No you don't.
We have developed a strategy to take advantage of the Economy 7* cheap overnight tariff. This depends on your use pattern, but standard models show a return on your investment of around 4% per year at current energy prices.
Of course, if you already have solar panels, then your savings may be even higher.
*We show economy 7 running 11pm to 6am, but this varies slightly by supplier and by region
This is a win-win for you.
Our systems are fitted after the generation meter, so your FIT readings are unaffected. Under current legislation you will also still get your export tariff payments, even if you keep the energy yourself in a storage battery for use when it is needed.
Not long. Typically within 2 weeks of receiving your deposit, but we will always make sure it is at a time to suit you.
This doesn’t affect any of your normal consumer protections, including the 14 day cooling off period.
This is primarily battery storage that stores electricity when it is cheap or plentiful, and makes it available to you when it is most needed.
Batteries store energy measured as kWh (this is exactly the same as the ‘unit’ of electricity in your electricity bill). To imagine what it means, consider a typical electric fan heater rated at 1 kW. If you have a 5 kWh battery, it could run that heater for 5 hours at 1 kW.
To avoid damage to your battery, it is never drained completely. Our systems allow the drain level to be set to ensure your battery life is maximised. The useable capacity is how much of your total battery capacity is available to use when the battery is fully charged.
Batteries are usually warranted for a certain number of cycles over their lifetime. A ‘cycle’ means a full discharge / recharge cycle. If you only partially drain the battery before recharging it this would count as a partial cycle. The number of cycles multiplied by the useable capacity gives the total energy that will be available to you over the life of the battery and that is warranted by the manufacturer. Of course good quality batteries are likely to keep working well beyond their warranty.
A good analogy is water. Imagine a bath full of water. The water is like a volume of stored energy (the kWh). Now imagine a tap that is open and the water starts to flow out. The amount that flows out each second is like the power (kW). The water (energy) will pour out of a big tap, but only trickle out of a tiny hole. The power needs to be sufficient to run real world equipment (a big enough 'tap'). For example, a kettle typically uses 2 kW for a few minutes. If your battery can deliver a power output at 2kW or above then it will all come from your cheap stored energy.
This is your choice - as an optional extra we can help design an emergency power system (EPS) to help you cope with power cuts. There are two main options: