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The importance of selecting the right size battery for your home simply cannot be overemphasized. A lot of home and property owners are facing this challenge and understandably so. Selecting the right battery size for your needs depend on a number of factors which includes your motive for adding a battery, your electricity usage, your budget as well as your panel array size, be it new or existing. In this post, we’re going to take you through some of these factors to help you determine the right battery size for your home or property. Let’s take a look!

• Your motive for getting a battery. While most people purchase a battery to wipe out their need to purchase electricity from the grid with the hope of making some savings, others add a battery so as to enjoy backup power. There are also some who just needs it to power their home with solar energy. It’ll not be economical to size a battery to effectively take you off the grid, but if your motive is to make savings, then you’ll should expect to purchase some electricity from the grid during the year.
• Electricity usage. The average household uses about 16kWh of electricity on a daily basis. During the daylight hours, most of these household will use a third of their electricity when the solar panels are still generating electricity, while the remaining two third are purchased from the grid. In other words, you’ll require a minimum of 10kWh battery capacity if you were to use a battery to power the electricity you purchase from the grid.

For a typical British household, you’ll most likely need a 5kWh solar power system which normally generates about 17 to 21 kWh on a daily basis depending on your location in the UK.

The cost to charge an electric car in the UK varies between home, work and public charging.

For a typical electric car with a 60kWh battery and ~200 mile range:

• Charging at home: Costs about £9.20 for a full charge. *
• Charging at work: Many employers will install workplace charging points and typically offer free access throughout the day.
• Charging at public locations: Public chargepoints at supermarkets or car parks are often free to use for the duration of your stay.
• Rapid charging: Rapid charging points are normally found at motorway service stations and typically cost £6.50 for a 30 min, ~100 mile charge.

Charging an electric car at home costs about £9.20 for a full charge* and is the most convenient and cost-effective way to keep your car fully charged. Most drivers will charge their electric car overnight, waking up to a full battery every morning.

Average domestic electricity rate in the whole of the UK is about 17p per kWh.

Fully charging a 60kWh electric car will cost between £9.00 and £9.90 (depending on where you live) and give you about 200 miles of range.

* Costs calculated at 17p/kWh based on usable battery is ~54kWh (90%).

If you are thinking of buying an electric vehicle, then one of the first things you’d have to put into consideration is charging. When it comes to charging of your electric vehicle, doing it at home is one of the most convenient things that comes with it. Not only do you get to avoid the fuel stations, but you’d also get to drive a car in a much cheaper way. Fitting an EV charger or wallbox at your residential space gives you the option to add miles to your battery in a lot faster manner than making use of a three pin plug. In fact, there are also some chargers that offers a lot more than just being a fast way to charge your vehicle.

So which home ev charger should you use? There are a wide range of options available in the market today, however you can get the perfect match for your vehicle by answering these few questions:

• Can you park two cars side by side? If yes, then a tethered charger might just be your most suitable option. A tethered cable is one that’s always connected to your home’s charger. One of the major benefits of using this is that you can get home and plug the charger straight it without having to fetch the cable or carry it around.
• Is size and design crucial? If yes, then you can consider wallbox chargers or untethered wallboxes which are smaller in size and minimalist in design.
• What if your WiFi isn’t accessible? If your WiFi signal is poor in the spot where the charger is to installed but your mobile phone signal is good, then Ohme is a good option to consider.

Most domestic solar thermal panels do not need planning permission and are covered by permitted development rights. There are restrictions on the size and location of these systems. If you live in a conservation area or listed building, or want to install a very large solar thermal system, check with your local authority to see if you will need planning permission.

How Many Solar Panels And Batteries To Power A House?

Do you wish to know the number of solar panels and batteries sufficient for a house? Well, this is a frequently asked question in the solar world which would be very difficult to provide an accurate answer. This is basically down to the fact that all homes are unique with different sizes as well as amount of daily energy requirements. As a result, the number of solar panels and batteries needed would be unique to the house in question. However, we’ll consider the varying influencing factors that will go a long way to help calculate the number of panels and batteries needed to power a house.

First and foremost, let’s take a look at the solar panels. You’d have to start here by putting into consideration all household appliances that makes use of power in the house to get a good idea of how many that’ll be needed.

• How Many Watts Is Being Used In The House On A Daily Basis?

To determine this, simply go through your utility bill for kilowatt-hours (kWh). This varies amongst homes and being able to identify your daily average energy usage will assist you in getting your solar needs.

• What Is The Number Of The Peak Sunlight Hours At The House’s Location?

Having in mind that the solar panels only work when under direct sunlight, the first step to determine the peak sunlight hours. Once determined, you can then multiply the figure in hours by the house’s hourly energy usage and divide by the solar panel’s wattage.

Overall for a 1500 square foot house, the number of solar panels that’ll be required should fall around 15 to 18.

Meanwhile for batteries, there are also some factors to be considered to determine the number of batteries that is required to power a house. These factors include the house’s power or electricity usage, the period of time in which the battery will be used as well as the battery’ specifications.

For most homeowners, rewiring a house is always a sore subject they’d prefer to avoid especially when they think of the expenses they’d have to incur or the mess and complexity that the project involves. However, this is a subject we’d all have to face sooner or later as an old wiring poses a lot of drawbacks, while an improper wiring can also prove to be more expensive and even cause more damage as it can lead to not only electrical shorts but also electrical fires. When a wire triggers a spark or a current overload, this can cause fire and the entire house may be down in ashes within a couple of minutes. Hence, one of the several reasons why house rewiring is just too important to ignore.

In this FAQ, we’re going to take you through the house rewiring process so as to ensure that your project is done to perfection. However, if you do not feel confident enough to pull this off, we’d strongly recommend you get in touch with a reliable electrical professional who can guarantee that a safe and effective work is done.

• Firstly, you’d have to upgrade the main service panel to a minimum of 100 amps
• Fit dedicated circuits in the service panel for all the home’s major appliances.
• Allow for a space of about 6 to 8 feet between electrical outlets throughout the house in order to cut out the need to run extension cords which could be a fire hazard.
• Install only three-prong type to avoid electrical shocks when fitting new outlets.
• Using ground fault circuit interrupters, fit outlets in the bathrooms, kitchen as well as outdoors. These outlets will shut themselves out so as to prevent electrical shock when wet.

Most people want to connect solar panels to a battery when they’re not at home all day to use the electricity they generate, or generate more than they consume over a day. Solar batteries are a great way to maximise the savings on your energy bills since you can use every unit of electricity you generate.

If you want to connect your solar panels to a battery, the best – and safest – way is to ask an MCS-registered company to do it for you. They’ve had lots of training and hold qualifications in handling electricity and installing solar batteries, so they will be able to recommend the best battery for your solar panels and for the among of electricity you use. Some of the brands they might recommend include Tesla, SolarEdge and SolaX, but there are many more to choose from. If you want to send electricity to the grid from your battery to receive Smart Export Guarantee (SEG) payments, it’s also worth leaving installation up to a registered installer. This is because you might not be eligible for payments if your battery wasn’t installed by an MCS-registered company.

However, if you do want to have a go at connecting your solar panels to a battery, it’s worth finding out whether your system is ‘storage ready’. Most relatively new systems will be, since batteries are becoming more commonplace. If your solar panels are storage ready, they will have an inverter that can easily have a battery added to it. If this is the case, then you should be able to buy the solar battery you want and follow the manufacturer's instructions to install it.

But it’s worth remembering that electricity is extremely dangerous when handled improperly. If you don’t get the solar battery connected properly and something goes wrong, it could cause a fire or you could electrocute yourself. If a fire breaks out due to your battery, it’s unlikely that your home insurance company would pay out since you connected the battery yourself. That’s why it’s always worth speaking to a registered installer to install a solar battery storage system for you.