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E&E Solutions Inc.
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Business Description

Support for Renewable Energy Introduction

Since the 1980s, our company has been providing a wide range of services related to the introduction of renewable energy. With our wealth of experience, proven track record, and technical expertise, we offer technical due diligence services to support the implementation of various renewable energy projects.
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Markets and Trends

In addition to being one of the most effective measures against global warming, the adoption of renewable energy is becoming increasingly important and demand due to various benefits, such as enabling the use of energy sources that can be produced within the country without relying on imports and supporting the development of independent power supplies. While there are challenges such as limitations related to grid connection due to the variable nature of renewable energy, environmental impacts, and a decrease in suitable sites for power plant construction, further expansion of renewable energy is strongly anticipated in the years ahead.

SERVICE

01Energy Yield Assessments, Feasibility Studies (FS)02Technical due diligence services, checks during construction/post-completion checks, performance verification (at completion and after the Commercial Operation)03Repowering/Replacement-Related Services
01
Energy Yield Assessments, Feasibility Studies (FS)
In the renewable-energy business, the success of any project hinges on how accurately future power output can be forecast for each individual plant.
We have been involved in energy-yield forecasting for wind farms since the early 1990s, when commercial wind power first took root in Japan, and we extended our services to solar PV facilities after the Feed-in Tariff (FIT) program began in 2012.
Wind power
By employing a suite of advanced tools—including state-of-the-art models such as MASCOT and WRF—and drawing on decades of field experience, we deliver highly accurate generation forecasts. Our support goes beyond prediction: we provide end-to-end guidance on turbine siting, plant layout, capacity optimization, and equipment selection.
Solar power
For PV solar power projects, we use a proprietary modeling platform that able to factors in complex terrain, tree shading, snowfall and snow cover, enabling precise production forecasts even under complex conditions.
Service Examples
Energy Yield Assessments for PV power facilities (both new and existing facilities)
Energy Yield Assessments for wind power facilities (both new and existing facilities)
Energy Yield Assessments for various renewable energy facilities (including hybrid power systems)
02
Technical due diligence services, checks during construction/post-completion checks, performance verification
(at completion and after the Commercial Operation)
It takes a considerable amount of time to get a renewable energy project off the ground. Moreover, the length of power purchase agreements is generally around 20 years. These factors mean that the time between the structuring of project finance and the completion of repayment is quite long.
As a technical consultancy, we deliver engineering services that span the entire lifecycle of power-generation projects.
Service Examples
Before financial close (Stage 1)
Conduct a third-party technical and environmental risk assessment of the business plan to verify project feasibility.
During construction (Stage 2)
Monitor construction progress and evaluate the validity of any design or work-scope changes.
At completion (Stage 3)
Confirm mechanical completion and performance testing to ensure the plant can operate safely as designed.
After commercial operation begins (Stage 4)
Verify operating performance, assess generation records, review periodic inspection reports, and provide troubleshooting support.
Due Diligence
In Japanese, “Due Diligence” is typically translated as “baishu shinsa (買収審査).” When undertaking mergers or acquisitions (M&A), it is essential to conduct thorough investigations of the target company or project to determine the acquisition price and develop an appropriate scheme. Due diligence refers to the various evaluation and review processes required for this purpose.
In the field of power generation, technical due diligence involves assessing whether the project is planned and executed based on sound technologies and evaluating the technical foundations supporting the business. Not only for acquisition targets, but also for new development projects, we use the term “due diligence” to refer to the process of evaluating and reviewing the appropriateness and safety of the business from a technical perspective.
03
Repowering/Replacement-Related Services
Wind farms built in the 1990s and 2000s and the PV solar power plants commissioned in the early years of Japan’s FIT program are now approaching a decade or more of operation. Therefore, owners are actively weighing reinvestment options such as equipment replacement and full-scale repowering.
To support clients considering these upgrades, we deliver a one-stop technical services—including energy-yield forecasting, technical due diligence, and environmental impact assessments—providing comprehensive guidance for well-informed investment decisions.
Wind power plant
For wind projects, replacing existing turbines with new high-efficiency models not only improves energy output and profitability, but also helps to contain development costs and reduce project risks.
Solar power plant
In the solar power plant, installing next-generation PV modules and power conditioning systems (PCS) promises higher electricity sales and lower maintenance expenses.
Service Examples
Power generation prediction for replacement, technical due diligence
Environmental impact assessment for replacement (including voluntary assessment)
Technical due diligence for repowering projects
See related Service Examples
OTHER CONTENTS
Support for Renewable Energy Introduction
Environmental Assessments
Due Diligence for Mergers and Acquisitions (M&A), etc.
Support for Environmental/Social Consideration in Investment and Financing (Response to the Equator Principles, etc.)

 

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Please feel free to make inquiries by telephone or email.
+81 (0)3 6328 0080Inquiries are accepted between 10:00 am and 5:30 pm, Monday to Friday
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