Battery Storage

If you add a battery to your solar system it will allow you to store the surplus electricity you generate during the day to power your home during the evening. This will mean that you will import less electricity from the grid and will save you money on your energy bills.

Having a battery allows you to store the electricity generated from the sun via your solar panels to use at a later date. With a battery, you could use 30 per cent more of the electricity you generate than with solar panels alone.

A typical solar system would require a medium sized battery of approximately 4-6 kWh. On average a home suitable for solar consumes around 12 kWh a day.

Flexible finance

If you want to spread the cost over a period of years we offer a flexible finance option.

Save energy

Having a battery will allow you to use the energy you generate through the day after the sun has gone down.

Cut costs

You will save money on your energy bills by importing less electricity from the grid and using the electricity you have stored in your battery throughout the day.

Peace of mind

Your investment is protected with our 12 year warranty on all battery storage products.

How much does a solar battery cost?

On average a battery would £400 per kWh depending on the size, make or model.

How big is a battery?

An average battery is slightly bigger than a combi boiler which can be installed in most places for example; a garage, utility room or a cupboard under the stairs.

Battery storage for businesses

Solar batteries are large energy storage units typically seen outside a building. They charge during daylight hours if the battery is linked to a solar PV system or it will charge during the night from the grid if there are low energy demands. The batteries’ Dynamic Firm Frequency Response (DFFR) monitor and discharge the stored energy. The solar batteries are made up of rechargeable lithium-ion and are stored in smaller battery packs within the units.

Installing batteries as part of a wider energy strategy with commercial solar PV or as a stand-alone solution can create an additional income stream by providing an active response service to the grid. Solar batteries are intended to be used for commercial energy storage and stores electricity for solar self-consumption, time of use load shifting, backup power and off-the-grid use.

The benefits of solar battery storage for businesses

Installing a battery storage system can help your business to better manage its electricity consumption. By integrating with existing electrical connections there are two main opportunities for businesses to see value from their batteries.

Store solar energy

Battery storage can hold energy from commercial solar PV systems, acting as a store for surplus electricity generated on-site rather than exporting it. In certain circumstances, a solar battery can be used to reduce the costs of upgrading the grid if the local infrastructure needs to be improved to facilitate the connection of new renewable systems, allowing you to control the energy that you use to power your site.

Generate additional revenue

You can also seek additional revenue from on-site battery storage, using it purely as an income generator. You can even use it solely for the benefit of your business’s operations, modulating your use of grid electricity to reduce costs. Alternatively, you may use a combination of the two – that’s the advantage of our batteries’ flexibility.

When connected to your site’s infrastructure, commercial battery storage will optimise the balance between generation and usage in a way that was not previously possible by protecting your business against future energy price rises, peak energy prices and business interruption through the following ways;

Storage of excess solar energy

Due to passing clouds and varying weather conditions on a typical day, solar electricity generation will fluctuate frequently during daylight hours. By incorporating solar battery storage, your business can create a controlled output and smooth generation profile by storing green energy above a certain generation (kW) in the battery. This energy can then be released back into your infrastructure at other times when the solar energy generation is not so high.

Load shifting

Your business can reduce energy costs by charging the battery when energy is cheap – either at night via the grid when tariffs are low and/or during the day with excess solar – and ‘shifting’ this power to periods when energy is expensive i.e. during the day and peak periods. Operating the battery this way will typically flatten out your company’s demand for energy from the grid.

Peak shaving

Transmission charges from electricity suppliers are an expensive element of your business’ energy bill, with few ways to reduce the costs. Off-setting your peak load demand with energy stored in the battery will flatten your demand at these peak points and ultimately create substantial savings on your energy bill. Reducing your peak consumption will also save money on distribution charges levied by electricity suppliers during these more expensive periods.

Reduced reliance on fossil fuels

When combined with solar PV, battery storage will help reduce your dependence on fossil fuels. Moving away from unsustainable methods of energy generation that are damaging our environment will shrink your carbon footprint.

Frequency response

This is onsite battery storage ability to quickly supply electricity to, or absorb electricity from, the grid at critical times. This might be in the event of a power station shutdown or the over-supply of electricity from wind during a weekend. Batteries are able to switch quickly to charge or discharge, making them ideal to meet frequency market requirements.

The National Grid is undergoing a period of significant change and whilst the grid is likely to always need balancing there is little certainty as to how this will be achieved into the future.

Is battery storage viable for my business?

The installation of a battery provides many benefits, though the ability to install a battery depends upon both your site’s infrastructure and the ability of the local electricity grid to accommodate it; Elven Energy can make early enquiries on behalf of your business to ascertain the viability of a battery.

The value of a battery will also depend upon the use and charges that your business experiences and, if grid services are procured, on the value that an aggregator will pay for use of a battery.

We can give you indicative revenue streams, according to current market conditions and energy prices, and work with you to assess your opinions of where inflation will sit and how you value your network access.

Funding for battery storage

Currently, there has been a drop in battery technology, making them more affordable without reducing their functionality. There are a range of local authority match funding grants of up to 85% for the installation of batteries to your business as part of an energy saving scheme and a reduction in carbon emissions. Elven Energy can help with arranging these funding options.