Best Solar Upgrades for Landlords That Pay Off
20 October 2026 | By RJ Hill Electrical
A vacant rental property is the best time to make energy improvements. Access is simpler, disruption is lower and you can deal with the roof, electrical system and metering before a new tenancy begins. The best solar upgrades for landlords are not necessarily the biggest systems. They are the upgrades that suit how the property is occupied, improve its long-term appeal and can be maintained without creating complications between tenancies.
For some landlords, that starts with a straightforward Solar PV system. For others, battery storage, landlord-supplied electricity for communal areas or EV charging will deliver more value. The right answer depends on the property type, tenant arrangements and whether you want to reduce your own operating costs, improve the rental offer or both.
Start with Solar PV on a sound roof
Solar PV is usually the strongest first investment for a rental property with suitable roof space. Panels generate electricity during daylight hours, reducing the amount of power drawn from the grid. In a house where tenants pay their own electricity bill, they receive the direct day-to-day saving. That can still be a meaningful advantage for a landlord: a lower-cost home is easier to market and can help retain tenants who are conscious of energy bills.
For flats, HMOs and commercial units with landlord-paid communal electricity, the case can be more immediate. Solar generation can offset the cost of lighting, security systems, communal heating controls, pumps, gates and other shared loads. This gives the landlord a clear return rather than relying solely on the wider appeal of a lower-energy property.
A good installation begins with the basics. The roof should have sufficient remaining life, limited shading and a suitable orientation. South-facing roofs often produce the highest annual yield, but east-west arrays can also work very well, especially where electricity use is spread across the morning and afternoon. It is rarely sensible to install panels on a roof that is likely to need major repairs within a few years.
An MCS-accredited installer should assess the roof, design the system around realistic generation figures and handle the technical requirements for connecting safely to the local network. This matters because an oversized or poorly designed system can disappoint, even if the headline panel capacity looks impressive.
Best solar upgrades for landlords beyond panels
Once Solar PV is in place, the next decision is how to use more of the electricity generated on site. This is where battery storage, smart controls and charging infrastructure can add value, but each should be selected for a clear reason rather than added as a standard package.
Battery storage for higher self-consumption
A battery stores surplus solar electricity for use later, such as in the evening when lighting, cooking and appliances increase demand. In an owner-occupied home, that can be an easy decision because the same household benefits from generation and consumption throughout the day.
Rental properties need a little more thought. A battery can be highly effective in a furnished holiday let, serviced accommodation, HMO or property where the landlord pays bills. It may also appeal to tenants who want lower running costs and some protection from changing electricity prices. In a standard single-let property where tenants choose and pay for their own supplier, the landlord should be clear about who benefits and how the system will be managed.
Battery storage is also useful where resilience is a priority, although not every battery provides backup power during a power cut. That capability needs to be designed into the system, often with a dedicated backup supply and carefully selected circuits. Do not assume a battery alone will keep the whole property running when the grid fails.
Smart monitoring and energy controls
Monitoring is one of the most practical upgrades a landlord can make. A clear monitoring platform shows solar generation, battery activity and site consumption, helping identify faults before they become expensive and providing evidence that the system is performing as expected.
In landlord-controlled areas, smart timers and controls can move flexible demand into daylight hours. For example, communal cleaning equipment, hot water heating or other scheduled loads may be able to run while the panels are generating. The result is greater use of on-site power and less electricity exported at a lower rate.
Remote monitoring also makes handovers easier. When tenants change, you have a better record of the installation and can explain what is fitted without relying on guesswork.
EV charging where the parking makes sense
An EV charger can make a rental home more attractive, particularly where there is off-street parking and no simple public charging alternative nearby. It is most valuable when the property is likely to attract professional tenants, families with driveways or business occupiers with electric vehicles.
The important point is load management. An EV charger, Solar PV, battery storage and the existing property supply need to work together safely. A qualified electrical assessment will confirm whether the consumer unit, earthing arrangement and incoming supply are suitable. Smart charging can prioritise available solar generation or avoid excessive demand at peak times.
For multi-occupancy sites, think carefully about access and billing before installation. A charger that cannot fairly allocate electricity costs can become an admin problem rather than a selling point.
Do not overlook the electrical foundation
Solar equipment is only as dependable as the electrical installation it connects to. Before investing, check the condition of the consumer unit, protective devices, cabling and earthing. Older rental properties may need remedial work before they are ready for Solar PV, batteries or EV charging.
This is not an area to cut corners. Rental properties have ongoing electrical safety responsibilities, and the installation should be designed so that future inspection, maintenance and tenant use remain straightforward. Combining electrical improvements with renewable upgrades can avoid duplicated work and give you one coordinated system rather than separate additions fitted over several years.
Match the upgrade to the tenancy model
The strongest return often comes from matching the system to the way electricity is paid for. If tenants hold their own electricity accounts, Solar PV improves the home’s running-cost appeal, while batteries may be harder to justify purely on landlord savings. If you provide bills as part of the tenancy, self-consumption becomes much more valuable and storage deserves closer consideration.
For HMOs and blocks of flats, separate meters and communal supplies need particular care. Panels connected to a communal meter will reduce communal costs, but they will not automatically reduce every resident’s individual bill. A clear design and transparent billing arrangement are essential.
Commercial landlords should look at daytime demand first. Offices, workshops, farms and small business units that use electricity during working hours can make excellent use of solar generation. Where a tenant’s consumption profile is known, a tailored design is far more useful than selecting a system based on roof size alone.
Protect value with a clear agreement and aftercare
Solar equipment should be included properly in tenancy documentation and property records. Tenants need simple information on what the system does, how to view generation and what not to alter. They should also know who to contact if an inverter displays a fault or the monitoring app stops reporting.
Keep certificates, commissioning records, warranties and maintenance details together. If a property is sold, refinanced or re-let, good records make the installation easier to understand and demonstrate that it was completed professionally.
Maintenance requirements are generally modest, but they are not zero. Periodic checks of system performance, visual condition and electrical components help protect output over the long term. Trees grow, roofs change and faults can go unnoticed if nobody monitors the system.
Plan the project before the next tenancy
The best time to act is before urgent repairs force the issue. Start with the roof condition, existing electrical installation, likely tenant profile and the property’s daytime electricity use. From there, choose the measures that solve a specific problem: Solar PV for lower energy demand, battery storage for better use of generation, smart controls for landlord-paid loads, or EV charging where it genuinely improves the let.
A professionally designed system should make the property more efficient without making it harder to manage. For landlords across Lincolnshire, Norfolk, Cambridgeshire, Rutland and Leicestershire, RJ Hill Electrical can assess the full electrical picture and provide a practical quotation built around the property, not a one-size-fits-all package.