Store Solar Energy
Capture selected surplus generation for use after the panels stop producing.
Home Battery Storage Across Scotland
Home Battery Storage Designed Around Your Energy Use
Store more of your solar electricity, make intelligent use of time-of-use tariffs and reduce reliance on peak-rate grid power with a battery system designed around your home.
One team for assessment, system design, electrical installation and commissioning
✓
MCS Certified
✓
Which? Trusted Trader
✓
NAPIT Competence
✓
RECC Consumer Code
✓
DNO Coordination
A More Flexible Home Energy System
Use Electricity When It Delivers More Value
A home battery changes when electricity is available—not how much the home ultimately needs. The value comes from charging at the right time, discharging for the right loads and choosing capacity and power that fit the household.
Shift Grid Purchases
Charge during suitable lower-cost tariff windows and reduce higher-price imports.
Coordinate Technology
Design storage around solar panels, heat pumps, EV charging and future demand.
Add Designed Resilience
Include selected backup capability where the system is specifically designed for it.
Battery storage can be installed with new solar panels, retrofitted to an existing system or designed for grid charging.
New Solar and Battery
Design generation, storage, inverter architecture and controls together from the outset.
Battery Retrofit
Add storage to suitable existing solar after checking compatibility, warranties, metering and network requirements.
Standalone Home Battery
Use time-of-use electricity tariffs without requiring solar panels, where the financial and technical case supports it.
Correctly Sized Battery Storage
Bigger Is Not Automatically Better
A productive battery is one the household can charge and discharge usefully. Headline capacity alone does not describe how the system will perform.
Usable Capacity
The amount of stored energy routinely available after the protected reserve—not only the nominal kWh figure.
Charge and Discharge Power
The kW limit determines how quickly energy can enter the battery and how much household load it can support.
Consumption Profile
Half-hourly or representative usage helps identify when energy is needed and how often capacity could cycle.
Control Strategy
Solar forecasts, tariffs, reserve settings and major loads influence when the system should charge and discharge.
One Integrated Energy System
Battery Storage Built Around the Rest of Your Home
Solar panels, a heat pump, EV charging and battery storage can complement one another, but they also compete for electrical capacity. Smart Group considers the technologies together rather than adding isolated products.
| Technology | How the battery may support it | What the design must consider |
|---|---|---|
| Solar panels | Stores selected daytime surplus for later use. | Generation profile, inverter architecture and export tariff. |
| Air source heat pump | Can shift some electricity purchasing into lower-cost periods. | Heating demand may exceed battery power or capacity in winter. |
| EV charging | Can coordinate charging around solar generation and tariffs. | A vehicle can consume a home battery very quickly. |
| Household circuits | Reduces selected peak-rate imports and can support designed backup. | Essential loads, power limits and reserve strategy. |
The Smart Battery Process
Assessment Before Specification
Battery recommendations should begin with the household’s data, existing electrical system and intended outcome—not a standard package.
Energy Review
Assess electricity use, solar generation, tariffs, export and credible future demand.
Technical Survey
Review consumer equipment, supply, earthing, metering, solar equipment and cable routes.
System Design
Specify usable capacity, power, inverter architecture, controls and any backup requirement.
Location Assessment
Choose a position considering fire safety, temperature, moisture, impact and service access.
DNO Coordination
Complete the appropriate network notification or application for the final system.
Installation
Install the battery, inverter, metering, protection and monitoring to the approved design.
Commissioning
Test safe operation, charge schedules, limits, monitoring and any protected circuits.
Handover
Provide certification, warranties, emergency information and practical operating guidance.
Technical Installation Standard
Installed for Safe, Long-Term Operation
Battery location and protection require the same attention as capacity. The design must reflect current electrical, battery and fire-safety requirements alongside the manufacturer’s instructions.
Electrical Protection
Appropriate isolation, earthing, metering, protective devices and safe network interaction.
Fire-Safety Assessment
Consider construction, separation, escape routes, detection and the product’s installation requirements.
Suitable Environment
Protect equipment from unsuitable temperatures, moisture, flooding, impact and stored materials.
Clear Handover
Provide shutdown guidance, warranties, monitoring access and information for future servicing.
Battery Storage Costs
Price Should Follow the Design
From Your Data
Battery costs depend on usable capacity, power, inverter requirements, electrical upgrades, location, monitoring, backup equipment and retrofit complexity. Energy Saving Trust currently uses an indicative figure of around £4,600 for a 5kWh system, but individual projects vary widely.
Qualifying installed home battery systems are currently included within the temporary zero VAT rate for eligible energy-saving materials until 31 March 2027 under the rules reviewed for this page. The installer applies the correct rate at the time of supply.
Savings, tariff benefits and payback are estimates rather than guarantees. A proposal should state the assumptions used and explain the equipment and work included.
Read the Complete Battery Storage Guide
Backup Power
Resilience Must Be Designed Into the System
A standard grid-connected battery does not necessarily power the home during an outage. Backup requires suitable isolation, compatible equipment, protected circuits and sufficient available energy.
Essential Circuits
Identify the lighting, refrigeration, communications or heating controls that genuinely need support.
Backup Power
Confirm the system can supply the combined starting and running loads.
Energy Reserve
Keep sufficient capacity available instead of using every stored unit for normal bill savings.
Solar Recharging
Specify equipment that expressly supports safe solar operation while isolated from the grid.
Questions and Answers
Battery Storage FAQs
The practical questions to answer before choosing a home battery.
Can I install a battery without solar panels?
Yes. A standalone battery can charge from the grid, often through a time-of-use tariff, and discharge during higher-price periods. The system should be assessed against the tariff, losses, usage and installed cost.
Can a battery be added to my existing solar panels?
Yes, in many cases. Existing inverters, warranties, metering, electrical equipment, network approval and manufacturer compatibility must be reviewed first.
What size home battery do I need?
It depends on solar surplus, evening and overnight demand, tariff windows, major loads and how often the proposed capacity can be charged and used productively.
What is the difference between kW and kWh?
kWh describes stored energy capacity. kW describes how quickly the battery can charge or provide power. A large capacity with low output may not support high household loads.
Will a battery power my home during a power cut?
Only when specifically designed for backup. Many standard systems shut down during an outage. Backup requires compatible equipment, safe grid isolation and suitable protected circuits.
Can the battery charge on a cheaper electricity tariff?
Many systems can charge from the grid on a schedule. The benefit depends on tariff spread, control capability, losses and household consumption.
How much does battery storage cost?
Energy Saving Trust currently uses around £4,600 as an indicative cost for a 5kWh system. Actual cost depends on capacity, power, inverter architecture, electrical work, location and backup requirements.
How long does a home battery last?
Service life varies by chemistry, temperature, cycle pattern and product quality. Review warranty years, energy throughput or cycle limits and promised retained capacity together.
Where can a home battery be installed?
The location must meet the product instructions and current safety requirements. Fire safety, temperature, moisture, impact, escape routes and service access all require assessment.
Does battery storage require DNO approval?
Battery installations normally require the relevant Distribution Network Operator notification or application. The route depends on the equipment and wider generation system.
Start With Your Energy Profile
Find Out Whether Battery Storage Is Right for Your Home
Smart Group will review your electricity use, solar generation, tariff, electrical system and future plans before recommending a battery solution.