The fundamental idea behind microgeneration is to maximize self-consumption. Customers often pay 67% more for the energy they import compared to the savings they receive from exporting the same amount. So, why sell energy to the grid only to buy back later? A properly sized battery can accelerate the payback period for your solar panels. In the UK, most households consume between 10 and 30 kWh of electricity daily, largely influenced by whether they use gas or electric heating. Our current estimate suggests that batteries with a capacity of up to one-third of your daily consumption are the most effective.