What is a Self-Consumption Solar Power System?

Topic Service

A self-consumption solar power system involves installing solar panels on the rooftops of buildings such as offices, factories, or commercial facilities, and using all the electricity generated on-site.
By reducing the amount of electricity purchased from the grid and utilizing cheaper, self-generated power, businesses can significantly lower their electricity costs.

Social Background

Globally, efforts to reduce greenhouse gas emissions are accelerating, drawing increasing attention to initiatives such as ESG (Environmental, Social, and Governance) investment and the Sustainable Development Goals (SDGs). In Japan, the government declared its commitment to achieving carbon neutrality by 2050 in October 2020. Subsequently, the revised Act on Promotion of Global Warming Countermeasures was enacted in May 2021, officially establishing the realization of a decarbonized society by 2050 as a national policy.
At the same time, companies are being called upon to respond to rising electricity prices and strengthen business continuity planning (BCP) by introducing battery storage systems.

Decarbonized Management

ESG Investment

SDGs

Rising Electricity Costs

BCP Measures

※We also support the use of subsidies, tax incentives, and compliance with the Factory Location Act.

Benefits of Implementation

We propose the introduction of self-consumption solar power systems that utilize clean electricity generated from renewable energy sources. These systems enable both CO₂ emissions reduction and lower electricity costs. Additionally, they can supply power during outages, supporting your BCP (Business Continuity Planning) efforts.

CO₂ Reduction

Electricity Cost Savings

BCP Support

Intellect’s Self-Consumption Solar Power Solution

1.We provide more than just construction estimates—we develop optimal schemes and layouts, and propose investment effect analyses and long-term performance simulations.

2.We leverage our experience and expertise gained through the development, construction, and operation of approximately 70 solar power plants across Japan.

3.As an independent company, we are able to recommend the most suitable manufacturers and systems for panels, power conditioners, and battery storage.

4.In addition to our in-house solar power expertise, our architectural engineers assess structural safety and waterproofing.

5.With our experience in facility operations, we offer installation plans optimized for existing rooftops with minimal impact on ongoing operations.

6.Alongside solar system implementation, we can also propose improvements in facility management and reductions in long-term building maintenance costs.

	現在の電力使用状況を基に、発電システムの最適容量を算出し、発電量、設備導入効果等をシュミレーションします。
	シュミレーションした発電システムが、現地に問題なく設置できるか、詳細調査を行います。
	現地詳細調査を基に発電システムの導入金額を確定し、工事請負契約を締結します。
	建物を運営しまがらの工事となるため、管理会社と打合せを行いながら工事を進めます。
	適切なオペレーション＆メンテナンスを行い、適切な発電量を確保します。

(*1)建物形状や発電システムの容量により前後します。

Overview of Self-Consumption Solar Power Systems

Main Components of a Self-Consumption Solar Power System

Implementation Process

Process for Introducing a Self-Consumption Solar Power System


We calculate the optimal system size based on your current electricity usage and simulate power generation and expected benefits from system installation.	We conduct a detailed survey to confirm that the proposed system can be installed without issue at your location.	Based on the site survey results, we finalize the system cost and sign a construction agreement.	Since installation takes place during facility operation, we coordinate with building management to proceed with construction smoothly.	We begin operation with proper O&M (operation & maintenance) to ensure stable and optimal power generation.

※o create the simulation, we ask for relevant documents such as building plans and electricity usage records.
※ The construction period may vary depending on the project details.

Key Considerations from Planning to Construction and Maintenance

1.We design the optimal panel layout and estimate the system capacity and expected power generation.

2.A long-term simulation is provided to support decision-making, including investment costs, O&M expenses, equipment replacement costs, and expected reductions in CO₂ emissions and electricity expenses.

3.We conduct structural assessments to verify load capacity and ensure stability against strong winds to prevent panel detachment.

4.The waterproof condition of the rooftop is checked, and the most suitable installation method is determined.

5.We offer a comprehensive O&M (Operation & Maintenance) plan, including performance monitoring, early detection and resolution of issues, and troubleshooting after the system begins operation.

Various Solar Power System Initiatives

We propose the most suitable and effective schemes tailored to each customer’s specific needs.

Battery Storage System Deployment

We plan and propose battery storage systems tailored to your needs, considering your objectives and budget. Together, we define the purpose of installation, the target facilities, and the regions through thorough consultation.

Self-Consignment Model

Electricity generated in remote locations is delivered to consumption sites via the power grid. We formulate schemes and plans that ensure supply-demand balance.

Off-Site PPA

In this model, renewable energy systems are installed in remote locations and the electricity is supplied to the demand site. We support the entire process from scheme structuring to planning, design, construction, and management.

Solar Carports

We offer solar-powered carports designed for commercial and industrial facilities. Each unit can accommodate four vehicles and is connectable. With a cantilevered structure that balances design and functionality, EV chargers and battery storage systems can also be integrated to prepare for the spread of electric vehicles.

Solar Power Installation Consulting

We support the full process from feasibility studies on self-investment or PPA via roof leasing, to actual installation. For projects with multiple sites, we also conduct potential assessments and create roadmaps for implementation.

Contact Us

Please feel free to reach out to us by email or phone.