Britain has finally woken up to solar

There is a point in every major technology shift when people stop asking whether it will become mainstream and start asking what happens next. I believe solar energy in Britain is reaching that point now.

If somebody had asked me in 2021 where I believed the solar industry would be five years later, I would have said that a major shift was coming. I did not believe the story would simply be about better solar panels. I believed energy prices, battery storage, electric vehicles, smart meters, time of use tariffs and public awareness would eventually meet at the same point.

My view was that people would begin to look at electricity differently. Five years later, I think that transition is happening in front of us. Britain is finally entering the solar market properly, and the most interesting part is not simply the number of panels being fitted. It is the way the meaning of solar itself is changing.

Today we are talking about batteries, hybrid inverters, module level monitoring, export optimisation, smart tariffs, EV charging, heat pumps, commercial energy management and much more sophisticated grid connections. Solar is becoming the starting point of an energy system rather than the end product.

The numbers now speak for themselves

Government data published in August 2026 shows nearly 172,000 solar installations fitted across the UK since the beginning of the year. Nearly 28,000 installations were completed in July alone, with more than 19,800 rooftop installations during the month. That is approximately one rooftop installation every two minutes.¹

The MCS figures are equally important. Around 210,000 certified low carbon installations were recorded in the first half of 2026. Solar PV accounted for almost 150,000 of them, while battery storage reached around 36,000 installations. Battery installations were nearly double the comparable level a year earlier, and 92% of batteries were installed alongside solar.⁶

Figure 1. Certified solar PV and battery installations in H1 2026. Source: MCS industry data.

For me, the battery figure is particularly revealing. It suggests customers are not simply asking how much electricity their roof can generate. They are increasingly asking how much of that electricity they can keep, when they can use it, and how much control they can have over their overall energy costs.

I have watched the customer conversation change

One of the biggest changes I have personally experienced is not technological. It is the way customers speak to us. Years ago, many conversations started with a simple question: how much will I get paid for my solar panels? During the Feed in Tariff era, that was entirely understandable. The financial proposition was clear and the incentive helped build confidence in the market.

When FIT closed to new installations, some people assumed the best days of UK solar were behind us. Instead, the industry evolved. The Smart Export Guarantee arrived. Electricity prices became more important. Batteries improved. EV ownership increased. Smart meters became normal and electricity tariffs became more sophisticated.

Today I hear very different questions. Customers ask whether they can charge a battery overnight, whether the house can run from stored electricity in the evening, whether another battery can be added later, whether an EV can be charged from solar, how much the DNO will allow them to export and whether the system can automatically make decisions based on tariffs and predicted generation.

That change in conversation tells me more about the maturity of the market than almost any single statistic. Customers are starting to understand that solar is not only about producing electricity. It is about managing electricity.

From Feed in Tariffs to intelligent tariffs

I see the UK solar story in several phases. The first was solar as an investment, supported by Feed in Tariffs. The next was solar as protection from rising electricity prices. Then came solar plus storage, allowing customers to retain more of what they generated. The phase we are entering now is intelligent energy, where generation, storage, EV charging, tariffs and energy management begin to operate together.

A kilowatt hour is still a kilowatt hour physically, but financially its value can vary depending on when it is generated, imported, stored or exported. That changes the mathematics behind solar. A professional proposal should no longer stop at annual generation. It should increasingly consider self consumption, battery strategy, import tariff, export tariff, EV demand, future electrification and the customer’s likely electrical requirements several years from now.

Electricity prices keep energy independence on the agenda

From 1 October to 31 December 2026, Ofgem’s average electricity unit rate for a standard variable Direct Debit tariff is 26.32 pence per kWh, with an average standing charge of 54.83 pence per day. The typical dual fuel price cap is around 4% higher than the previous quarter. At the same time, VAT on domestic electricity is removed from 1 October 2026 to 31 March 2027, while gas continues to carry 5% VAT.⁴

The policy matters beyond the immediate bill saving. Britain is trying to electrify more of the economy. Electric vehicles need electricity. Heat pumps need electricity. Data centres, cooling, manufacturing and digital infrastructure all increase electricity demand. As the country becomes more electrified, the quality and cost of electricity infrastructure become even more important.

Plug in solar is small in power, but large in meaning

On 27 August 2026, compliant plug in solar became legal across Great Britain. These systems can produce up to 800 W. Government estimates suggest they could provide up to 20% of an average home’s electricity consumption in suitable conditions and save some households up to around £110 a year.²

Some experienced installers may look at 800 W and think the technology is too small to matter. I think that misses the more important point. The significance is accessibility. A technology that once required a full rooftop project is becoming available in another form to renters, apartment residents and households that may never have considered conventional solar.

Once generating your own electricity becomes familiar, the cultural barrier changes. Solar stops feeling unusual. That can have a much bigger effect on the long term market than the output of one small system.

Accessibility does not remove the need for engineering

Plug in solar also demonstrates why competent electrical design remains essential. A plug in device is still generation and must be considered alongside other generation at the property. For example, an 800 W plug in system combined with a conventional 3.68 kW single phase inverter results in 4.48 kW of generation. Depending on the design and network requirements, that can move the project beyond a simple G98 notification and into G99 or an appropriately designed G100 export limitation solution.

The easier energy technology becomes to buy, the more important professional integration becomes. A customer may see separate products: solar panels, a battery, an EV charger and a heat pump. An engineer needs to see one electrical ecosystem.

The next generation is not really about the panel

Solar modules will continue to improve. We will see higher efficiency, greater power density, better low light performance, improved warranties and new cell architectures. But I believe some of the most important developments over the next five years will happen behind the panel rather than inside it.

The intelligence connecting everything together is where the real transformation could occur. An advanced energy management system can increasingly understand tomorrow’s weather, predicted solar generation, the customer’s normal consumption, battery state of charge, EV requirement, import tariff, export tariff and grid constraints.

On a sunny day, a system might deliberately leave space in the battery for free solar generation. On a cloudy day, it may choose to charge overnight when electricity is cheaper. At another time it may retain stored energy for an expensive evening period or export when the value is attractive. The hardware produces electricity. The intelligence decides what that electricity should do.

Figure 2. The future building as an energy asset: generation, storage, electrification, tariffs and grid interaction managed as one system.

Government ambition is becoming much more serious

The UK Government’s Solar Roadmap makes the scale of the national ambition clear. The Clean Power Action Plan calls for solar capacity to rise from more than 18 GW to around 45 to 47 GW by 2030. The roadmap also notes that additional rooftop deployment could potentially take total capacity to around 54 to 57 GW, subject to system need and the project pipeline.³

The roadmap goes further. Under the upper end of its current policy scenario, with favourable economic and infrastructure conditions, planned connection reform, sufficient skills, supply chain and finance, solar could reach around 75 GW by 2035. That is not a guaranteed forecast, but it illustrates the scale of what is possible if the enabling conditions are delivered.

Figure 3. Government roadmap capacity ranges and the upper current policy scenario. The 57 GW level is a possible 2030 outcome, not a forecast.

This is no longer a niche technology sitting outside national energy strategy. Solar is becoming part of infrastructure strategy. The challenge is that policy ambition alone cannot deliver tens of gigawatts of new generation. The infrastructure has to be ready for it.

Commercial rooftops could be one of Britain’s biggest opportunities

Much of the public conversation still focuses on residential solar, but I believe commercial rooftops represent one of the strongest opportunities in the UK market. Drive through almost any industrial estate and look upwards. Warehouses, factories, hotels, schools, sports facilities, retail units and care homes all contain large areas of roof that may be capable of generating electricity.

For a commercial building, the economics can be particularly interesting because daytime electricity demand often overlaps with solar generation. A warehouse can become an energy asset. A factory can reduce daytime imports. A hotel can combine generation with storage and EV charging. A sports venue can connect renewable generation with community facilities and future charging infrastructure.

At Sol4r Energy we do not think these projects should be sold from a standard template. Every building has a different consumption profile, roof structure, network connection, operating schedule and future plan. That is why commercial solar increasingly becomes an energy engineering exercise rather than a simple equipment sale.

Figure 4. Sol4r Energy directional opportunity assessment. Scores are an internal strategic view, not market forecasts.

The grid may be the most important part of the solar revolution

This is the part of the solar story that is often least visible to customers. Better panels and larger batteries do not remove the need for a capable electricity network. Britain’s grid was designed around a predominantly one way model: large generation, transmission, distribution and consumer. Distributed generation changes that relationship.

A commercial site may import hundreds of kilowatts at one moment and export at another. A neighbourhood can contain hundreds of solar systems and batteries. EV charging hubs can add major new demand. Large batteries can switch between importing and exporting. All of this means the grid has to become more flexible, more digital and more strategically planned.

More than 700 GW waiting in the old connection queue

NESO says the old electricity connections queue grew to more than 700 GW, around four times what Great Britain needed for 2030. Some ready to build projects were facing waits of up to ten years. The problem was not a shortage of ambition. It was that speculative and unready projects occupied places in a process that effectively operated on a first come, first served basis.⁵

This is where installation becomes engineering

On larger projects, the difficult part is not always fitting the solar modules. The project can be shaped by available export capacity, DNO requirements, G99 applications, G100 export limitation, single line diagrams, protection settings, transformers, metering, witness testing and commissioning. These issues are not background paperwork. They can determine whether a project is technically and commercially viable.

This is one of the reasons I believe renewable energy businesses need to understand both sides of the transition: generation and electrical infrastructure. Installing panels is one capability. Engineering a system that works intelligently with the building and with the grid is another.

The customer is becoming a prosumer

For most of modern history, electricity moved through a relatively simple chain: power station, transmission network, distribution network, building, consumer. The consumer used electricity and paid for it.

Today a building can generate electricity, store it, use it later, charge a vehicle and export surplus power. Tomorrow, the same building may respond automatically to tariffs, weather forecasts and grid signals. That is why the word “prosumer” matters. The customer is no longer only a consumer. They can become both producer and consumer.

At scale, millions of these assets could become part of Britain’s electricity infrastructure. That does not make the grid less important. It makes the grid more important because it becomes the platform connecting all of those distributed assets.

How Sol4r Energy sees the market evolving

At Sol4r Energy Ltd, this change in the industry is influencing how we develop the company. Our objective is not simply to install a greater number of panels. We are preparing the business for a market where customers increasingly expect complete energy systems.

Figure 5. Sol4r Energy directional assessment of the shift from solar only to integrated energy systems. This is an internal scenario, not measured market share.

Our own assessment is that the proportion of customers interested in integrated solar, storage and smart energy control will continue to rise. The precise percentages will vary by segment, but the direction already feels clear from the conversations we are having with homeowners and businesses.

Commercial solar and larger energy projects

We are increasing our focus on commercial projects where energy analysis, grid connection capability and structured project delivery become much more important. That means strengthening our capability around larger inverter systems, multiple supplies and MPANs, DNO coordination, export limitation, commissioning and commercial monitoring.

Battery storage

We increasingly see batteries as part of the core design discussion, not simply an optional accessory. The correct battery is not automatically the largest battery available. It should be sized around consumption, generation, tariffs, expected expansion and the customer’s priorities.

Grid engineering

G99, G100, single line diagrams, DNO applications, commissioning requirements and network coordination are becoming increasingly important parts of our operation. As systems become larger, the quality of the grid work can have as much influence on the outcome as the choice of panel or inverter.

Technology partnerships and next generation products

The market is moving quickly, so we want to understand new technologies early. We are working more closely with manufacturers and technical teams around intelligent monitoring, next generation panels, battery systems, module level visibility and commercial energy management. The objective is not to install something simply because it is new. The test should always be whether it makes the system safer, smarter, more transparent, more productive or more valuable for the customer.

Figure 6. Sol4r Energy internal strategic technology assessment for 2030. Scores indicate relative strategic importance, not predicted market share.

We also have to prepare our own company for a bigger industry

A growing market creates an operational challenge for every renewable energy company. It is easy to concentrate on more enquiries, more installations and more turnover. But if operations do not grow with sales, the customer eventually feels the pressure.

For me, the next stage of Sol4r Energy is therefore also about organisation. Every project should be planned before the team arrives. The equipment should be known. Deliveries should be coordinated. The tools and access requirements should be clear. The expected duration should be realistic. Commissioning should be planned. Outstanding items should be closed quickly and the customer should receive a proper handover.

Growth without operational discipline eventually becomes a weakness. The companies that earn long term trust will be the ones that can combine innovation with consistency.

Quality will matter more as the market grows

Rapid growth attracts competition. Competition is healthy. Poor standards are not. The solar industry cannot afford to become a race to install the cheapest possible system. Panels remain on roofs for decades. Batteries are substantial electrical devices. Inverters manage high power. Commercial systems may operate at hundreds of kilowatts or more. Documentation, protection, commissioning and aftercare all matter.

One poor installation does more than damage one company. It damages confidence in solar generally. That is why I believe the industry needs to compete on engineering, safety, design, transparency, aftercare and long term performance, not only on price.

The customer should understand what they are buying

A customer should know why a particular number of panels has been proposed, why the inverter size has been selected, why the battery capacity makes sense, what the DNO has approved, what the export limitation is, how the tariff affects the economics, how the monitoring works and what happens after commissioning.

An informed customer is more valuable than a customer who was simply shown the lowest price. Education and proper handover will become increasingly important as energy systems become more complex.

Designing for the building five years from now

One of the questions I increasingly think we should ask is: what will this building require in five years? A customer may not own an electric vehicle today, but they may buy one. A business may add cooling, machinery or charging infrastructure. A home may move from gas heating to a heat pump. Battery capacity may be expanded. Tariffs and flexibility markets may change.

Good engineering should therefore think beyond today’s electricity bill. Cabling, distribution equipment, inverter architecture and network applications can all affect how easily the system can be expanded later. Designing only for today can create unnecessary cost tomorrow.

My five year view of the UK solar industry

This is our directional assessment, not an official forecast. The exact timing will depend on technology costs, network investment, policy, customer behaviour and the speed at which energy markets evolve. But the underlying direction looks increasingly clear.

The bigger picture is much more than solar

When I look at where renewable energy is going, I do not see a future made up simply of millions of solar panels. I see a connected system. Solar generates. Batteries store. EVs consume and may eventually supply. Heat pumps electrify heating. Smart tariffs give electricity a time value. Software optimises decisions. The grid coordinates everything.

Put those pieces together and buildings begin to become energy assets. Homes and businesses are no longer passive endpoints of the electricity network. They can generate, store, respond and participate.

800 watts today. An intelligent energy network tomorrow.

This is why even something as small as the introduction of plug in solar interests me. An 800 W kit will not transform Britain’s electricity system by itself. But it tells us where society is heading. Generation is becoming more accessible. Battery storage is becoming more normal. Commercial rooftops are becoming valuable. Government is targeting tens of gigawatts of new capacity. The grid is being reorganised and reinforced. Consumers are becoming more informed and software is becoming more intelligent.

Slowly, slowly, all of the pieces have been coming together. Then one day we look around and realise the market has changed completely.