A Victorian terrace goes 70%
solar.
Brighton · 2-bed terrace · 3 people
Solar
Battery
Kova Plus
70%
Self-powered over the year
£980
Pounds saved in year one
1.1 t
CO₂ avoided per year
5 mo
Payback on Kova Plus
BEFORE
Monthly bill
£132
Heating
Gas boiler
Tariff
Standard variable
Peak usage
48% of kWh at 4-7pm
AFTER KOVA
Monthly bill
£51
Gas boiler
Tariff
Agile
Peak usage
6% of kWh at 4-7pm
The setup
Diego Ferraro fitted 3.6 kWp of panels on a narrow south-facing roof and a 5 kWh battery in the cellar.
Kova squeezes every bit out of the panels and battery, and switches the house over when prices spike at 5pm.
“We ran through the winter on 70% solar. I barely think about it.” - Diego Ferraro
What made the difference
Charging the battery from cheap overnight power on grey days kept the house off peak prices all winter.
