About APX TIGRs
What is APX TIGR?
APX created the Tradable Instrument for Global Renewables (TIGR) Registry as an online platform for tracking and transferring Renewable Energy Certificates (RECs), enabling developers to generate, verify, and sell RECs. RECs represent all environmental attributes of one megawatt-hour (MWh) of electricity generated from renewable sources, allowing companies to demonstrate their sustainability achievements in a tangible and verifiable way.
As the global demand for renewable energy continues to rise, more corporate and industrial energy consumers are turning to internationally recognised platforms to meet their renewable energy goals. The TIGR Registry answers this need by offering verified issuance, transfer, and retirement of RECs, reinforcing accountability and trust in renewable energy procurement.
For organisations looking to procure renewable energy, the TIGR platform provides a trusted, globally accepted mechanism for sourcing verified RECs from renewable energy projects.
In addition to its global reach, APX provides full-service REC creation, management, and transactions across North America. The organisation has supported the growth of renewable energy markets through trusted tracking solutions for over 20 years. As a leader in both voluntary and compliance REC systems, APX operates two established platforms: the North American Renewables Registry (NAR) and the Tradable Instrument for Global Renewables (TIGR). NAR supports REC tracking in the United States and Canada, while TIGR extends this infrastructure internationally, including markets across Asia, Latin America, and other developing regions. These platforms offer comprehensive coverage that helps ensure REC integrity, market connectivity, and transparency in clean energy tracking across borders.
How Does APX TIGR Work?
The APX TIGR Registry enables you to source RECs from anywhere outside of North America while seamlessly managing all assets on a single online portal. The Registry manages the entire lifecycle of Renewable Energy Certificates, from renewable project registration, to the issuance, transfer, and retirement of RECs.
The infographic below shows how the APX TIGR system works, from project registration through to REC retirement, offering a simplified view of global REC tracking in action.
Benefits of Using the TIGR Registry
The TIGR Registry is a trusted global platform for managing and verifying Renewable Energy Certificates (RECs), helping companies meet corporate sustainability goals with transparency and credibility.
1. Built for Corporate Sustainability & Scope 2 Reporting
The TIGR Registry is designed to meet RE100 and CDP standards, supporting accurate Scope 2 emissions tracking. It enables companies to report progress against Science Based Targets.
2. Globally Recognised & Independently Verified
TIGRs are independently reported and verified through local legal frameworks and country-specific validation processes. This ensures high standards for renewable energy projects and prevents double-counting of RECs and carbon credits.
3. Secure, Transparent REC Management
The platform provides corporate buyers and energy project owners with full traceability of environmental attributes. Every REC is tracked from generation to retirement, with real-time visibility through a secure, private portal.
4. One Registry, Global Reach
With coverage in over 40 countries and support for over 1,500 projects, the TIGR Registry allows companies to manage renewable energy usage across multiple geographies—consolidating procurement, reporting, and environmental claims in one place.
5. Optimised for All REC Transactions
TIGRs supports all types of renewable energy transactions, including bundled and unbundled purchases, PPAs, on-site generation, and energy attribute-only claims. This flexibility makes it ideal for companies with complex renewable strategies.
6. Avoid Double-Counting with Confidence
As the only global registry purpose-built to avoid REC and carbon credit double issuance, TIGR uses robust checks against FITs, subsidies, and other incentives to ensure each REC represents one megawatt-hour (MWh) of verified green power.
7. API Integration & Custom Tools
The TIGR Registry offers APIs and tailored account types for corporate buyers, brokers, and project developers, allowing seamless integration with internal systems, sustainability reporting tools, and automated verification.
Work with APX’s Trusted Partner in Asia - REDEX
REDEX is proud to partner with APX to accelerate the adoption of renewable energy solutions across Asia, with a strong focus on the Singapore market. As APX’s official and trusted partner in the region, REDEX offers REHash, a robust digital Renewable Energy Certificate (REC) trading platform built to simplify and streamline the full REC lifecycle.
REHash empowers businesses, project developers, and renewable energy suppliers to buy, sell, and retire RECs with confidence. The platform supports every critical stage of REC activity, including renewable asset registration, certificate issuance and verification, marketplace listing, seamless transactions, and transparent retirement tracking—all on one centralised platform.
Whether you are a corporate sustainability leader, an energy retailer, or a renewable energy project developer, REHash offers a reliable and user-friendly solution to participate in the REC ecosystem. Designed for efficiency, compliance, and credibility, REHash is your gateway to the growing REC market in Singapore and across the region.
Ready to take the next step? Sign up here to start your journey with REDEX and leverage our all-in-one platform to achieve your sustainability goals and contribute to a greener future through verified renewable energy trading.
Frequently Asked Questions About APX’s TIGR
How does the TIGR Registry ensure the credibility of RECs, and is it recognised internationally by sustainability initiatives?
The TIGR Registry ensures the credibility of Renewable Energy Certificates (RECs) through a robust auditing and verification process that aligns with internationally accepted environmental and energy standards. Each REC issued via TIGR represents 1 megawatt-hour (MWh) of renewable energy that has been independently verified by APX, providing buyers in the voluntary market with full transparency, traceability, and trustworthiness.
To further support corporate sustainability claims, the TIGR Registry is officially recognised by leading global renewable energy and ESG reporting frameworks, including RE100 and CDP. This means that organisations using RECs issued through TIGR can credibly report renewable energy usage in line with international REC standards and meet their corporate sustainability initiatives with confidence.
Who should register with the TIGR Registry?
The TIGR Registry is ideal for corporate buyers, renewable energy retailers, and project developers involved in the voluntary renewable energy market. Corporates use the platform to support their sustainability goals by purchasing and retiring credible Renewable Energy Certificates (RECs), while retailers manage RECs on behalf of clients. Project developers register their renewable energy assets to issue RECs and connect with potential buyers, investors, and lenders.
How does the TIGR Registry support REC issuance and tracking?
The TIGR Registry plays a pivotal role in supporting REC issuance and tracking by providing a centralised and secure digital platform for recording and managing RECs. The platform helps streamline the issuance process, ensuring accurate and reliable tracking of RECs throughout their lifecycle.
What are the fees associated with using the TIGR Registry?
The TIGR Registry has a transparent fee schedule, which includes registration fees, issuance fees per REC, and optional service charges. The most updated fee structure is published on the APX TIGR website and may vary depending on project type and volume.
What can an account with APX TIGR Registry do?
An APX TIGR Registry account provides users with an online platform to track and transfer Renewable Energy Certificates (RECs), allowing developers to generate, verify, and sell RECs.
Can a Retirement Certificate in TIGR be amended once requested?
Once a Retirement Certificate is requested in TIGR, it typically cannot be amended, meaning you can no longer move or transfer it out of the Retirement Sub-account. This process is designed to maintain the integrity and transparency of the REC retirement system. That way, retired RECs can no longer be transferable to another party.
