Trans Alta is one of Canada's largest publicly traded power generators, operating wind, solar, hydro, and natural gas facilities across North America. Their C-suite depended on BI reporting for critical operational and strategic decisions — but the BI infrastructure had become a serious bottleneck.
Critical reports were taking 40–50 minutes to execute. By the time data was available, decisions had already been made on outdated information. The root cause: unoptimised Denodo virtual data models, inefficient VQL, and integration patterns creating unnecessary computational overhead across multiple source systems.
40–50 minute query execution times
Critical business reports taking 40–50 minutes to run — making real-time C-suite decision-making impossible. Denodo models built iteratively without performance optimisation, pulling from databases, APIs, cloud, and flat files through inefficient joins and missing caching.
Denodo VQL rebuild — zero new infrastructure
Complete reconstruction of Denodo virtual data models with push-down optimisation, intelligent caching, restructured joins, and role-based security. All performance gains achieved through engineering discipline alone — no new infrastructure required.
Query Performance Diagnostic
Full audit of existing Denodo base views, derived views, and join strategies to identify the specific patterns causing 40–50 minute execution times. Profiled every bottleneck individually before touching any code.
Denodo VQL Model Reconstruction
Rebuilt virtual data models from scratch — push-down query optimisation, elimination of redundant derived views, and restructured joins to minimise data movement across the virtualisation layer.
Caching Configuration & Refresh Strategy
Implemented intelligent caching at the Denodo layer for frequently accessed datasets — full and partial cache modes with scheduled refresh cycles balancing data freshness against performance.
Role-Based Security & Data Masking
Designed and implemented RBAC policies and data masking within Denodo — sensitive operational and financial data accessible only to authorised users with appropriate masking.
5 Executive Power BI Dashboards
Built 5 executive-level Power BI dashboards connected to the rebuilt Denodo layer — transforming complex multi-source energy datasets into clear narratives for 8–10 C-suite stakeholders.