Optimizing Building Energy Use: Data, Controls, and Integrated Workflow

Regulatory Push Meets Market Realities

Buildings account for a substantial share of global energy use and emissions, making their optimization a frontline battle in the energy transition. In 2026, the urgency has intensified due to maturing regulatory frameworks that shift from voluntary commitments to enforceable requirements.

The European Union's recast Energy Performance of Buildings Directive (EPBD), effective since mid-2024, compels member states to integrate its provisions by May 2026. This includes minimum energy performance standards for non-residential buildings, requiring renovation of the worst-performing 16% by 2030, alongside trajectories for residential stock reductions of at least 16% primary energy use by the same year. New public buildings must achieve zero-emission status from 2028, extending to all new constructions by 2030, with whole-life carbon assessments becoming mandatory for larger projects.

Across the Atlantic, the US Department of Energy's rules for federal buildings mandate phasing out 90% of on-site fossil fuel consumption in new construction and major renovations between 2025 and 2029, reaching 100% elimination from 2030 onward. Broader adoption of updated model codes, such as the 2024 International Energy Conservation Code (IECC), brings commercial buildings roughly 10% greater efficiency than prior versions, building on decades of incremental gains.

These deadlines arrive against a backdrop of escalating energy costs and unprecedented demand growth, particularly from data centers powering AI expansion. Electricity consumption records are projected for 2026 and beyond, straining grids and amplifying the financial impact of inefficient operations. Commercial real estate portfolios, where energy often ranks as the largest controllable expense, now confront tighter capital scrutiny and investor expectations for verifiable ESG performance.

Data, advanced controls, and integrated IT-OT workflows offer pathways to substantial savings—median reductions of 11-22% in some analyses—through real-time optimization of HVAC, lighting, and plug loads. Yet tensions emerge: retrofitting existing structures demands significant upfront investment and coordination, while over-reliance on automation raises cybersecurity and data quality concerns. Stakeholders also grapple with balancing occupant comfort against aggressive load shifting, and the risk that efficiency gains could be offset by rebound effects from increased electrification.

The convergence of these forces transforms energy optimization from a niche sustainability effort into a core operational and financial imperative for building owners and operators.