Case Study: Off-Grid Hybrid Power Solutions for Earlswood

Earlswood, a leading UK supplier in the equestrian, agricultural, and industrial sectors, required reliable and efficient power for an off-grid office and warehouse facility. The site was previously powered solely by a diesel generator, which ran continuously to support low loads. Recognizing the inefficiencies of this setup, Earlswood sought a more sustainable and cost-effective hybrid power solution.

Hybrid Power Setup

To address these challenges, Earlswood adopted a hybrid power solution consisting of:

• POWRBANK PRO: A 45 kVA/60 kWh battery energy storage system (BESS).
• 60 kVA Diesel Generator: Used to charge the POWRBANK mobile BESS as needed.

The load profile of the site is as follows:

• Daytime Load (7 AM – 5 PM): Averages between 3.5 – 4.5 kW, with peaks around 11 kW.
• Nighttime and Weekend Load: Approximately 1 kW.

Performance Summary

Since its setup in the spring, the hybrid power system has demonstrated significant benefits. After implementing the POWRBANK mobile BESS, the diesel generator has run for less than 12% of the month, only operating to recharge the POWRBANK as needed.

Hybrid Power Solution Results

Reduced Fuel Consumption

• Daily fuel use decreased from approximately 80 liters/day to 22-25 liters/day.
• Fuel consumption reduced by approximately 55-58 liters per day.
• Estimated daily fuel savings of £78.65 – £82.94 (based on diesel fuel priced at £1.43 per liter).

Reduced Carbon Emissions

By utilizing the POWRBANK mobile BESS in a hybrid power setup, the client reduced CO2 emissions by an estimated 148.5 kg to 156.6 kg per day.

Noise Reduction

The POWRBANK BESS operates silently, eliminating the constant noise of the generator and creating a more peaceful working environment.

Miles Gardner, Sales Director at Earlswood, shared his feedback:

“Been running about 22-25 liters of fuel per day versus 80 liters prior to putting this in. Not to mention the lower hours, less servicing, generator running at optimum capacity whenever it runs (approx. 70%), huge reduction in carbon emissions, and it’s so much more peaceful without the constant noise of the engine! It will use more fuel over the next 2-3 months as we’re using electric 3-phase heaters during winter. 100% recommend to anyone, thanks for all your support along the way. Great product, a proper fit-and-forget solution.”

Conclusion

The POWRBANK mobile BESS has succeeded in significantly reducing generator runtime, fuel consumption, and CO2 emissions. The hybrid power solution delivered cost savings while also enhancing operational efficiency and environmental sustainability. As the winter months approach, the system is expected to continue to meet increased load demands with the same reliability.