2,000+ Solar Installs Completed in the North East.
In recent years, there have unfortunately been many companies that have traded in the Renewable Sector for a few years and then disappeared, leaving many customers with nowhere to turn for after-sales questions or service issues. We are proud to say that we have been trading since 2006. Our customers are relieved to know they have a friendly, knowledgeable company they can trust and rely on, just a phone call away.
When a Northumberland client faced faults with a large ground-mounted system, we stepped in to repair inverters, replace storm-damaged panels, and fix setup errors that were costing them thousands in lost generation. If your solar system needs attention, trust our experienced team for reliable servicing and support. See the full transformation in our video case study.
From Newcastle and Sunderland to Durham and Washington, Sustainable Energy Engineering provides trusted solar maintenance and repair services to keep your system running at peak performance. Whether you own a residential setup or a large commercial array, our skilled team ensures your solar investment continues delivering the returns you expect.
Our comprehensive annual service covers everything needed to protect and optimise your solar PV system:
Even well-installed solar systems can develop faults over time - especially inverters. If your system is underperforming or showing an error, our team can quickly diagnose the issue, often resolving it the same day.
We can provide a temporary inverter while your existing unit is being repaired or replaced, ensuring your Feed-in Tariff payments and system generation continue without interruption.
While MCS and manufacturers recommend annual servicing, many systems go unchecked for years - potentially losing you thousands in missed generation. Don't let a minor fault turn into a major financial loss. Let us help you maximise your returns and protect your long-term investment.
We offer a sensible servicing approach for homes and a proactive plan for larger commercial installations across the North East.


2,000+ Solar Installs Completed in the North East.
Following a period of severe weather, our team was called out to Eslington Farm to inspect and make good a large 100kW ground-mounted solar PV system that had suffered significant storm damage. Upon inspection, multiple faults were discovered across inverters, panel arrays, and cable systems.
Our assessment revealed blown-off panels, sheared DC cabling, blown fuses in multiple inverters, and various mechanical and electrical issues that had developed over time. We responded swiftly with a plan to carry out comprehensive fault diagnosis, repairs, and recommissioning of affected equipment — all while preparing the system for long-term performance and safety.
Work was carried out by a team of six engineers and included replacing a full inverter unit, repairing others, panel swaps, and safety-critical upgrades such as cable tie-backs, waterproofing, mechanical timer installation, and frame reinforcement. We also assessed underlying faults and prepared the system for ongoing maintenance during future service visits.
| System Size: | 100kW Ground-Mounted |
| Inverter Repairs: |
Replaced Inverter 1 with 25kW Fox 3-phase unit Replaced fuses in Inverters 2 & 3 and verified generation |
| Panel Work: | Swapped 3 damaged panels from spare modules |
| Monitoring: | Reset/assessed Carlo Gavazzi Generation Meter |
| Mechanical Repairs: |
Panel alignment adjustment (2 hours) Fitted mechanical timer Secured all panels with self-tapping screws Installed IP-rated cable joints and metal tie-wraps |
| Date Completed: | Post-Storm 2024 |
With hundreds of five-star reviews spanning decades, 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.
SUSTAINABLE ENERGY ENGINEERING LIMITED
Unit 11 Whitworth Road
Armstrong Industrial Estate
Washington
NE37 1PP
PHONE: 0191 340 7001
MOBILE: 07814 642 103
EMAIL: info@susenergy.co.uk

© Sustainable Energy Engineering Limited. All Rights Reserved.
Company Registration Number: 5942135. VAT Number 939 5459 70. Established in 2006.
Design & Marketing by Semtelligence.