July was a pretty good summer month, by North East England standards. Key results are as follows:
- 1,215 kWh total energy consumption.
- 816 kWh solar
- 314 kWh off-peak grid (100% renewable supplier)
- 86 kWh peak grid (100% renewable supplier).
Taking into account the minor Government subsidy we receive for solar generation, we once again had a negative net cost of energy, paying minus £5.36 for the month’s electricity.
We fuelled our two EVs (and a Renault Zoe we had on test for the first half of the month) for a total of 758 miles in the month. The ‘fuel mix’ going into the EV batteries was 360 kWh solar and 97 kWh off-peak electricity. This blend produced a total electricity cost for 792 miles of EV motoring of £4.84, or 0.6 pence per mile. Using our normal comparison with a 35mpg OldTech car fuelled at the long-term average of £1.32 per litre, we saved £262 fuel costs in month.
The total net financial benefit in July was £384.93, made up of these £262.08 fuel savings and the £122.86 difference between the price we would have paid for 758 kWh of domestic energy at ‘Big 6’ utility company rates (£117.50) and the net minus £5.36 we actually paid.
Emissions avoided in the month by the combination of solar generation, 100% renewably sourced grid supply, and 792 miles of zero emissions driving totalled 378 kg.
Click the graphic below to download the full report in PDF format.