Kokusai Kogyo's 'Enegaeru Biz' Transforms Kyoshin Koken's Sales Structure
Kyoshin Koken introduced Kokusai Kogyo's solar simulation tool 'Enegaeru Biz,' drastically reducing proposal lead times and generating over 1,000 projects annually with zero ad spend.
📋 Article Processing Timeline
- 📰 Published: April 10, 2026 at 19:10
- 🔍 Collected: April 11, 2026 at 00:27 (5h 17m after Published)
- 🤖 AI Analyzed: April 20, 2026 at 03:16 (218h 48m after Collected)
We are pleased to announce that 'Enegaeru Biz', an economic effect simulator for industrial self-consumption solar and storage batteries provided by Kokusai Kogyo Co., Ltd. (Headquarters: Shinjuku-ku, Tokyo, CEO: Kyo Fujiwara, hereinafter 'Kokusai Kogyo'), has been adopted by Kyoshin Koken Co., Ltd. (Headquarters: Inazawa City, Aichi Prefecture, CEO: Makoto Aihara, hereinafter 'Kyoshin Koken'), which handles the sales and construction of solar power and storage batteries based in Aichi Prefecture. Over the three years since its implementation, they have successfully achieved 'the creation of over 1,000 projects annually with zero advertising costs' and 'a significant reduction in proposal lead times,' realizing a fundamental transformation in their sales structure.
## Background and Resolved Issues
Before the implementation, Kyoshin Koken faced the following three challenges:
Prolonged Lead Times
Because they relied on manufacturers and trading companies for trial calculations and simulations of industrial self-consumption solar power, it took 1 to 1.5 months to make an initial proposal.
The Wall of Data
In the early stages of sales, obtaining 30-minute demand values (electricity usage data) was difficult in over 60% of cases, causing the proposals themselves to stall.
Loss from Re-proposals
In numbers-based negotiations, such as fine-tuning the overloading ratio or optimal panel capacity, a loss of 1 to 1.5 months occurred each time a 'counter-proposal' was requested by the client (executive).
## Main Effects of Introducing 'Enegaeru Biz'
Through the introduction of 'Enegaeru Biz' and the construction of their own unique operational scheme utilizing the system, they achieved the following results.
1. Lead time for proposals drastically reduced from '1 to 1.5 months' to '1 week'
Established a two-stage proposal method: a 'speedy initial proposal (same day)' using a custom-made spreadsheet, and a 'precise formal proposal (about 1 week after obtaining demand data)' using Enegaeru Biz. This eliminated stalls in proposals and enabled swift approaches to clients.
2. Created over 1,000 projects annually with zero advertising costs
Gained trust from partners with swift and precise proposal capabilities, leading to 80-90% of projects coming via referrals from partners. A system was put in place where partners handle appointment setting, building a structure to execute 140 simulations monthly and over 1,000 annually with zero advertising costs.
3. Proven simulation with over 95% prediction accuracy
As a result of comparing predicted values from Enegaeru Biz with actual values in projects operating for over a year, the deviation of actual performance against predictions fell within ±5%, indicating extremely high accuracy. Presenting this data to clients enhances the reliability of proposals to the management level and contributes to an improved closing rate.
4. Built a system where a new hire of 2 months can handle 'executive-level proposals'
By preparing operational manuals, even a new employee who joined two months ago can create materials for industrial self-consumption proposals aimed at executives, which typically require advanced specialized knowledge. They broke away from an individualized sales structure and established a system to maintain and mass-produce proposal quality as an organization.
■Comment from Mr. Ichikawa, Managing Director of Kyoshin Koken Co., Ltd.:
'With Enegaeru Biz, we were able to build a system where we can quickly conduct accurate simulations in-house. In order to support our partners in acquiring orders, being able to perform simulations on the spot...'
## Background and Resolved Issues
Before the implementation, Kyoshin Koken faced the following three challenges:
Prolonged Lead Times
Because they relied on manufacturers and trading companies for trial calculations and simulations of industrial self-consumption solar power, it took 1 to 1.5 months to make an initial proposal.
The Wall of Data
In the early stages of sales, obtaining 30-minute demand values (electricity usage data) was difficult in over 60% of cases, causing the proposals themselves to stall.
Loss from Re-proposals
In numbers-based negotiations, such as fine-tuning the overloading ratio or optimal panel capacity, a loss of 1 to 1.5 months occurred each time a 'counter-proposal' was requested by the client (executive).
## Main Effects of Introducing 'Enegaeru Biz'
Through the introduction of 'Enegaeru Biz' and the construction of their own unique operational scheme utilizing the system, they achieved the following results.
1. Lead time for proposals drastically reduced from '1 to 1.5 months' to '1 week'
Established a two-stage proposal method: a 'speedy initial proposal (same day)' using a custom-made spreadsheet, and a 'precise formal proposal (about 1 week after obtaining demand data)' using Enegaeru Biz. This eliminated stalls in proposals and enabled swift approaches to clients.
2. Created over 1,000 projects annually with zero advertising costs
Gained trust from partners with swift and precise proposal capabilities, leading to 80-90% of projects coming via referrals from partners. A system was put in place where partners handle appointment setting, building a structure to execute 140 simulations monthly and over 1,000 annually with zero advertising costs.
3. Proven simulation with over 95% prediction accuracy
As a result of comparing predicted values from Enegaeru Biz with actual values in projects operating for over a year, the deviation of actual performance against predictions fell within ±5%, indicating extremely high accuracy. Presenting this data to clients enhances the reliability of proposals to the management level and contributes to an improved closing rate.
4. Built a system where a new hire of 2 months can handle 'executive-level proposals'
By preparing operational manuals, even a new employee who joined two months ago can create materials for industrial self-consumption proposals aimed at executives, which typically require advanced specialized knowledge. They broke away from an individualized sales structure and established a system to maintain and mass-produce proposal quality as an organization.
■Comment from Mr. Ichikawa, Managing Director of Kyoshin Koken Co., Ltd.:
'With Enegaeru Biz, we were able to build a system where we can quickly conduct accurate simulations in-house. In order to support our partners in acquiring orders, being able to perform simulations on the spot...'