Large Scale Solar PV Systems for Landowners and Developers
Ground-mounted solar farms, utility-scale BESS and large commercial solar energy projects.
Large Scale Solar is SPI’s specialist offer for large-scale solar development and delivery. We work with landowners, developers and infrastructure clients, bringing engineering management capability and project delivery discipline to some of the most complex renewable energy opportunities in the UK market.

Large Solar Panel Projects: A Growing Market That Needs Proper Engineering Management
The UK large-scale solar market has matured significantly. Solar power is now one of the lowest-cost forms of electricity generation in the country, and the government’s ambition to quadruple solar capacity by 2035 has created a substantial development pipeline.
Ground-mounted solar farms, co-located battery storage, private wire schemes for industrial clients and grid-scale BESS installations are mainstream infrastructure investments attracting serious capital. But the complexity of grid connection, planning and financing has increased considerably alongside the opportunity.
Large Scale Solar brings the project delivery discipline of SPI’s infrastructure background to this market. The same programme governance, technical oversight and interface management that SPI applies to major rail, highways and energy schemes translates directly to large-scale solar development.

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Large Scale Solar Services
Ground-Mounted Solar Farms
Design, planning support, grid connection management and EPC delivery for ground-mounted solar installations. Engineering management discipline applied to the full development and delivery process.
Co-Located Battery Storage
The most valuable large-scale projects combine generation with storage. Co-located BESS enables grid services participation, improves merchant revenue profiles and addresses curtailment risk. Large Scale Solar designs and delivers co-located projects.
Landowner Advisory
Independent advisory for landowners considering a solar lease or option agreement. Lease terms, developer selection, planning considerations and long-term operational arrangements, before commitments are made.
Private Wire Solar for Industrial Clients
Large industrial clients with significant energy loads can benefit from dedicated solar generation connected via private wire. For the right load profile and available land, this fundamentally changes the economics of industrial energy.
Large Scale Solar Energy Systems Need More Than Just an Installer
A ground-mounted solar farm is an infrastructure project. It involves land agreements, grid connection applications, planning processes, multi-contractor construction programmes, power purchase agreements and lender due diligence.
Most solar installers are not equipped to manage this complexity. SPI is. As a group that has delivered infrastructure and engineering management services across £45bn of capital projects in Rail, Highways, Aviation, Utilities and Energy, we understand how to run complex, multi-disciplinary programmes. We apply that capability to large-scale solar, where it makes a material difference to outcomes.
We are building our large-scale track record deliberately, taking on projects where we can bring genuine value and managing them with the rigour the sector demands. If you need a business with dozens of completed utility-scale projects, we will tell you honestly where we are. If you need a technically capable, straight-talking delivery and advisory partner, we are worth talking to.

How Large Scale Solar Projects Progress With SPI

Working on a large-scale solar project?
FAQs
For SPI, large-scale solar refers to ground-mounted solar farms, projects above 500kWp and utility-scale BESS installations. Rooftop commercial solar projects above 500kWp are covered on our Commercial Solar PV page.
Grid connection timescales have extended considerably in recent years. In some areas, connection dates are being offered in the mid-2030s for projects applying today. Early pre-application engagement with the network operator is essential.
A private wire scheme connects a solar installation directly to an industrial or commercial facility via a private cable, bypassing the public distribution network. This avoids grid use-of-system charges on the energy consumed directly, which can significantly improve project economics.
Yes. Ground-mounted solar farms typically require planning permission. Projects above a certain generating capacity threshold are determined by the Planning Inspectorate rather than the local planning authority.
Yes. SPI provides independent landowner advisory, helping you understand what developers are proposing and whether the terms are reasonable before any commitment is made.