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Solar PV and battery storage

Design and installation of solar PV panels and solar tiles
On-roof, in-roof, flat roof and ground mount

solar panels on a roof
Solar panels on a roof
Solar panels on a flat roof
Solar panels on the ground
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MCS certified for the design and installation of solar photovoltaic systems and battery storage. Registration number: NAP63378

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Design and installation of inverters and battery storage

for grid-tied and standalone (island) systems​

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Why install solar panels and battery storage?

1. Reduce your energy bills

We've all seen the increase in the cost of electricity from the grid since 2021. This is likely to continue over the coming years. As bills increase, the period to recover the cost of installing solar panels or solar roof tiles and a battery storage system reduces and the potential savings over the lifetime of the system increase. You can also sell electricity back to the grid.

Battery storage can dramatically increase the proportion of generated electricity available to be used in the property. If the system is designed correctly, surplus electricity generated from the photovoltaic (PV) panels is stored for later use. This is a key consideration if the cost of buying electricity from the grid is significantly higher than the selling price to the grid. 

Another consideration is whether you have access to reduced rate electricity, for example Economy 7. With battery storage, you have the potential to run solely on cheaper electricity, which is particularly important during the winter

or if your property is not suitable for solar panels.

The inclusion of a power diverter can also represent a reduction in the energy cost for hot water within the property.  The energy diverter diverts power that would normally be exported to the grid from the solar PV system to the immersion heater, reducing the demand on conventional means of heating water. 

The annual savings, the period to recover the installation cost, and the savings over the lifetime of the system will depend on how much electricity you use, your tariff, how the electricity is used in the property, when the peak demand for electricity occurs in the property, the physical characteristics of the installed solar PV/battery system

and the cost of the installation. Because of these many variables, each installation will have its own financial characteristics. This is part of the design process we will discuss with you to ensure that you choose the correct system for your property and your energy needs.

2. Reduce your carbon footprint

All electricity generated from the solar PV system and used within the property will represent a reduction in the carbon footprint of that property. Any electricity exported from the property to the grid may also represent a reduction in the overall carbon footprint of the country.

3. Increase your property value

Renewable energy features such as solar panels are attractive to house buyers and can increase the value of your property.

Performance example

A graph showing grid usage verses generation

The graph details the electricity from both the grid and solar PV generation for 2022. The system is a 5kW array on a 40-degree pitched roof, orientated about -30 degrees from south. The inverter is a GivEnergy

5.0kW hybrid with two 8.2kWh GivEnergy batteries. 

The annual electricity usage of the property is about 4,400kWh, which is slightly above average. The system was switched on at the beginning of January 2022 and therefore provides a good representation of how PV can dramatically reduce the import of electricity during the period from March to September.

An example of a basic hybrid inverter installation

a PV array diagram

Key components:

  • PV array – generates DC electricity from sunlight. The output is affected by the orientation of the roof to due south, the pitch of the roof and shading.

  • Hybrid inverter – provides several functions:

  1. Takes DC current from the PV array and/or batteries and converts it to AC current usable in the property.

  2. Synchronises the generated AC current to the grid electricity.

  3. Acts as a battery charger.​

  4. Manages import and export of electricity.

  5. Provides an essential services supply that remains powered in the event of a power cut (dependent on power being available from the PV array and/or batteries).

  • Battery – stores electricity either from the PV system or the grid.​

  • Essential services consumer unit – enables dedicated circuits to be powered in the event of a power cut. These circuits are only powered from the inverter and not connected to the grid, limiting the total load to the capacity of the inverter.

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