Which of the following is NOT one of the key revenue metrics for data centers?

In the context of data centers, key revenue metrics are closely tied to the operational efficiency and revenue-generating capabilities of the facility.

Occupancy (MW of IT Load Leased) refers to the amount of power capacity leased to clients, which directly correlates with the data center's revenue generation potential. The more megawatts of IT load that are leased out to customers, the higher the potential revenue.

Rent per MW (€/MW) measures the rate at which the data center is charging its clients for the power they're using. This metric is critical as it indicates the pricing strategy and the revenue per unit of power sold, contributing to the overall financial health of the data center.

Uptime % is a measure of reliability and operational performance, reflecting how often the data center is operational and available for client use. High uptime can influence client satisfaction and retention, impacting long-term revenue.

Annual depreciation, while an important accounting measure for understanding the decline in value of the data center's assets, is not a direct revenue metric. Instead, it reflects the accounting treatment of capital expenses over time rather than the center's revenue-generating performance. Thus, it stands apart from the other metrics that directly impact revenue generation in a data center environment.