Frequently Asked Questions
General Questions
We provide a full range of renewable energy services across NI, UK & ROI, including solar PV systems, battery energy storage (BESS), hybrid generators, off-grid systems, EV charging solutions, groundworks, and renewable heating systems.
Yes.
We install renewable energy systems for residential, commercial, industrial, and agricultural properties.
Whether you need a home solar PV system or business EV charging hub, we design solutions to suit every client.
Our team provides a free consultation and site survey to assess your energy use, property type, and future goals. We’ll recommend the most cost-effective renewable energy system, tailored to your home or business.
GreenRock operates across Northern Ireland, the wider UK, and the Republic of Ireland (ROI), delivering renewable energy, EV Charging services and contracts services to homes, businesses, and large-scale projects.
We offer ongoing maintenance, warranty support, and repair services. Our team provides fast response times and carries out servicing to keep your solar panels, batteries, or EV chargers performing at their best.
The cost of renewable energy solutions depends on the type of system, the size of your property, and your energy needs.
At GreenRock, we provide tailored quotes for solar panels, battery storage, EV chargers, heating systems, and groundworks across NI, UK & ROI.
Our aim is to design cost-effective solutions that deliver long-term savings on energy bills.
Alongside our renewable energy installations, GreenRock offers a full range of contracts and groundworks services across NI, UK & ROI.
This includes trenching, ducting, site clearance, excavation, reinstatement, and civils support for solar, EV chargers, and commercial projects.
By handling both the renewable technology and the groundworks in-house, we save our clients time, cost, and the hassle of managing multiple contractors.
Hybrid Generators
A hybrid generator combines a traditional fuel generator with a battery energy storage system (BESS).
This allows you to use stored energy when demand is low, reducing reliance on fuel and lowering running costs.
Hybrid generators are more efficient because the battery provides backup power, meaning the generator doesn’t need to run constantly.
This reduces fuel usage, maintenance costs, and carbon emissions.
Hybrid generators are quieter than standard diesel or petrol generators, since the battery supplies power for much of the time.
The generator only runs when extra energy is needed, cutting down on noise.
Yes.
Hybrid generators are ideal for off-grid and remote locations where connecting to the grid is difficult.
They provide reliable power for homes, businesses, farms, and construction sites.
Solar PV Systems
Yes.
Solar panels generate electricity even in cloudy conditions, although efficiency is lower compared to sunny days. Modern solar PV systems are designed to perform well year-round in the UK & ROI.
In most cases, yes.
Many solar PV systems are scalable, meaning you can add extra panels or battery storage later to increase capacity as your energy needs grow.
No, when installed by professionals, solar panels protect rather than damage your roof.
Mounting systems are secure, watertight, and extend roof lifespan by shielding it from the elements.
Extra energy can be stored in a home battery storage system or exported back to the grid.
This reduces waste and maximises your return on investment.
Yes.
Properties with solar panels often see increased value and attractiveness to buyers, as they come with lower running costs and long-term energy savings.
Off-Grid
An off-grid solution means your property is completely independent of the main electricity grid, relying on a mix of renewable energy sources, battery storage, and backup generators for power.
Yes.
Our systems can be designed to make your home, business, or farm 100% off-grid, with solar, batteries, and hybrid generators providing full energy independence.
Yes.
Battery storage and hybrid generators ensure reliable power even in cloudy, rainy, or winter conditions, making off-grid living practical in the UK & ROI.
Absolutely.
Our systems are scalable, so you can add more battery storage in the future as your energy needs grow.
EV Charging
Yes.
We install multiple EV chargers for multi-vehicle households, commercial car parks, or fleet operations, with load balancing to manage energy use.
In most cases, yes.
Installation depends on access to parking and electrical infrastructure.
We offer tailored solutions for apartment blocks and shared spaces.
No.
Charging an EV at home is typically cheaper than petrol or diesel, especially if you use off-peak electricity tariffs or solar energy.
Yes.
By combining solar panels and battery storage with your EV charger, you can power your vehicle with clean, renewable energy and cut running costs.
Renewable Heating Systems
Yes.
Our renewable heating systems are designed to perform efficiently in all seasons, including the colder winter months, keeping your property comfortable year-round.
Renewable heating systems use sustainable energy sources such as air-source heat pumps, ground-source heat pumps, or biomass boilers.
They provide heating and hot water while reducing reliance on fossil fuels.
Yes.
Renewable heating can significantly reduce your energy bills by using natural energy sources.
Yes.
With the right design, renewable heating can be installed in older homes as well as new builds. We provide tailored solutions to ensure compatibility and efficiency.
No.
Modern renewable heating systems, including air-source and ground-source heat pumps, are designed to operate quietly, making them suitable for both urban and rural homes.