At Independent Solar Consultants, we’ve seen first-hand how unreliable grid connections and expensive infrastructure affect businesses. We’ve also helped businesses take a completely different approach to their energy supply. Here are two real projects that show why energy resilience deserves a place in every business continuity plan.

Case Study 1: Six Months of Power Problems at a London Laundry

Picture a busy commercial laundry in London. Fifteen staff. Washing and drying equipment running all day.

Then, without warning, the machinery stops.

The lights are still on. Parts of the building still have power. But one of the three phases supplying the property has failed, and the essential three-phase machinery can’t run.

This wasn’t a one-off. The business saw roughly six to eight interruptions in a single month.

The fault wasn’t inside the laundry’s own installation. It was on the electricity distribution network, and other businesses on the same road were hit too.

Six months waiting for the grid to be repaired

In the business’s experience, the network operator initially disputed responsibility and suggested the problem might lie with the affected businesses. It took around six months for the network fault to be resolved.

In the meantime, production was interrupted again and again. With 15 employees, the consequences went far beyond lost electricity: wages to pay, orders to complete, customers to satisfy and deadlines to meet.

The real cost of a power cut isn’t the electricity you lose. It’s the business you can’t do while the power is off.

Why losing one phase is so disruptive

A lost phase is often worse than a full blackout. Single-phase loads keep running, so the building looks normal, but three-phase motors can stall or overheat if they try to run on the remaining phases. That is why well-protected sites use phase-failure protection to shut equipment down safely — which protects the machines, but still stops the work.

Could battery backup have protected the business?

Potentially, yes. A correctly engineered three-phase battery backup system could protect essential equipment from certain types of grid interruption, including the loss of a single phase.

But it would have to be designed around the machinery’s electrical demand, motor starting currents, protection requirements and the length of the interruptions. Simply adding solar panels and batteries would not automatically solve the problem — many standard systems don’t provide backup at all when the grid fails.

That is why we believe business continuity and energy resilience should be considered before a company invests in commercial energy infrastructure.

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Case Study 2: Avoiding an £80,000 Grid Connection With Off-Grid Solar and Battery Storage

Sometimes the challenge isn’t an unreliable connection. It’s the cost of getting one in the first place.

One of our clients was developing new business premises that needed a substantial three-phase supply — around 100 amps per phase. The site included sensitive IT equipment and several factory units with varying electrical loads.

The network operator quoted around £80,000 for the connection, involving works from an existing pole to the premises roughly 30–60 metres away. That was a significant cost before the business could even start trading.

What if we didn’t connect to the grid at all?

Rather than simply accepting the quotation, we looked at whether the business could run independently.

We had an advantage. We already understood the electricity demand from the client’s previous factory. We knew the business worked mainly in daylight hours, though its equipment had varying power requirements.

That opened the door to a different solution: commercial solar, battery energy storage and a small backup generator, designed as one integrated off-grid power system.

Solar panels on every available roof

This wasn’t a conventional installation designed for the neatest roof layout. Ground-mounted solar wasn’t suitable for the location, so we used the building roofs — several of them, facing different directions.

Conventional solar design wouldn’t choose that arrangement to maximise annual generation per panel. But our objective was different. Spreading panels across several orientations spreads generation across the day, uses the available roof space and maximises the energy available to run the business.

The battery system manages the gap between what the solar produces and what the site is using at any moment.

What happens in the dark winter months?

We added another layer of resilience: a small backup generator to support the site through long spells of poor solar generation, or when the batteries need extra charging. The business isn’t relying on sunshine alone.

In operation, we’ve seen the generator start on a handful of occasions during the darkest parts of winter. We haven’t observed the batteries becoming fully depleted. The business has kept running independently of the grid.

The commercial benefits

• An off-grid electricity supply for the premises
• The quoted £80,000 grid connection works avoided
• Solar generation spread across multiple buildings
• Battery storage supporting the factory’s varying demand
• Backup generation for periods of low solar
• A system designed around how the business actually operates

The best commercial energy solution isn’t always the one with the most panels or the biggest battery. It’s the one designed around how the business works.

Of course, avoiding an £80,000 connection charge doesn’t make an off-grid system free. Capital cost, maintenance, generator fuel, battery replacement and long-term running costs all need weighing up. That’s where proper feasibility work becomes essential.

Don’t accept the first connection quote without questions

Even where a grid connection is the right answer, the first quote isn’t always the final word. Quotes can include upstream reinforcement costs, and some of the work may be open to competition from accredited Independent Connection Providers. An independent review of the quote, the capacity actually needed and the alternatives can change the numbers significantly.

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Commercial Solar and Battery Storage: Building Business Resilience

For some businesses, commercial solar is mainly about cutting electricity bills. For others, battery storage helps manage peak demand and use more of their own solar. But where a power interruption would stop production, resilience may matter just as much.

There are four approaches worth investigating:

• Commercial solar PV reduces electricity bought from the grid and gives more control over long-term energy costs.
• Commercial battery storage stores solar generation or lower-cost electricity for when it’s needed.
• Three-phase battery backup can be engineered to keep essential equipment running through certain grid failures.
• Off-grid solar and battery systems provide an alternative where connection costs are excessive or no suitable connection is available.

Each one needs careful consideration of electrical demand, operating hours, roof space, site constraints and grid connection arrangements.

Independent Expertise in Solar, Grid Connections and Off-Grid Power

Independent Solar Consultants was founded by Justin Dring, an electrical and solar energy specialist with around 20 years of hands-on experience across grid-connected solar, commercial electrical infrastructure and off-grid power.

Justin’s work includes off-grid power projects in Africa, where reliable electricity can’t be taken for granted. Today that experience is applied to commercial projects across Manchester, the North West and the rest of the UK.

Our approach starts with understanding the business, not selling equipment. We investigate the electrical requirements, identify the constraints and work out which solutions are technically practical and commercially sensible. We’re vendor-neutral and independent of manufacturers and electricity suppliers — and we will tell you if solar or batteries aren’t right for your site.

Sometimes that means recommending commercial solar. Sometimes it means battery storage or a dedicated backup solution. And sometimes, as our off-grid factory showed, it means questioning whether a conventional grid connection is the right answer at all.

Is Your Business Too Dependent on the Grid?

If you run a factory, warehouse, commercial property or energy-intensive site, ask yourself: what would happen if your supply failed — or if the connection you needed became prohibitively expensive?

We can help you investigate your options before you commit to a major investment, with independent feasibility assessments, grid connection advice, commercial solar design, battery storage consultancy and off-grid energy solutions.

Book a discovery call with Independent Solar Consultants →

Frequently Asked Questions

Can a battery keep my business running during a power cut?

It can, but only if it is designed to. Many solar and battery systems shut down when the grid fails. A backup-capable system must be sized for your essential loads, motor starting currents and the length of outages you need to ride through.

What happens to three-phase machinery if one phase fails?

Three-phase motors can stall or overheat when running on the remaining phases. Phase-failure protection shuts equipment down safely, which protects the machine but still stops production. A three-phase backup system can keep essential equipment running through some of these faults.

Is going off-grid realistic for a UK business?

For the right site, yes. It works best where demand is mainly daytime, roof space is available and a backup generator covers long dull spells in winter. Feasibility work on your actual load profile is essential first.

Is an off-grid system cheaper than a grid connection?

Not automatically. Avoiding a large connection charge is one side of the sum. Capital cost, maintenance, generator fuel and battery replacement over the system’s life are the other.

Can I challenge a high grid connection quote?

Often, yes. Ask what the quote includes, whether reinforcement costs are driving it, and whether some of the work can be done by an accredited Independent Connection Provider. Checking the capacity you really need can also change the price.

How do I start an energy resilience assessment?

Start with your electricity data, operating hours and the equipment that must keep running. Contact Independent Solar Consultants for an independent review before committing to any investment.

Independent Solar Consultants — Independent advice. Independent investigation. Evidence before assumptions.

About Justin Dring Justin Dring is the founder of Independent Solar Consultants, a Manchester-born, engineering-led solar and commercial energy consultancy working across the North West and nationwide. Nottingham born, Sheffield raised and Manchester matured, Justin has around 15–20 years of hands-on solar delivery experience spanning domestic, commercial, ground-mount, off-grid and data centre energy projects.

His background includes large-scale solar delivery across council housing portfolios and public buildings in Gravesham, Middlesbrough, Wales, Leeds and Portsmouth, off-grid power work in Africa, and collaborative work with the University of Exeter and Cambridge.

ISC is vendor-neutral and independent of manufacturers and electricity suppliers. Justin advises organisations committing significant capital to energy projects — and will tell a client when solar or battery storage isn’t right for them.

Talk to Justin →