This law imposes an obligation on retail electricity providers above a certain size to procure non-fossil certificates in proportion to the amount of their sales.

An international initiative led by institutional investors to encourage listed companies with high greenhouse gas emissions to take stronger action on climate change.
Established in February 2017, the initiative now includes participation from over 600* investors.
*As of March 2025

A type of electricity purchase agreement under a Virtual Power Purchase Agreement (Virtual PPA), where the settlement is based on the difference between the contract price (strike price) and the market price.

ESG stands for Environmental, Social, and Governance — the three key areas where companies are expected to take action to help build a sustainable society.
transparent and ethical corporate governance.

Abbreviation for “feed-in premium,” a system to promote the introduction of renewable energy by adding a certain premium (subsidy) to the price at which electricity is sold on the wholesale market by renewable energy power producers.

A type of electricity purchase agreement under a Virtual Power Purchase Agreement (Virtual PPA), where the settlement is made at a fixed price that remains unchanged throughout the contract period.

A contract that stipulates, among other conditions, that electricity procured by a retail electricity provider or other contracting party will be delivered to electricity users via the grid of a transmission and distribution system operator in proportion to the amount of electricity used.

"Non-fossil value, which is part of the environmental value of non-fossil fuel power sources such as renewable energy, is extracted and converted into the form of certificates that can be sold and traded.
Non-fossil certificates that track information on the attributes of the generating facility are also recognized by RE100."

A contractual arrangement between a provider of renewable energy power sources and a purchaser of electricity, in which renewable energy power generated at a location remote from the place of demand (off-site) is supplied to the purchaser via the general power grid.

The system of “output curtailment” aims to maintain a balance between electricity demand and supply by restraining the output of renewable energy power plants, based on instructions from general electricity distribution operators.

An agreement in which the electricity consumer purchases both renewable electricity and its associated environmental value (non-fossil certificates) as a bundled package.
It offers the advantage of predictable electricity pricing, making it easier to formulate business and budget plans.

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A balancing group is a group of businesses that serves as the settlement unit for imbalances under the balancing system. A balancing group made up of power generators is called a generation balancing group.

A contract that stipulates, among other conditions, that the contracting power provider will supply electricity in accordance with a plan that has been submitted in advance to a transmission and distribution system operator.

This refers to the condition where the amount of electricity generated and the amount consumed are exactly the same at the same time.
In power systems, it is essential that supply and demand are always balanced. To achieve this, real-time adjustments are continuously made to ensure that electricity generation matches consumption.

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This subsidy available to power generation operators who obtain FIP certification and integrate battery storage with renewable energy facilities, starting from the revised budget from 2022.

This subsidy, which began with the FY2021 supplementary budget, is provided to power generation companies that install and introduce new solar power generation equipment to supply electricity to specific customers.
In FY2023, it was implemented under the name of “Consumer-led Solar Power Generation Introduction Promotion Project.”

An agreement in which the electricity consumer purchases only the environmental value of renewable energy (non-fossil certificates), without the physical supply of electricity.
It enables the adoption of renewable energy while maintaining existing electricity supply contracts.

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A project that promotes the use of carbon-free electricity across all hours of the day, seven days a week.
This initiative was newly launched by the nonprofit organization that operates “RE100,” with the goal of accelerating the decarbonization of electricity systems worldwide.