Callisto are the largest provider of regulated data flow management to energy suppliers, providing industry regulated accredited services. We have an experienced team of 200 people, including known industry experts who are active in the review and design of future industry solutions. This allows us to monitor the continuous market changes that affect our clients and our systems.


Callisto invests heavily into advanced technologies, which facilitates the most innovative solutions in the market to energy and gas retailers. We manage in excess of 43 million records across a range of services, providing industry expertise and data insight for more than 30 clients.

Experts in settlement performance - since our market inception, we’ve consistently demonstrated an exemplary record, with a robust settlment process that compliments our customers best practice for customer services and billing.

Ensuring data security is at the core of our operations. We ensure the integrity and security of customer information by designing security into our systems and processes. This is further supported through the use of secure data centres. 

Our Data Management services are delivered with a comprehensive quality assurance commitment. Business management processes are certified to ISO 9001 and information security management systems are certified to ISO 27001 providing complete security assurance.


Key Services Include:

NHHDC/DA - Non Half Hourly Data Collection and Data Aggregation

NHHMoA - Non Half Hourly Meter Operations

MAM - Gas Meter Asset Data Flow Management

Meter Asset Provider (MAP) Data Flow Services

Smart Data Retrieval

Gas Portfolio Management

HHDC/DA - Half Hourly Data Collection and Data Aggregation