A major global bank was facing high electricity costs across five office buildings and a data centre, with total annual consumption reaching 5.5 GWh. After exploring the market via their usual broker, the bank received a competitive fixed-rate tariff. The tariff provides price stability, but with limited room for cost optimisation.

Seeking a more innovative and cost-efficient approach, the bank engaged Q Energy to explore the potential of intelligent energy management.

Q Energy proposed a fully managed Smart Battery Tariff solution, designed to deliver immediate cost reductions without compromising financial predictability. The key components included:

• Guaranteed maximum unit rate of 18p/kWh, representing a baseline saving of 2p/kWh compared to the available fixed-rate offer. Over a three-year period, this translates to a projected saving of approximately £232,000, or 9% of total electricity costs.
  
  
• A performance-based savings model where the bank receives 30% of any extra savings below the 18p/kWh ceiling. This structure ensured both cost efficiency and commercial alignment between Q Energy and the client.
  
  
• Fully funded deployment of a 200 kW / 400 kWh Battery Energy Storage System (BESS) at the bank’s London site, enabled by the performance margin.
  
  
• Deployment of the SmartQube hub and cloud-based optimisation dashboard, providing portfolio-wide visibility and AI-driven control for energy trading and cost optimisation.

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• Q Energy’s smart trading and optimisation strategy outperformed the fixed-rate tariff previously offered to the bank, delivering £17,573 guaranteed savings delivered in the first three months.
• A year-on-year comparison of electricity bills at the three active sites showed a total saving of £143,523 over three months. On average, the client reduced monthly electricity costs by £47,841, achieving a 45% reduction compared to the previous year—nearly halving their electricity costs last year.

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