We provide a calculator on our website for prospective customers to get an estimate of the annual savings and earnings achievable with our Hub.
The calculator allows you to enter your estimated annual consumption and generation along with the preferred size of your battery.
The savings and earnings are detailed as follows:
Export - the amount you could earn from your Smart Export Guarantee provider for any energy you return to the grid.
Arbitrage - the potential savings from importing energy when it is cheaper whenever we can.
Flexibility - the predicted earnings from us being able to use your system for Grid Services.
Self-consumption - the potential savings from being able to use your own generation rather than importing from the grid.
Efficiency - the potential savings from our Hub helping your system to react quickly which reduces energy loss and optimises self-consumption.
Calculation notes
Year 1 savings calculations rely on MCS methodology as described in "A method to determine the Electrical Self-Consumption of Domestic Solar PV Installations with and without Battery Storage" with reference MGD 003 published in 27/04/2022, assuming the battery is solely used for demand reduction to derive the self-consumption and export benefits prior to the installation of the hub whilst arbitrage & efficiency considering the battery is only used for this purpose considering only the uplift against the previous case. From the latter, 525 kWh have been reserved for flexibility trading purposes and priced according to Levelise market expectations. Note the hub operation may change the value pot composition aiming to maximise returns but not the total return.
Default tariff rates are used in the above calculations which are updated quarterly (or as per the Ofgem price cap review frequency). The current tariff rates used are:
| Electricity import unit rate | £0.2249 per kWh |
| Electricity export unit rate | £0.1500 per kWh |
| Electricity import day rate (04:30-00:30) | £0.2964 per kWh |
| Electricity import night rate (00:30-04:30) | £0.0700 per kWh |
| Electricity import standing charge | £0.6009 per day |