System Upgrades & Expansion

Solar panel technology has improved significantly over the past decade. Panels installed in 2014-2018 typically produce 250-300W per panel, while current panels deliver 400-500W+ from the same footprint. If your farm installed solar more than 5 years ago, there are likely substantial gains available through strategic upgrades — without replacing everything.

Inverter replacement is the most common upgrade. Solar inverters have a typical lifespan of 10-12 years, and newer models offer significantly better conversion efficiency (98%+ versus 95-96% on older units), integrated monitoring, and battery-ready configurations. Replacing an ageing inverter can improve system output by 3-5% while adding smart monitoring and battery compatibility for future expansion.

Adding panels to existing systems is straightforward when roof space permits. We assess your existing wiring, inverter capacity, and DNO connection to determine how much additional capacity can be added. Many farms originally installed smaller systems and now have the appetite — and the roof space on additional buildings — for expansion. New panels can often connect to existing inverters (if capacity allows) or to additional inverters on the same grid connection.

Battery retrofit is increasingly popular. Farms that installed solar 3-7 years ago are now adding battery storage to capture energy they're currently exporting at low SEG rates. We assess your existing system, install compatible battery hardware, and integrate smart energy management to optimise the combined system. Retrofitting batteries typically costs 10-15% more than installing alongside new solar, but the payback on the battery investment alone is often 6-9 years.

For farms with degraded panels showing hotspots, cracked cells, or significant output loss, we provide targeted panel replacement using current technology. Replacing the worst-performing 10-20% of panels on an older system can lift overall output by 15-25% at a fraction of full system replacement cost.