Solar Battery » Compare

BENEFITS OF GENERATING AND STORING RENEWABLE SOLAR ENERGY

How we calculate your savings from installing solar and battery

At Moixa, we want to help our customers get the most out of their batteries, so they can power their homes from greener and cheaper energy. Solar panels generate renewable energy during the day that supplies electricity to the home, reducing the need to buy electricity from the grid and thus lowering energy bills.

With energy prices on the rise, it makes sense to use as much of the free electricity your solar panels are generating as possible and solar battery storage makes this possible. The excess energy your home is not currently using goes into charging your battery, so instead of sending the excess electricity back to the grid, you can store it and power your home from the sun after it goes down, further improving the savings.

To achieve these savings, Moixa optimised battery systems monitor your household energy consumption and solar generation in order to best respond to your particular energy needs and maximise solar self-consumption. See our year one step by step savings breakdown for households who install 4kWp solar panels and 4.8kWh battery storage.

YEAR ONE SAVINGS FOR BATTERY ONLY INSTALLATIONS

Your bill reduction with a 4.8kWh Moixa Smart Battery added to your solar panels.

25% Bill Reduction 50% Bill Reduction 80% Bill Reduction Description
Battery Assumptions Battery Storage Capacity (kWh) 4.8 4.8 4.8 Total battery capacity
Battery Usable Capacity (kWh) 4.32 4.32 4.32 Total usable battery capacity (90% depth of discharge)
Full Battery Cycles (Cycles/y) 115 230 365 Total full battery cycles per year – can include cumulation of partial cycles
Energy Used From Battery (kWh/y) 497 994 1577 Total amount of energy stored and consumed from the battery per year
Before Battery Existing Annual Household Consumption  (kWh/y) 2000 2000 2000 Existing annual household grid consumption (without battery)
Electricity Rate (pence/kWh) 16.4 16.4 16.4 Price paid per unit (kWh) for grid electricity
Existing Energy Bill (£/y) 328 328 328 Existing annual electricity bill
After Battery New Annual Household Consumption (kWh/y) 1503 1006 423 New annual household grid consumption (with battery)
New Energy Bill (£/y) 247 165 69 New annual electricity bill
Reduction on existing bill (£/y) 81 163 259 Amount saved on electricity bill
Additional Benefit GridShare membership (£/y) 50 50 50 Additional GridShare membership benefit (year 1-3) not included in any of the above calculations

 

Assumptions & notes:

  • Assumes all household energy consumption is electric
  • Assumes energy rate is 16.4p (average price per kWh for 2019)
  • Assumes existing household grid consumption is 2000kWh/y
  • Bill reduction % are approximates and rounded figures

YEAR ONE SOLAR & BATTERY SAVINGS

Bill reduction with 4kWp of solar PV and a 4.8kWh Moixa Smart Battery

40% Bill Reduction 50% Bill Reduction 75% Bill Reduction
Solar & Battery  Assumptions Annual Solar Generation (kWh/y) 3800 3800 3800 Annual amount of energy produced by solar
Solar Generation Consumed by House (%) 35 35 35 % of annual solar generation consumed directly by the household
Solar Generation Consumed by House (kWh/y) 1330 1330 1330 Total kWh of annual solar generation consumed directly by the household
Spare PV (kWh/y) 2470 2470 2470 Total kWh of annual solar generation not directly consumed by the household
Battery Storage Capacity (kWh) 4.8 4.8 4.8 Total battery capacity
Battery Usable Capacity (kWh) 4.32 4.32 4.32 Total usable battery capacity (90% depth of discharge)
Full Battery Cycles (Cycles/y) 60 155 365 Total full battery cycles per year – can include cumulation of partial cycles
Energy Used From Battery (kWh/y) 259 670 1577 Total amount of energy stored and consumed from the battery per year
Exported PV (kWh/y) 2211 1800 893 Total amount of solar generation exported back to the grid – not consumed directly by household or stored in battery
Before Solar & Battery Existing Annual Household Consumption (kWh/y) 4000 4000 4000 Existing annual household grid consumption (without battery)
Electricity Rate (pence/kWh) 16.4 16.4 16.4 Price paid per unit (kWh) for grid electricity
Existing Annual Energy Bill (£/y) £656 £656 £656 Existing annual electricity bill
After Solar & Battery New Annual Household Consumption (kWh/y) 2411 2000 1093 New annual household grid consumption (with battery)
New Annual Energy Bill (£/y) 395 328 179 New annual electricity bill
Reduction on existing bill (£/y) 261 328 477 Amount saved on electricity bill
Additional Benefit PV Export (SEG) (£/y) 116 94 47 Additional potential earnings if signed up to a Smart Export Guarantee to sell surplus pv generation back to grid
GridShare membership (£/y) 50 50 50 Additional GridShare membership benefit (year 1-3) not included in any of the above calculations

 

Assumptions & notes:

  • Assumes all household energy consumption is electric
  • Assumes energy rate is 16.4p (average price per kWh for 2019)
  • Smart Export Guarantee (SEG) – 5.24p. Example rate is based on the previous FIT export rate. Actual SEG rates vary among SEG providers. The potential SEG earning shown above have not been included in our bill reduction calculations.
  • Existing Household Consumption – 4000kWh is based on the Ofgem publicly available facts and figures on annual electricity usage in the UK.
  • Yield – 950kK is an average that can be achieved by a mixture of different locations, roof slopes, and roof orientations, based on MCS irradiance datasets. There are multiple combinations that could achieve a 950kK yield, For example, A south facing roof in London with a 20-degree roof slope. Or an east/west facing roof in Brighton with a 15-degree roof slope.

PLEASE NOTE

Bill reduction % are approximates and rounded figures.
Savings may vary if the customer is on time-of-use tariff and has their battery optimised via a personalised charging plan.
Information is accurate on the date of publication.