Gardenia’s automated solution eliminates the need for manual emissions calculations. The OHI team now has one place to easily see their GHG inventory and Client Selected KPIs daily, and can use this data to track the impact of their climate initiatives.

Customer Selected KPIs

Here are some examples of KPIs the OHI team tracks through the Gardenia dashboard:

• Aviation Fuel Consumed
• Passengers (by leg and by flight)
• Weight (Pax/Baggage/Cargo)
• RPK (Revenue Passenger Kilometers)
• RTK (Revenue Ton Kilometer)
• Various Flight Hours Related
• Metrics

Each industry and business has unique KPIs that are most relevant to their emissions tracking and intensity calculations. So alongside our clients' core GHG inventory, we set up custom set of KPIs.

A key challenge in aviation emissions tracking is calculating Revenue Ton Kilometer (RTK) metrics and Revenue Passenger Kilometers (RPK), which require complex calculations combining passenger numbers, cargo weight, and distance traveled for each flight leg. Gardenia automates these calculations, providing OHI with granular insights to inform their emissions reduction strategy.

For their 2024 CDP report, OHI needed to respond to 138 questions across multiple modules. Gardenia's Report GenAI tool automatically generated 97% of responses, with 70% requiring no edits. The platform reduced reporting time from one month to one week, while improving response quality and consistency.

Questionnaires for major frameworks have been developed and can be loaded to the platform directly. If a new standard or a custom questionnaire is required, it can be uploaded to the tool.

Knowledge Base Integration

Next, company-specific data and documents are provided to the Report GenAI tool. The tool can source data from: direct queries against our clients’ calculated emissions database, internal documents (see “Client Inputs” section), as well as internet searches for public information.

Pre-fill, Review, Submit

The Report GenAI tool generates “first-pass” responses to all questions. The user can review the answers, with the ability to view the references, and chat with the AI Assistant to iterate on answers. The user can choose when the answer is ‘approved’ and click ‘submit’ to answer the question.

While not all sources are required, more comprehensive data improves initial coverage of questions answered by the AI. These are the key inputs shared by the client for the reporting knowledge base.

Example inputs: 

• Carbon Emissions Inventory
• Company Policies (e.g. Climate Change Policy, Net Zero Goals)
• Prior Reports (e.g. prior CDP submissions, Group’s Sustainability Report)
• Analyses (e.g. Risk Assessments, Materiality Assessments)

• Scalable: Able to ingest and process hundreds of thousands of records in minutes
• Secure: Compliant with ISO 27001 and GHG Protocol data governance standards
• Interoperable: Easily integrated with OHI's systems
• Future-proof: Prepared for upcoming CSRD, TCFD, and SEC reporting frameworks

Here's a look at the data architecture powering the reporting module used by OHI:

Security:
In the setup phase, the Report GenAI agent is configured and authorized to access ESG and emissions databases, client document stores (emails, prior reports, datasheets), and public web searches. All client data resides in encrypted Amazon S3 buckets (with VPC endpoints), and relational data in Amazon RDS—both within Gardenia’s private AWS cloud. This ensures robust data residency, private network access, and strict identity/access controls using AWS IAM and Cognito.

Scalability:
The Report GenAI frontend is hosted as a containerized application, managed by load-balanced and auto-scaled Amazon ECS with Fargate. This setup ensures the platform remains responsive during peak periods and operates resource-efficiently throughout the year.  

Accuracy:
Gardenia’s agentic reasoning engine leverages the ReAct framework with leading generative models (via Amazon Bedrock) to break down complex queries, retrieve relevant internal/external data, and iteratively refine answers. Hosted on AWS Lambda and integrated through LangChain, this system can orchestrate tailored data queries and structured analysis. Text-to-SQL tools generate compliant analytical queries, and RAG-based engines (using Faiss plus Bedrock embeddings) retrieve and reason over unstructured enterprise documents.

Transparency

Every answer from Report GenAI is cited and auditable, with validation at two levels:

• Human-in-the-loop: ESG experts can review and modify AI-generated responses, verifying factual accuracy and compliance within an interactive chat interface.
• AI-powered assessment: Advanced LLMs on Amazon Bedrock review and score each answer for accuracy, completeness, and framework alignment, flagging any that may require additional review.

This dual-validation system, with transparent reasoning traces and documented corrections, underpins a strong quality management framework that continually improves via feedback.

With Gardenia, the OHI team can continue to advance on their ambitious climate goals. OHI now has a centralised and live view of its GHG inventory and Selected Client KPIs, making it simple to monitor progress in a systematic way. OHI has an efficient reporting process using Gardenia’s Report GenAI tool. Their CDP submission demonstrated the power of automation - 97% of questions were answered automatically by the tool, with 70% of these being approved without any modifications. For the rest, the OHI team used the AI chatbot to assist with drafting and editing. This transformed a month-long process into a focused week of review.

Going forward, OHI plans to expand their use of Gardenia's capabilities to:

• Monitor Sustainability Performance: OHI will continue using Gardenia's platform to track emissions daily across their global operations.
• Simulate Reduction Strategies: The team plans to use Gardenia's Reduction Strategies Dashboards to explore different reduction pathways.
• Expand Reporting: Beyond CDP, OHI plans to report with frameworks such as CSRD. Gardenia's AI reporting assistant will help streamline these new requirements.

By partnering with Gardenia and AWS, OHI has turned ESG reporting into an engine for innovation—supported by a secure, accurate, and scalable technology foundation.