Energy Tariff Analysis: Choosing the Right Electricity Rate Structure for Your Business

Most businesses accept whatever electricity tariff their utility assigns them at connection. That's a mistake.

Utility companies offer multiple rate structures for commercial customers, each designed for different consumption patterns. The difference between the right tariff and the wrong one can represent 10–20% of annual electricity costs — thousands or hundreds of thousands of dollars depending on facility size.

Common Commercial Electricity Rate Structures

**Flat rate tariffs** charge a fixed price per kWh regardless of when electricity is consumed. These are simple but rarely optimal for facilities with controllable loads.

**Time-of-use (TOU) tariffs** charge different rates at different times of day — typically higher during peak demand periods (morning and evening) and lower during off-peak hours. Facilities that can shift loads to off-peak periods can significantly reduce costs under TOU structures.

**Demand-based tariffs** charge for the maximum power demand recorded during a billing period in addition to energy consumption. These tariffs favor facilities with flat, predictable load profiles.

**Real-time pricing** tracks wholesale electricity prices, passing cost fluctuations directly to commercial customers. Facilities with flexible loads and sophisticated management systems can benefit significantly from real-time pricing.

EC.DATA's Tariff Analysis Module

EC.DATA's tariff analysis module models a facility's actual consumption data against multiple available tariff structures, calculating what the electricity bill would have been under each option.

This analysis provides objective evidence for tariff selection decisions — identifying the rate structure that minimizes costs given the facility's actual consumption patterns.

The platform also models the impact of operational changes on tariff costs. If a facility shifts certain processes to off-peak hours, how much does that save under TOU pricing versus a demand tariff? EC.DATA answers this question with actual consumption data.

For multi-site operators, EC.DATA's tariff analysis can identify cases where different sites in the same region might benefit from different rate structures — optimizing procurement decisions across the portfolio.