Cut Your Energy Bills - Start Today.

2,000+ Solar Installations Completed Across the North East.

CALL 0191 340 7001

Mr Brown – Solar Installation (Blyth)

7kW Solar PV System with Fox ESS EP11 Battery Storage

We installed a high-performance 7kW solar PV system for Mr Brown in Blyth, complete with a Fox ESS hybrid inverter and EP11 battery storage system. This setup was chosen to maximise annual energy production, boost self-consumption, and significantly reduce grid reliance.

The project also included a manual changeover switch, allowing the customer to maintain power during outages — an increasingly valuable feature for energy resilience.

Technical Information:

Solar Panels:JA Solar DeepBlue 500W
Number of Panels:14
Inverter:Fox ESS H1-6.0-E-G2 Hybrid Inverter
Battery Storage:Fox ESS EP11 (10.36kWh / 9.32kWh usable)
Mounting System:Renusol Roof Mounting Kit
Additional Items:Bird Mesh, New Distribution Board, Manual Changeover Switch (EPS)


Installation Data

Installed Capacity7 kWp
Orientation40°
Inclination25°
Postcode Region9E
Kk Value845
Shade Factor0.98
Estimated Annual Output5,800 kWh
Annual Consumption4,200 kWh
Self-Consumption (PV Only)1,559 kWh (37%)
Self-Consumption (With Battery)2,863 kWh (75%)


25-Year Financial Summary

These financial indicators help customers understand long-term savings and return on investment. They are essential measures widely used across the renewable energy industry.

Net Present Value (NPV) £24,972.84
NPV represents the value today of all future financial gains (energy savings) minus installation cost, adjusted for inflation. A positive NPV confirms this installation is a strong financial investment.
Discounted Payback Period 6–7 years
This accounts for inflation and provides a more realistic payback timeline than traditional "simple payback".
Internal Rate of Return (IRR) 17.4%
IRR represents the effective annual return on investment. A 17.4% IRR is outstanding, outperforming most traditional investments.


Project Gallery:

Cut Your Energy Bills - Start Today.

2,000+ Solar Installs Completed in the North East.

CALL 0191 340 7001


View more of our solar case studies.

We've helped homeowners across the North East cut energy bills and reduce carbon emissions with bespoke domestic solar systems, from family homes to larger residential properties. Alongside this, we've delivered projects for schools like Cragside and Dame Dorothy, community hubs such as Kibblesworth Millennium Centre and Alnwick Community Centre, local cafes, churches, and even national brands like Burger King. With major installs for organisations including Darlington College, Phillips Pet Supplies, and Collingwood Healthcare Services, our portfolio shows proven expertise across both domestic and commercial solar - providing tailored installations that deliver long-term savings and sustainability.

Ready to switch to solar? Request a quote.

To design and size your solar and/or battery system correctly, we need to know your annual kWh usage. This allows us to create a system that accurately matches your energy needs - reducing the electricity you buy from the grid, lowering your carbon footprint, and protecting you from rising energy costs so you save as much money as possible.

Rated best in North England by the Independent.


Independent Logo

"Sustainable Energy Engineering is based in North England and offers a comprehensive solar panel installation service. The family-run business has more than 20 years of experience and is TrustMark registered, which means homeowners who are taking advantage of the UK's solar incentives can use Sustainable Energy Engineering as their certified installed."


Meet the Team


Your local trusted solar panel installer.

With hundreds of five-star reviews since 2006, Sustainable Energy Engineering has built a reputation for quality, honesty, and reliability. Unlike many short-lived installers, we're here for the long haul - ready to support you long after installation. That's why so many customers choose us after their original installer disappears. Choose us for peace of mind, fair pricing, and expert solar solutions that last.