Solar PV Battery Storage / Backup
Sunshine on Tap!
Here at Egensys, we have years of experience installing and maintaining solar battery storage systems on homes and businesses in the Midlands and Yorkshire.
We are committed to providing you with a tailored renewable energy package, using tried and tested equipment all managed and installed by our friendly customer focused team.
We want to help your reduce your energy bills, by maximising your self generated solar electricity, running your home or business with Sunshine on Tap!
How do solar batteries work?
During sunlight hours a Solar PV Battery system will be generating electricity which is used by the property, thereby reducing the electricity imported form the grid, lowering bills.
However, the light levels during a day will vary, meaning the amount of electricity generated will be variable, or non existent at night. In addition energy usage during the day will vary depending on whether the home is occupied or what appliances are being used. This means that the solar electricity may either be to little or too much to satisfy demand during the day and not able to at all during the evening.
A Solar battery charges when the solar panels are producing more than the house needs and discharge the stored free electricity when the panels are producing less than the house needs.
They are a temporary store of electricity which as little as possible is exported to the grid during the day and allows the property to utilise the free electricity at night. Backup batteries for solar power are discussed later.
Technical Terms
There are several battery systems on the market so it can be difficult to differentiate between them to identify the most suitable product. The below descriptions will help explain what some of the terminology means.
Watts and kWh: A watt is a expression of energy the high the wattage the greater the energy being used. A kilowatt hour kWh is an expression of the amount of energy being used over time. One kWh is 1000w of energy being used constantly for one hour. One kWh is often described as a "unit" of electricity by suppliers.
Charge/Discharge Capacity: This is the amount of energy in watts the battery can charge or discharge at any one time, the higher the wattage the more effective the battery will be at meeting demand.
Storage Capacity (Depth of Discharge): The storage capacity of the battery is often measured in kWh and represents the amount of electricity which can be stored, the higher the value the more effective the battery, with one important caveat!, batteries cannot empty of electricity entirely so what can be stored can not be accessed fully, this is called Depth of Discharge (DOD) Lead acid batteries can only supply 50% of their stored energy, Lithium ion is around 80-90%.
Charge Cycles: One charge cycle is a battery from fully charged to discharged to fully charged again. The lifespan or a battery is often represented in charge cycles, and a battery will often complete one cycle in a day.
Back-Up: This is the ability of a battery to continue providing power to the property in the event of a power cut. Despite misconceptions, this is not a standard solar battery feature and most systems will shut down in the event of a power cut for safety reasons. It is possible to have a back-up facility with certain products such as the Tesla Powerwall 2, so long as specific requirements laid down by the network operators are satisfied.
PV Solar Battery Storage / Backup
Tesla - Powerwall 3
SolarEdge Energy Bank
Tesla - Powerwall 3
Powerwall is Tesla’s revolutionary home battery that stores the sun’s energy and intelligently delivers this clean, reliable electricity when the sun isn’t shining. Combine Powerwall with solar to increase your home’s independence, reduce electricity bills and provide backup power in the event of a power cut. More:
GivEnergy
SolarEdge Energy Bank
Tesla - Powerwall 3
GivEnergy are a British Owned Battery Storage Manufacturer with manufacturing/Research and Development facilities in the UK, Ireland, Australia and Shenzhen China. More:
SolarEdge Energy Bank
SolarEdge Energy Bank
SolarEdge Energy Bank
The SolarEdge Energy Bank 10kWh battery is designed to easily connect with the award-winning SolarEdge single phase HD-Wave inverters, delivering industry-leading efficiency to ensure power when and where it’s needed most. More:
Myenergi Libbi
Sigenergy - SigenStor
SolarEdge Energy Bank
The Myenergi Libbi is a modular battery system that adapts to your needs.
Libbi was created to store your electricity, to use it when you need it most. It allows you to capture as much surplus solar electricity as possible, whilst integrating with your existing myenergi devices. More:
Sigenergy - SigenStor
Sigenergy - SigenStor
Sigenergy - SigenStor
Integrating Solar Inverter, EV DC Charger, Battery PCS, Battery Pack, and EMS into one powerful energy system - this is our revolutionary 5-in-One Home ESS. More