・Kakeru Koumuten Co., Ltd. staff blog and announcements
・Explaining the importance of comparative estimates and key points!
・Top 12 solar power generation manufacturers! Introducing features and selection tips!
・What are the installation costs for solar power generation? Comprehensive tips to reduce costs!
・Where are the best locations for solar panel installation? Here are some key points for selecting installation sites!
・Click here for a solar panel estimate!
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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!
