Anda House
How on-site solar created a new income stream while cutting carbon and energy costs for tenants
Industry
Commercial Property
Solution
On-roof Solar
System Size
33kw
The Challenge
Anda House is a multi-tenant commercial office building located within St Mellons Business Park. As a fully managed asset with shared facilities and communal areas, the landlord faced a growing set of pressures common across the commercial property market.
Sustainability was becoming increasingly important, not only due to evolving regulation and EPC requirements, but also as a means of future proofing the asset against tightening standards and shifting tenant expectations.
At the same time, competition for tenants was increasing. Occupiers were looking for buildings that could help them manage energy costs and meet their own sustainability targets more easily.
The challenge was therefore twofold:
- Improve the building’s environmental performance and long-term resilience
- Create a stronger tenant proposition that differentiated Anda House commercially
Any solution also needed to work within a live, multi-tenant environment and deliver clear financial justification for the landlord.
The Approach
Rather than treating solar as a standalone sustainability measure, Nuvolt worked with the landlord to identify how the building itself presented an opportunity.
Anda House’s roof space, operational profile, and tenant usage patterns meant it was well suited to on-site generation capable of offsetting a significant proportion of daytime electricity demand.
Nuvolt designed a bespoke on-site energy solution that aligned with how the building operates in practice. A 33.3 kW rooftop solar PV system was installed, sized specifically to match tenant demand during operational hours.
Crucially, the solution was structured so that electricity generated on site could be supplied directly to tenants. This transformed unused roof space into a revenue-generating asset, while allowing tenants to access lower-cost, clean electricity.
This was not an off-the-shelf installation. The system was designed around:
- Tenant energy demand profiles
- The landlord’s revenue and asset objectives
- Long-term performance, reliability, and compliance
Landlord outcomes
The project delivered benefits beyond simple energy savings.
- A new recurring income stream through the sale of on-site electricity
- Reduced exposure to volatile grid energy prices
- Improved EPC performance and strengthened sustainability credentials
- Increased long-term asset value and resilience
- A more competitive offering compared to neighbouring office buildings
- A differentiated proposition that supports tenant attraction and retention
By integrating energy generation into the asset strategy, sustainability became a value driver rather than a cost.
Tenant benefits
Tenants at Anda House benefit directly from the solution:
- Access to lower-cost electricity compared to grid supply
- Greater price stability and reduced exposure to energy market volatility
- Occupying a building that supports ESG and sustainability objectives
- Easier progress towards internal carbon reduction targets
This strengthens the landlord–tenant relationship and enhances the overall attractiveness of the building.
The solution in practice
- A 33.3 kW solar PV system installed on the roof of Anda House
- Clean electricity generated on site and distributed within the building
- Electricity supplied to tenants at a lower cost than grid tariffs
- A commercial model that delivers predictable, recurring income to the landlord
The system delivers an estimated three-year payback period, after which it provides ongoing financial returns.
Performance and environmental impact
- Estimated annual generation: 46.87 MWh
- Annual carbon reduction: 24,805 kg CO₂
- Significant reduction in reliance on grid-supplied electricity
Environmental performance is delivered alongside strong commercial outcomes.
Ongoing management
Nuvolt manages the system end to end, ensuring long-term performance and revenue protection.
This includes:
- Continuous system monitoring and performance optimisation
- Routine maintenance and electrical testing
- Panel cleaning to maintain generation efficiency
- Proactive issue identification to prevent performance degradation
By retaining operational responsibility, Nuvolt protects system output, extends asset lifespan, and ensures the solar installation continues to deliver consistent returns with minimal landlord involvement.
Delivered without disruption
Anda House operates for approximately 12 hours per day. Installation was carefully planned and phased to ensure:
- No disruption to tenant operations
- Public access points and communal areas remained open
- Health and safety standards were maintained throughout
Works were integrated into the building’s normal operation, demonstrating that on-site generation can be delivered effectively within live, multi-tenant environments
What this means for landlords
The Anda House project shows how commercial landlords can move beyond sustainability as a compliance exercise and instead use it as a strategic tool.
By tailoring the solution to the building and its occupiers, the landlord achieved:
- New income without sacrificing lettable space
- Improved sustainability performance and regulatory readiness
- A stronger tenant proposition
- A future-ready asset aligned with market expectations
“The primary objective for Anda House was to reduce the carbon footprint of the building and contribute to our sustainability goals. With the expert advice and bespoke design provided by Nuvolt, we implemented a 33.3 KW on-roof solar system.
This tailored approach not only met our unique requirements but also resulted in a remarkable 46.87 MWH of energy production and a swift 3-year payback period.
Additionally, we are now saving 24,805 KG of carbon emissions per annum.
Nuvolt's dedication to innovation and sustainability has been instrumental in our journey towards a greener future."
Terry Hill, Facilities & Property Manager
The Conclusion
The Anda House project demonstrates how commercial landlords can move beyond treating sustainability as a cost or compliance requirement and instead use it as a lever for long-term value creation.
By tailoring the solution to the building, tenant demand, and commercial objectives, Nuvolt enabled the landlord to transform unused roof space into a reliable, income-generating asset. The approach delivers predictable returns, strengthens the building’s EPC and sustainability credentials, and improves resilience against energy price volatility.
Crucially, this was achieved with minimal operational burden and no disruption to tenants, reinforcing that well-designed on-site energy solutions can enhance both financial performance and occupier experience.
For landlords seeking to future-proof their portfolios, increase asset value, and meet growing ESG expectations, the Anda House project provides a clear, practical example of how tailored on-site generation can deliver measurable commercial and environmental outcomes.
