What Does a Commercial Solar Consultant Actually Do? Just Another Day at the Office – Part One

A commercial solar consultant assesses land, rooftops or sites to determine whether solar, battery storage or a combination of the two is technically and commercially viable — covering grid capacity, planning constraints, energy demand and development structure — independently of any manufacturer, installer or developer. That's the job. Here's what it actually looked like on one recent site.

Sometimes, all you get is a red line on a drawing. No feasibility study, no proposed megawatt capacity, no grid assessment, energy model or carefully prepared development brief — just an email, an image showing the site boundary, and a fairly straightforward question: what's viable here? Solar? Battery storage? Or a combination of the two?

That was more or less how one recent conversation started.

The enquiry came from a land agent doing exactly what good land agents do. They understand land and development. They know how to identify opportunities, acquire sites, navigate planning and work out how land can be turned into something more valuable. They might look at a parcel of land and see housing, a commercial development, or where infrastructure, landscaping, biodiversity or public open space needs to sit. What they don't necessarily see is the energy system sitting underneath all of it — and, to be fair, why would they? Commercial solar, ground-mounted solar, battery energy storage, grid connections, private wire arrangements and energy infrastructure are specialist areas in their own right. That's where we come in.

A red line is often enough to start asking better questions

The initial information on this particular opportunity was incredibly simple: here are the site boundaries, what do you think? That was it. There wasn't an expectation that the site should support a certain number of megawatts, and nobody had already decided it had to be a solar farm or a battery storage project.

In many ways, that's exactly how I prefer to look at an opportunity. Start with the site, start with what's actually there, then work out what's possible — because one of the easiest mistakes to make in renewable energy development is deciding on the answer before you've properly understood the problem. A piece of land doesn't automatically become a solar farm because there's enough room to fit some panels on it. Equally, a parcel of land that looks fairly ordinary on a development plan can sometimes have far more strategic value once you start looking at what surrounds it.

That was the interesting part of this particular site. Within a relatively short conversation, several things started to become apparent: there were potential private-wire energy users immediately to the south of the land, there was potential to investigate improvements around existing electricity network infrastructure, and there was a wider residential development opportunity nearby. Suddenly, what had originally been viewed as essentially leftover land at the edge of a development became something very different. It became an energy opportunity.

The bit of land everyone else might have walked past

Without somebody looking at the site through an energy lens, there's a genuine chance nothing would have happened with it — it would simply have remained land beside the main development. That's probably the simplest explanation of what a good commercial solar consultant actually does. We see a different layer of the opportunity. A land agent sees land, a planning consultant sees planning, a developer sees houses, commercial buildings or whatever the primary development is intended to become. We're looking at the same plan asking different questions: where will the energy come from, where will it go, who nearby might use it, what electricity infrastructure already exists, what grid constraints could appear later, and could generation and demand be brought together? Could battery storage improve the opportunity? What happens if planning allows solar, and what happens if it doesn't? What are the second and third options?

That last point matters. Good energy consultancy shouldn't be about forcing a predetermined technology onto a site — it's about understanding the variables. On this project, for example, we could start looking at a number of different outcomes. If ground-mounted solar achieved planning permission, one route might open up: potential private-wire arrangements could become relevant, local energy users could become part of the commercial model, and battery energy storage might form part of the solution. But if solar planning didn't work, that didn't necessarily mean the entire energy opportunity disappeared. Could battery storage work independently? Where on the site could it sensibly go, and where should it definitely not go? In this case, one potential battery location could quickly be ruled out because of its proximity to residential development. These are the decisions that start turning a red line on a map into an actual development strategy.

Solar development is not about filling every available acre with panels

This is another area where experience matters. Someone unfamiliar with solar development can understandably look at a field, calculate the acreage and immediately start thinking about how much solar could physically fit inside the boundary. But the red line is only the beginning. What are the planning constraints? Where are the hedgerows? What ecological considerations need to be allowed for, what landscape buffers are likely to be required, what are the access constraints, and how will biodiversity and nature considerations affect the usable area? What's the relationship with nearby residential properties?

You very quickly move from "we have this much land" to "this is the part of the land that can realistically become an energy asset." Those are two very different things, and importantly, neither answer is necessarily bad. Sometimes reducing the theoretical size of a project actually creates a much better development — one with a better chance of achieving planning, one that works more comfortably with neighbouring uses, one that's easier to connect, one with a clearer commercial purpose. The job isn't to squeeze the maximum number of panels onto a drawing. The job is to find the best viable energy solution for that particular site.

Then there is the grid

This is where things often become much more interesting. There's a lot of discussion about the electricity grid at the moment, and quite rightly so, but grid discussions can become oversimplified. People hear that the grid is constrained and assume the answer is simply "you cannot connect." That's not how I look at it. The better question is: what's happening on this particular part of the network, and how does our proposed development interact with it?

Take a wider development where 30, 40, 60 or 80 new homes might eventually be built. At some point, those houses need electricity. What happens if, during the development process, the electricity network operator comes back with substantial reinforcement requirements? What happens if significant upgrade costs suddenly appear? That can materially change the economics of a development.

Now put a potential solar asset nearby. Add potential local off-takers, consider battery storage, look at existing electricity infrastructure — and suddenly the conversation becomes much broader than "can we build a solar farm?" You're looking at how local generation, local demand, storage and network infrastructure might interact. Could on-site or nearby generation reduce certain energy risks? Could a private-wire arrangement create value? Could energy infrastructure be considered earlier in the development process rather than treated as something to solve at the end? Could an apparent constraint actually become part of the opportunity? Those are the conversations worth having early, because discovering an energy problem when everything else has already been designed is usually considerably more expensive than thinking about energy at the beginning.

Creating value from something that was already there

I described this meeting afterwards as creating wealth from nothing. Strictly speaking, of course, it wasn't nothing — the land was already there, the potential energy users were already there, the electricity network was already there, and the development opportunity was already there. What was missing was somebody joining the dots. That's where a commercial solar consultant can create a disproportionate amount of value very early in a project, not by magically inventing something that didn't exist, but by recognising relationships that had previously gone unnoticed.

The land agent in this case was extremely good at what they do. They know how to buy land, they understand planning and development, and they know how to identify opportunities that other people might miss. What they openly recognised was that energy wasn't their specialist field — and that's exactly how good professional partnerships should work. You don't need to become an expert in everything. You need to know when another discipline should be brought into the conversation. For land agents, property developers, planning consultants and landowners, that can sometimes be as simple as sending somebody a red line drawing before deciding what to do next.

What does a commercial solar consultant actually look at?

The exact work depends entirely on the opportunity, and there's no single checklist that magically tells you whether every site works. But at an early stage, we may be looking at questions around:

• commercial solar feasibility
• ground-mounted solar potential
• battery energy storage systems
• electricity grid and DNO considerations
• potential private-wire connections
• nearby commercial or industrial energy users
• planning and development constraints
• site layout and usable land area
• residential proximity
• hedgerows, landscaping and ecological considerations
• future electricity demand
• potential development structures
• and the commercial routes available if the opportunity proves viable

The point isn't to do months of expensive work before anybody knows whether the basic idea stacks up. The point is to identify the key questions quickly. Sometimes the result is: yes, there's a real opportunity here and this is what we should investigate next. Sometimes it's: possibly, but only if these specific things can be resolved. And occasionally the most valuable answer we can give is: no, don't spend money pursuing this. That last answer might not sound particularly exciting, but preventing somebody from spending six figures chasing an energy project that never had a realistic chance of working is still value. Independent advice has to work both ways.

It is not about selling solar panels

That distinction matters. Our job at Independent Solar Consultants isn't to look at every available field, rooftop or industrial site and find an excuse to put solar panels on it. We're looking at the energy opportunity. Sometimes that will involve commercial rooftop solar, sometimes ground-mounted solar, sometimes battery storage, sometimes solar and battery together, sometimes private wire. Sometimes the biggest opportunity is actually understanding how an energy strategy fits into a much larger property or development plan — and sometimes the answer is to walk away.

That independence is important because the question at the beginning should always be "what makes sense here?" — not "how do we sell a predetermined product into this site?" Those are fundamentally different conversations.

Why land agents should think about energy earlier

This is probably the biggest lesson from this particular day at the office. If you regularly identify, acquire, sell or develop land, it's worth developing the habit of looking at energy potential earlier. Not every site will have an opportunity, and most certainly won't have the same opportunity, but energy should increasingly be one of the lenses through which land is considered.

Look beyond the red line. What sits next door? What's being built nearby? Where are the large energy users, and where's the electricity infrastructure? What demand is coming? Are there factories, warehouses, industrial estates, data centres, commercial buildings or other potential off-takers nearby? Could a piece of land that currently appears peripheral become strategically important to the wider scheme? You don't need to know the answers yourself — you just need to know when it's worth asking the questions. Because sometimes the difference between an ordinary piece of land and a valuable energy opportunity is simply whether the right person looked at it before everyone walked past.

Another day at the office

That was essentially this particular meeting. A red line arrived. We looked at the land, and we looked beyond the land. We identified the variables, ruled some things in and ruled some things out. We considered solar, battery storage and private-wire opportunities, and we looked at how the energy opportunity might interact with the wider project and its future electricity demand.

What started as "we have this piece of land, is there anything we could do with it?" became a much more interesting conversation. That, really, is what commercial solar consultancy looks like. It's not always standing in a solar farm wearing a hard hat — sometimes it's sitting around a table looking at a red line and asking the questions nobody else in the room knew needed asking. And every now and then, that's where you find the value everyone else has missed.

Frequently asked questions

What does a commercial solar consultant do? A commercial solar consultant assesses whether a site — land, rooftop or a mix of uses — can support solar, battery storage or both. That covers grid and DNO capacity, planning and ecological constraints, energy demand nearby, and the commercial structure that would make a project viable, all delivered independently of any manufacturer, installer or developer.

Do I need planning permission before getting a feasibility check? No. A feasibility review comes first. It identifies whether a site has a realistic chance of achieving planning and connecting to the grid before anyone spends money on formal applications or reports.

What's the difference between ground-mounted solar and rooftop solar? Ground-mounted solar is installed directly on land — typically on fields or brownfield sites — and is suited to larger-scale generation. Rooftop solar uses existing building roofspace and is usually smaller scale but avoids land-use and planning issues specific to ground-mount projects.

How do I know if my land is suitable for solar or battery storage? Suitability depends on factors including grid connection capacity nearby, planning and ecological constraints, proximity to residential property, and whether there are potential energy users — such as private-wire off-takers — close by. A short desktop feasibility review is usually enough to establish whether it's worth investigating further.

Got a red line drawing?

Send it over. Seriously. If you're a land agent, developer, planning consultant, property professional or landowner and you have a site where you think there might be an energy opportunity, you don't need to arrive with all the answers. You don't need to know how many megawatts it could support, and you don't need to decide in advance whether it should be solar, battery storage or both. You certainly don't need to commission half a dozen reports before having the first conversation.

Tell us what you're trying to achieve and get in touch with Independent Solar Consultants — because ultimately, what's the cost of a conversation about a potential opportunity? The more useful question might be: what could it cost you if nobody ever spots it?

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

Justin Dring is the founder of Independent Solar Consultants, a UK-based commissioning design engineer and independent technical adviser working across commercial solar, battery energy storage, grid connection feasibility and energy strategy for significant capital commitments. Vendor-neutral and independent from manufacturers and electricity suppliers, ISC provides evidence-based technical due diligence to landowners, developers, land agents, businesses and public sector bodies navigating major energy infrastructure decisions.