Stepnell Ltd is a construction contractor with a site at Holton Heath, Poole. To reduce operating costs and strengthen its environmental credentials, the company partnered with DES Renewable Energy to install a rooftop solar PV system that generates clean electricity onsite, lowers energy bills and supports its long-term sustainability goals.
Project overview
Stepnell Ltd commissioned DES Renewable Energy to install a 12.74 kWp solar PV system across its roof. The installation comprised a solar PV panel array totalling 12.74 kWp connected to a grid-connected solar inverter. The project aimed to reduce electricity costs, lower carbon emissions and enhance long-term financial sustainability.
Project details
- Company: Stepnell Ltd
- Location: Blackhill Road, Holton Heath, Poole, BH16 6NL
- Solar system capacity: 12.74 kWp
- Estimated annual generation: 12,103 kWh
- Installation type: Trapezoidal roof solar panels
- Project timeline: Delivered 2025, from survey to commissioning
The objectives
- Reduce electricity costs and dependence on grid energy
- Improve environmental sustainability by reducing the company’s carbon footprint
- Achieve long-term operational savings and financial returns
- Demonstrate responsible energy practices to customers, staff and stakeholders
The solution: bespoke assessment and design
DES Renewable Energy conducted a comprehensive assessment of roof space, structural considerations, sun exposure and interlocking constraints, ensuring optimal placement and system sizing to maximise energy production and long-term reliability.
The system was designed with a solar PV panel array totalling 12.74 kWp across the trapezoidal roof, with power conversion handled by a grid-connected solar inverter. The system integrates with the site’s existing electrical infrastructure for efficient energy management. DES Renewable Energy also ensured compliance with building regulations, electrical standards and industry best practices, obtaining all necessary permits and approvals for a fully compliant and safe installation.
Installation and completion
The installation was carried out with minimal disruption to day-to-day site operations. Panels were securely mounted, connected to the inverter and integrated with the existing electrical system. Comprehensive testing and commissioning verified the system’s performance, functionality and safety. From initial assessment to completed commissioning, DES Renewable Energy provided a turnkey solution ensuring optimal energy generation, regulatory compliance and sustainable operational savings.
The results
- Energy cost reduction: lower electricity bills and reduced reliance on grid energy
- Environmental impact: an estimated 12,103 kWh of clean energy each year, saving an estimated 2.5 tonnes of CO2 annually and supporting sustainability goals
- Financial returns: savings on energy costs contribute to long-term financial sustainability
- Public image: demonstrates responsible energy practices to customers, staff and stakeholders
At a glance
- A solar PV panel array totalling 12.74 kWp on a trapezoidal roof
- 12.74 kWp total system capacity
- A grid-connected solar inverter
- An estimated 12,103 kWh of clean energy generated per year
- Reduced electricity costs and carbon footprint
Our accreditations
We are MCS certified, which guarantees that our installations have been designed, installed and commissioned to the highest standard using only MCS certified products. We are also NAPIT certified, which confirms that we are certified to install and self-certify all of our electrical installations, and we comply with the Renewable Energy Consumer Code (RECC).
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You can see all our commercial case studies, or read about our recent installations for Newcastle Town FC’s training ground in Newcastle-under-Lyme and Thoulstone Park in Westbury.