For businesses where a grid connection is unavailable, prohibitively expensive or unreliable, off-grid and micro-grid solar offers genuine energy independence. Novalux Solar has designed micro-grid systems for some of the UK’s most remote and grid-constrained agricultural and commercial sites — delivering reliable, low-cost power without dependence on the national grid.

What is an off-grid solar PV system?

An off-grid solar system generates and stores all electricity on-site, with no connection to the national grid. Solar panels charge a battery bank during daylight hours; the battery then supplies power during the night or on low-generation days. For sites with sufficient roof or ground area and predictable demand, a well-designed off-grid system can meet 100% of energy requirements year-round.

What is a micro-grid?

A micro-grid is a localised energy system comprising solar panels, battery storage, inverters and an energy management system (EMS) that operates independently — or in controlled connection — with the main grid. Micro-grids are used where multiple buildings or loads need to be served from a single generation source, or where grid backup is required alongside primary off-grid generation.

Novalux Solar designs micro-grids for farms with multiple buildings, industrial campuses, estates and rural commercial sites — providing reliable, managed power across the entire site from a single integrated system.

Who benefits from off-grid and micro-grid solar?

Off-grid vs grid-tied solar — which is right for your site?

Grid-tied systems are generally more cost-effective where a reliable grid connection exists, as they allow surplus generation to be exported and avoid the need for large battery banks. Off-grid systems make financial sense when the cost of a new or upgraded grid connection exceeds the cost of an off-grid system — which is increasingly common for remote agricultural and rural commercial sites.

Novalux Solar will assess both options for your specific site and provide a clear financial comparison, so you can make an informed decision based on total cost of ownership rather than upfront capital alone.

Battery storage — the heart of an off-grid system

The battery bank is the most critical component of an off-grid or micro-grid system. Novalux Solar specifies lithium iron phosphate (LFP) batteries for off-grid applications, offering superior cycle life (6,000+ cycles), safe chemistry and reliable performance across UK ambient temperatures.

System designs range from 50kWh for small farm outbuildings to 600kWh+ for large agricultural or industrial micro-grids. Battery sizing is determined by your demand profile, seasonal generation variation and required autonomy (the number of days the battery can power the site without solar input).

Hybrid systems — the best of both worlds

Many sites benefit from a hybrid approach: a grid connection is retained as backup, but the solar and battery system is designed to meet the vast majority of demand without drawing from the grid. This provides energy security and cost savings while avoiding the oversizing required for a fully off-grid solution.

Novalux Solar designs hybrid systems with smart energy management — automatically optimising between solar generation, battery storage and grid import based on energy prices, demand and weather forecasting.