BECIFinance

• Each battery costs roughly £7,500, has a capacity of 25kWh and lifespan of 4.8 years. The total battery cost is the amount of new batteries required multiplied by the cost. The amount of new batteries is the total number of members plus 10% (for breakages and surplus) minus the number already owned. Figures do not include replacing batteries.
• Electricity costs are zero as the users pay for this.
• R&D cost is the total consultant fee of building all 50 battery switch stations this does not include the cost of building but is the charge for designing.
• Operations fee is used to keep the system run smoothly and account for unforeseen circumstances.
• Each switch station costs around £320,000 and 50 stations would be spread over a 5-year plan with 3 built in the first, 7 more in the second, 30 built by the third and a total of 50 at the fifth.
• Customer income is the annual cost of the subscription (£125 a month) multiplied by the number of subscriptions.
• 'Money Back' is the money we regain from National Grid Frequency response and vehicle to grid scheme.
• We expect the taxi market to plateau out after 5 years where there will be no new building and only 500 batteries would be needed per year to replace old ones. Although it will take time it has capacity to make a lot of money as shown by the 10 year calculation.

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