Solar Panel Ballast Blocks
Non-invasive precast foundations for large-scale solar farms
Why choose Solar Panel Ballast Blocks?
Our prestressed concrete ballast blocks provide a fast, flexible, and non-intrusive foundation solution for ground-mounted solar arrays. Designed for developers and EPC contractors, these modular units replace traditional piled foundations with a stable, reusable base that performs across a wide range of ground conditions.
- Non-invasive: no piles or drilling required – ideal for brownfield and environmentally sensitive sites.
- Prestressed strength: C50 concrete with prestressed reinforcement delivers long-term durability.
- Large footprint: evenly distributes loads, reducing ground pressure compared to conventional foundations.
- Flexible sizes: panels can be cast to match solar layouts and site-specific wind load requirements.
- Fast installation: delivered ready to offload and position in a single lift.
- Reusable and removable: designed for relocation or recycling at end of project life.
With Solar Panel Ballast Blocks, you’ll get:
Response from the team within 4 working hours
Full technical support, including datasheets, O&M manuals and CAD files
UK-wide delivery in 2–4 weeks
A flexible solar foundation system
When you need a foundation system that combines structural stability with quick installation, solar ballast blocks are the perfect solution. Each block provides a firm base for photovoltaic (PV) panels, featuring tongue and groove interlocks that keep rows aligned and securely connected to create a larger surface area.
The modular mould system allows blocks to be manufactured in a wide range of sizes – from 500mm to 1.5m wide, up to 6m long, and 150mm to 280mm thick. This flexibility enables ballast sizes to be customised to suit geotechnical conditions and wind load requirements for each project, ensuring safety and compliance without overengineering.
Product Features & Specifications
Solar Ballast Blocks are engineered for performance and practicality.
Concrete strength: C50 prestressed mix
Manufactured using high-strength C50 concrete with prestressed reinforcement for maximum load capacity and long-term durability.
Connection: tongue & groove interlock
Interlocking edges keep panels aligned and stable, reducing lateral movement and improving overall system performance.
Edge detail: Chamfered edges
Prevents chipping and surface damage during handling, maintaining a clean, professional appearance on every unit.
Concrete finish: mould and float finished
Base and sides are mould-finished for consistency, with a hand-floated top surface for a smooth, even appearance.
Design life: 50 years
Standard 50-year design life, extendable with increased reinforcement cover for long-term or high-exposure applications.
Reinforcement cover: 25 mm prestressed steel
Provides reliable protection and structural integrity, ensuring consistent performance in exposed environments.
Block Sizes, Dimensions & Product Range
Our precast solar ballast blocks are manufactured in a wide range of standard and bespoke sizes, offering developers and contractors the flexibility to precisely match foundations to project requirements.
The standard block measures 3,000mm × 500mm × 180mm and weighs 635kg, but the modular mould system allows us to cast blocks from 500mm to 1.5m wide, up to 6m long, and 150mm to 280mm thick. This flexibility ensures you can balance cost, footprint, and load capacity without overbuilding or compromising stability.
Because dimensions can be tailored to wind load testing and ground conditions, you get exactly the ballast you need for safe, efficient solar installations. Larger blocks offer a greater footprint for poor or uneven ground, while slimmer units are easier to handle and transport in high volumes.
| Length (mm) | Width (mm) | Height (mm) | Weight (kg) |
|---|---|---|---|
| 3000 | 500 | 180 | 635 |
| 3000 - 6000 | 1000, 1200 & 1500 | 100 | Varies |
| 3000 - 6000 | 1000, 1200 & 1500 | 150 | Varies |
| 3000 - 6000 | 1000, 1200 & 1500 | 180 | Varies |
A Partner You Can Trust
With over 18 years of experience supplying precast systems across the UK, we understand the needs of large-scale infrastructure projects. From solar developers to civils contractors, clients choose us for our technical expertise, reliable supply chain, and commitment to delivering on time and within budget.
“We approached JP Concrete to design and supply a large quantity of ballast blocks over a short period of time. The level of customer service was outstanding, staff were polite and dealt with our orders quickly and efficiently. The product was delivered as specified and on-time. In summary an exceptional service and we look forward to working with JP Concrete again.”
Lucinda Cheshire - Ikaros Solar
Handling & Installation
Cast-in lifting sockets with 2 × M16 swivel lifting eyes for safe handling.
Can be offloaded and placed in one movement using site plant.
Installed directly onto compacted Type 1 MOT base – no piled foundations required.
Modular system allows rapid installation, reducing programme time and costs.