For solar panel and storage battery installation in
Machida City, Tokyo,
please leave it to Kakeru Koumuten!
Kakeru Koumuten is a company specializing in exterior renovations.
Based in Honmachida, Machida City,
we handle numerous exterior renovations within Machida City.
You can also trust us with the installation of solar panels and storage batteries!
Here, we will introduce “Reasons Why Kakeru Koumuten is Chosen for Solar Panel Installation”
.
“How to Choose a Solar Panel Contractor in Machida City, Tokyo”
“About the Costs of Solar Panel and Storage Battery Installation”
“About the Subsidies Available for Solar System Installation in Machida City, Tokyo”
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 the introduction of solar panels in Machida City, Tokyo,
this information will definitely be useful, so please take a look!
目次
- 1 Reasons Why Kakeru Koumuten is Chosen for Solar Panel Installation in Machida City, Tokyo
- 1.1 1. We also handle exterior renovations other than solar panel installations!
- 1.2 2. Facilities specialized in exterior renovations
- 1.3 3.Complete In-House Construction
- 1.4 4. Acquisition of various permits and skilled workers on staff
- 1.5 5. Warranty and Aftercare
- 1.6 6. Flexible and Prompt Response
- 1.7 7. Human Resource Development
- 2 Potential Subsidies and Grants Available in Machida City, Tokyo
- 3 Solar Panel Installation & Battery Storage Price List
- 4 Self-Estimate and Profit Simulation for Solar Power Generation
- 5 Customer Testimonials
- 6 Case Studies of Solar Panel Installations
- 7 How to Choose a Solar Panel Installation Contractor in Machida, Tokyo
- 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 Machida City, Tokyo, please consult Kakeru Koumuten Co., Ltd.
- 12 Features of Machida City, Tokyo
Reasons Why Kakeru Koumuten is Chosen for Solar Panel Installation in Machida City, Tokyo
The reasons why we are entrusted with solar panel installation by customers in Machida City, Tokyo,
are partly due to our base in Machida City,
and we have “strengths in solar panel installation that cannot be imitated by other companies”
, which have received high praise from many customers.
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 installations!

Most troubles such as leaks that occur during solar panel installations are due to the lack of knowledge of the solar panel installation contractors.
While specialized contractors for solar panel installations have knowledge about solar panels, the reality is that many lack knowledge regarding the roof and waterproofing at the installation site.
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 us to respond quickly to maintenance and urgent troubles after solar panel installation!
2. Facilities specialized in 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 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 ourselves.
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, we canprocure materials at a lower cost!
Additionally, we always have a stock of roofing materials, allowing us torespond quickly in emergencies!
In-house sorting and transportation of waste materials
When installing solar panels, roofing work is often involved, generating 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 potential earnings and installation costs when introducing solar panels!
Since roofing work often accompanies exterior wall work, 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 possible.
We can provide consistent in-house construction from temporary scaffolding installation to exterior wall painting and roof renovations!
4. Acquisition of various permits and 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, 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 altitudes, 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 preferences.
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.
Potential Subsidies and Grants Available in Machida City, Tokyo
National Subsidy: “Support Program for the Introduction of Storage Battery Systems in Homes”
The government is implementing the “Support Program 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 storage batteries for residential use 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
Tokyo’s Subsidy Program “Promotion of Solar Power Generation Installation in Households”
“Subsidy Program for Updating Power Conditioners Related to Solar Power Generation Systems”
Eligible Participants
This subsidy is available to residents of Tokyo who already have a solar power generation system installed and are only replacing the power conditioner.
Requirements and Conditions
The power conditioner to be replaced must be unused.
Regarding solar modules, they must have JETPVm certification or IECEE-PV-FCS certification, or be products of equivalent or higher standards.
Subsidy Rate and Amount
Half of the replacement cost will be subsidized, with a maximum limit of 100,000 yen per power conditioner.
For more details, please click here!
“Promotion of Battery Storage Installation in Households (Disaster-Resilient and Health-Contributing Insulated and Solar Homes Expansion Project)”
Eligible Participants
This subsidy program targets individuals and households installing new battery storage systems in residential properties within Tokyo. It is a condition that a solar power generation system is already installed or installed simultaneously.
Requirements
Eligible systems must be registered battery storage equipment with SII (Environmental Collaboration Initiative), and overlapping subsidies from other municipalities or public corporations are not permitted. The installation period is from April 1, 2025, to March 30, 2029, and a “Grant Application and Performance Report” must be submitted after a preliminary application.
Subsidy Rate and Amount
Subsidies for the installation costs of battery storage are provided at a fixed rate (per kWh). Instead of a percentage of the costs, a predetermined amount will be granted as the upper limit. Additionally, participating in demand response (DR) demonstrations will provide further benefits.
Battery storage package (new installation): The subsidy limit is 120,000 yen per 1 kWh of storage capacity. An additional 100,000 yen can be added for participation in DR demonstrations.
Expansion of battery units (additional to existing battery storage): Subsidies of up to 80,000 yen per 1 kWh are available, with the condition that a solar power system is already installed. Additional benefits for DR participation are also applicable.
Energy management devices and IoT-related devices: Participation in DR demonstrations is mandatory, and subsidies of up to half of the eligible expenses (maximum 100,000 yen) will be provided.
Please see here for more details!
Introduction of “Home Fuel Cell System (EneFarm)” in Machida City
Eligible Participants
The eligible participants for this subsidy program are those who are registered residents of Machida City. If you plan to move in, you can qualify by registering your residence at the address where the EneFarm is installed in Machida City by March 31, 2026 (deadline). Rental housing is not eligible, but exceptions can be made for those who install an EneFarm in their own home at a city address or for those who install an EneFarm during the 2024 fiscal year and move into that residence in the 2025 fiscal year.
Requirements
The eligible equipment for this program is the “EneFarm” registered with the Japan Fuel Cell Commercialization Conference. Additionally, since operational noise may occur, it is recommended to consult and adjust the installation method in consideration of the neighbors, following the guidelines in the handbook.
Subsidy Amount
The subsidy provided is a flat rate of 35,000 yen.
Solar Panel Installation & Battery Storage Price List
Self-Estimate and Profit Simulation for Solar Power Generation
With the simulator above,
you can obtain an estimated quote and a cash flow simulation for up to 30 years!
If you know the total capacity of solar panels installed on the roof and the capacity of the storage battery, you can get an estimated quote and cash flow simulation!
Customer Testimonials
Case Studies of Solar Panel Installations


| 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-made Sales / Aluminum Catch-type Hardware |
| Price Range |
| 2.2 million yen to 2.3 million yen *Due to the provision of subsidies, the actual burden amount is approximately 1 million yen Estimated time for recovering 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 expect. |
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 identified the expected amount of subsidies, which we explained to the customer along with the estimate!
How to Choose a Solar Panel Installation Contractor in Machida, Tokyo
There are many solar panel installation contractors available in Machida, Tokyo, 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 check the following 4 points.
● Have extensive knowledge not only about solar panels but also about roofs
● Confirm the presence of warranties and aftercare services
● Obtain estimates from multiple contractors (at least 3 companies)
● Check if 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 panels within a few years..
・Misjudgment of the type of waterproofing led to incorrect treatment and subsequent 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.
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, also confirm whether there is a construction warranty in case leaks occur after installation!
If the contractor offers a warranty period, they will respond free of charge in case of leaks after installation.
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 damages on the roof may not be visible, you might not notice them yourself. Regular aftercare inspections can help detect issues early, preventing major repairs or failures!
Kakeru Koumuten Co., Ltd. offers a leak warranty as part of the construction warranty for solar panel installations. We also provide aftercare services and send out annual DM reminders!
After reviewing the DM, if you wish, we will arrange to visit for aftercare services!
Obtain estimates from multiple contractors (at least 3 companies)
When requesting solar panel installation, be sure to obtain estimates from multiple contractors.
Even if the same manufacturer is used for the same type of work, costs may vary, as well as warranties and after-sales services.
Additionally, obtaining multiple estimates makes it easier to negotiate prices.
To request your desired repair contractor at a lower cost, 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 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 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 Benefits
The biggest advantage of installing solar panels is the economic benefit!
Although the selling price of electricity has decreased compared to ten years ago, due to rising electricity costs, you can benefit by consuming the electricity you generate! Electricity prices 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: You can utilize subsidies!
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 mitigating global warming by reducing carbon dioxide emissions and dependence on fossil fuels.
Since there is no noise or harmful substance emissions during the power generation process, it is considered an environmentally friendly method of generating electricity.
Benefit 4 Improved Insulation Effect!!
By installing it on the roof or rooftop, insulation performance is improved.
Especially in summer, it can effectively block direct sunlight, providing significant heat insulation benefits!
Benefit 5 Electricity can be used even during power outages!!
By installing a storage battery, it becomes possible to use electricity even during emergencies like 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 renovations 10 to 20 years later, there will be costs for removing and reattaching 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 consider maintenance costs in advance and request a simulation 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.
How to Choose Solar Panels?
There are many manufacturers of solar panels, and their output (power generation) and costs vary.
It is not the case that “this manufacturer has the best solar panels”; rather, 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 Roof Power Generation
When installing solar panels on the roof, it is crucial to consider how much power can be generated within 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 output panel and a 400W output panel may seem at first glance that the higher output panel is better.
However, if the size of the panels does not fit well on the roof, it may be the case that “20 panels of 350W can be installed” while “only 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 roof power output)
350W × 20 panels = 7kW (total roof power output)
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, meaning 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 avoid regrets when choosing solar panels!
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 output warranties, 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 Machida City, Tokyo, 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 Machida City, Tokyo.
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 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 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 such as partial repairs and rain gutter cleaning!
In case of emergencies like leak repairs or situations where temporary measures can be taken without scaffolding, please consult us!
“I want to know about 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 shoes and propose the best construction plans!
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 our company is found to be inferior to others, you are free to decline!
Features of Machida City, Tokyo
Machida City is located at the southern tip of Tokyo and is a vibrant city rich in nature, adjacent to Kanagawa Prefecture. The city features hilly terrain, where abundant greenery coexists with urban functions, making it a popular area to live.
The climate is relatively mild, allowing residents to enjoy the changing seasons. In spring, beautiful cherry blossoms bloom at Yakushi Pond Park and the Ridge Greenway, while autumn brings colorful foliage throughout the city.
Transportation access is excellent, with the Odakyu Line, JR Yokohama Line, and Tokyu Den-en-toshi Line available, providing very convenient access to central areas like Shinjuku, Shibuya, and Yokohama. Especially around Machida Station, there are large commercial facilities and restaurants, bustling with many people.
Popular tourist spots include “Machida Yakushi Pond Park Shikisai no Mori,” which is home to historical buildings of Japan, “Machida Squirrel Garden,” where you can interact with nature, and “Minami Machida Granberry Park,” where you can enjoy outlet shopping. Additionally, we recommend exploring the various cafes and shops scattered throughout the city.
Our company handles many exterior construction and solar power projects in Machida City, Tokyo.
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 issues!
Service Areas in Machida City, Tokyo
Kakeru Koumuten Co., Ltd. accepts requests throughout Kanagawa Prefecture and all of Tokyo.
List of Areas in Machida City, Tokyo
Aihara-cho, Machida City / Asahi-cho, Machida City / Okura-cho, Machida City / Ogawa, Machida City / Onoji-cho, Machida City / Koyamagahara, Machida City / Koyamada Sakuradai, Machida City / Koyama-cho, Machida City / Kanai, Machida City / Kanai Gakuen, Machida City / Kanai-cho, Machida City / Kanamori, Machida City / Kanamori Higashi, Machida City / Kamikoyamada-cho, Machida City / Kiso Nishi, Machida City / Kiso Higashi, Machida City / Kiso-cho, Machida City / Takagasaka-cho, Machida City / Shimokoyamada-cho, Machida City / Makoji, Machida City / Makoji-cho, Machida City / Zushi-cho, Machida City / Chuo, Machida City / Tamagawa Gakuen, Machida City / Tsukushino, Machida City / Tsurukawa, Machida City / Tsuruma, Machida City / Tokiwacho, Machida City / Nakacho, Machida City / Naruse, Machida City / Narusegaoka, Machida City / Narusedai, Machida City / Nishinaruse, Machida City / Negishi, Machida City / Negishi-cho, Machida City / Nōgatani, Machida City / Nodzuta-cho, Machida City / Hara Machida, Machida City / Higashi Tamagawa Gakuen, Machida City / Hirohakamada, Machida City / Hirohakamada-cho, Machida City / Fujinodai, Machida City / Hon Machida, Machida City / Minami Otani, Machida City / Minami Tsukushino, Machida City / Minami Naruse, Machida City / Minami Machida, Machida City / Miwa-cho, Machida City / Miwa Midoriyama, Machida City / Morino, Machida City / Yakushidai, Machida City / Yabemachi, Machida City / Yamazaki, Machida City / Yamazaki-cho, Machida City
・Trust Kakeru Koumuten for exterior wall painting in Machida, Tokyo!
・Trust Kakeru Koumuten for roof renovations in Machida, Tokyo!
・Trust Kakeru Koumuten for exterior renovations in Machida, Tokyo!
・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 manufacturers! Features and selection tips included!
・What are the installation costs for solar power? Comprehensive tips to reduce costs!
・Where is the best place to install solar power? Key points for site selection!
・Check out our solar power estimate here!
We welcome consultations via LINE as well◎
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!







