Solar Panels for Farms: The Complete Guide for UK Farmers

Keeping a farm running takes energy. From grain drying and refrigeration to irrigation, livestock ventilation, workshops and offices, electricity supports much of the work that happens every day.

Yet energy costs have become one of the biggest challenges facing modern farming businesses. While fuel, fertiliser and labour often attract the headlines, unpredictable electricity bills can put significant pressure on a farm’s profitability. It’s why more farmers are looking at solar energy to reduce their reliance on the grid and take greater control of their long-term operating costs.

The potential savings can be substantial, but understanding whether solar is right for your farm takes more than a promising headline figure. Which buildings are suitable? How much could you realistically save? Would batteries be worthwhile, and what funding options could help? Above all, how can you tell whether the figures in a solar proposal stack up for the way your farm operates?

Why are more farms investing in solar panels?

Agricultural businesses are often particularly well suited to solar energy. Many farms have large roof areas that receive good levels of sunlight throughout the year. Barns, grain stores, machinery sheds and livestock buildings can provide significant space for solar generation without affecting day-to-day operations.

At the same time, farms are often substantial consumers of electricity. Ventilation systems, refrigeration equipment, milking parlours, irrigation pumps and grain drying operations can all contribute to sizeable energy bills. This combination of available roof space and ongoing electricity demand creates an opportunity to generate a significant proportion of that energy on-site rather than purchasing it from the grid.

For many businesses, the financial case has become increasingly attractive as electricity prices have risen over recent years. Generating your own electricity can help reduce exposure to future price increases while creating greater certainty around long-term energy costs.

There are also wider benefits. Solar can support sustainability objectives, help demonstrate environmental responsibility to customers and supply chains, and improve the overall resilience of the business.

Most importantly, however, successful solar projects are increasingly being viewed as commercial investments rather than environmental initiatives. The strongest projects are designed to deliver measurable financial returns while supporting the long-term goals of the business.

Are solar panels worth it for farms?

For many farms, the answer is yes. However, the real answer is more nuanced than that. The value of a solar installation depends on how your farm uses electricity, when that electricity is used, what you’re currently paying for power and how the system is designed.

Two farms with similar buildings can achieve very different results. A poultry farm with consistent electricity demand throughout the year may use a large proportion of the energy it generates directly on site. An arable farm with significant seasonal demand may see a very different usage profile. A dairy farm running milking and cooling equipment throughout the day presents another set of considerations altogether.

This is one of the reasons you should exercise caution over relying on generic solar calculators and industry averages to guide your decision making over an investment as significant as solar. Many proposals are built around assumptions rather than the reality of how a specific business operates. Yet farming and agricultural businesses rarely behave like the “average” commercial customer.

Seasonal activities, varying operational patterns and changing demand throughout the year can all have a significant impact on financial performance. That doesn’t mean solar isn’t worthwhile. In many cases, quite the opposite is true. It simply means that understanding whether solar is worth it requires a detailed assessment of your farm’s actual electricity consumption rather than a broad estimate based on roof size alone.

How much can solar panels save a farm?

The savings available from solar vary significantly from one farm to another. Several factors influence the outcome, including electricity consumption, energy tariffs, export arrangements, system design and whether battery storage is included.

The greatest financial benefit usually comes from using the electricity generated on site as it is produced. Every unit of solar electricity used by your farm is a unit that doesn’t need to be purchased from the grid.

To put that into context, many agricultural businesses are currently paying somewhere between 22p and 28p per unit for grid electricity. By comparison, a well-designed solar system can often produce electricity at a significantly lower lifetime cost. This difference can create substantial long-term savings, particularly for farms with high electricity consumption.

One example is a potato farming company based in north Norfolk , where a 331kWp rooftop solar installation was designed across agricultural buildings to align with operational demand. The system is expected to generate almost 294,000kWh of electricity annually and deliver estimated annual savings of more than £66,000.

Of course, not every farm will achieve results on that scale. The important point is that the potential savings are determined by the specifics of your site, your buildings and your energy usage. That’s why understanding the numbers properly before making a decision is so important.

What types of farms benefit most from solar panels?

Solar can be effective across a wide range of agricultural sectors.

• Arable farms often have extensive roof space across grain stores and machinery buildings, making them strong candidates for rooftop solar installations.
• Dairy farms typically have significant ongoing electricity requirements from milking equipment, cooling systems and associated infrastructure.
• Poultry units frequently have high and relatively consistent energy demand driven by ventilation, lighting and environmental control systems.
• Horticultural operations may benefit from offsetting energy costs associated with irrigation, refrigeration and processing facilities.
• Mixed farming enterprises can often spread solar generation across multiple buildings while supporting a diverse range of energy requirements.

Rather than asking whether your type of farm is suitable for solar, a more useful question is how your specific business consumes electricity and whether solar generation can be matched effectively to that demand. That’s where the strongest returns are typically found.

What factors affect solar ROI on a farm?

One of the biggest misconceptions about commercial solar is that savings are determined primarily by the size of the system. In reality, return on investment is influenced by a combination of factors, many of which have nothing to do with the number of panels installed.

Some of the most significant include:

• How much electricity your farm uses
• When that electricity is used throughout the day
• Seasonal variations in energy demand
• The tariff you currently pay for electricity
• Whether battery storage is included
• How much of the electricity generated can be used on-site
• The funding route chosen for the project

This is why two farms with similar roof space can experience very different outcomes. For example, a farm with high daytime electricity consumption may be able to use a large proportion of the electricity it generates, maximising savings. Another business may export more generated electricity back to the grid, creating a different financial profile.

Seasonal demand can also play a significant role. Grain drying operations, refrigeration systems and other agricultural processes often create peaks in electricity usage at different times of the year. Understanding these patterns is essential when assessing the likely performance of a solar installation.

The strongest solar projects are designed around how a farm actually operates rather than simply maximising the number of panels that can fit on a roof.

Do farms need battery storage?

Battery storage is one of the most talked-about areas of commercial solar, but it isn’t automatically the right choice for every farm. A battery allows electricity generated during the day to be stored and used later when solar production has reduced or stopped altogether. This can increase ‘self-consumption’ and reduce reliance on imported electricity from the grid.

For some agricultural businesses, particularly those with significant electricity demand outside daylight hours, battery storage can strengthen the financial case considerably. For others, the additional investment may not currently provide sufficient return to justify the cost.

The answer depends on how and when electricity is used across the business. A farm that consumes most of its electricity during daylight hours may already be making excellent use of its solar generation without the need for batteries. A business with substantial evening or overnight demand may benefit far more from storing excess energy for later use.

This is why battery storage should never be treated as a standard add-on. It needs to be assessed against the specific operating profile of the farm to understand whether it genuinely improves the financial outcome.

What grants and funding options are available for farm solar?

One of the reasons commercial solar has become more accessible in recent years is the range of funding options available to agricultural businesses. While grant availability changes over time, farmers may be able to access support through sector-specific funding schemes, regional programmes or wider business energy initiatives.

However, grants are only one piece of the puzzle. Many farm businesses choose to fund solar through asset finance, allowing the cost to be spread over an agreed period while preserving capital for other investments within the business.

Power Purchase Agreements (PPAs) may also be suitable in some circumstances. Under this arrangement, a third party funds and owns the system while the farm purchases the electricity generated at an agreed rate.

There can also be significant tax advantages associated with commercial solar investments, including capital allowances and other reliefs depending on the structure of the business and prevailing legislation. Because funding options, tax treatment and available support can vary considerably, it is always advisable to seek professional financial advice alongside a Solar Feasibility Analysis.

What questions should farmers ask before investing in solar?

The quality of the questions asked before a project begins often has a direct impact on the quality of the outcome. Before committing to a solar installation, it is worth taking time to understand exactly how the figures have been calculated and whether the proposal reflects the reality of your business.

Some useful questions to ask include:

• Has the proposal been based on actual energy consumption data?
• Does it account for seasonal fluctuations in electricity demand?
• Are all assumptions clearly explained?
• Have battery storage options been properly assessed?
• What warranties are included
• How will the system be monitored and maintained?
• What happens if the projected savings are not achieved?

A reputable installer should be able to answer these questions clearly and provide evidence to support the figures presented.

If you’re currently comparing proposals, our free guide, Does Your Solar ROI Sound Too Good To Be True?, explains some of the most common assumptions used in commercial solar modelling and the questions every farm business should ask before investing.

Solar is a long-term investment. Confidence in the numbers is just as important as confidence in the technology itself.

How do you know if solar is right for your farm?

The truth is that there is no meaningful shortcut to answering this question. Online calculators can provide rough estimates. Industry averages can offer broad guidance. But neither can tell you what solar is likely to achieve for your specific farm.

The only reliable way to assess the opportunity is through a Solar Feasibility Analysis that examines your actual energy consumption, seasonal operating patterns, electricity costs and future requirements using real data rather than assumptions.

This process should consider factors such as seasonal demand, energy tariffs, funding options, battery storage, export opportunities and future business plans. Only then can you build an accurate picture of what solar could realistically deliver.

For some farms, the result can be transformative. For others, the numbers may suggest a different approach or a different timescale. The important thing is making a decision based on evidence rather than assumptions.

Frequently Asked Questions

How much do solar panels cost for a farm?

The cost varies depending on the size of the system, the complexity of the installation and whether battery storage is included. Commercial agricultural systems can range from tens of thousands to several hundred thousand pounds. A Solar Feasibility Analysis is the best way to understand likely costs, savings and return on investment for your specific farm.

Can I put solar panels on a barn roof?

In many cases, yes. Barns are often excellent candidates for solar because they offer large roof areas with minimal shading. Structural suitability should always be assessed as part of the design process.

Do solar panels work in winter?

Yes. Solar panels generate electricity throughout the year. Generation levels are typically lower during winter months due to shorter daylight hours, lower sun angle (less direct ‘irradiance’) and more cloud cover, but systems continue producing energy.

How long do solar panels last?

Most commercial solar panels are designed to operate for 25 years or more. Many continue generating electricity beyond this period, although output gradually reduces over time.

Can farms get grants for solar panels?

Funding availability changes regularly and varies by region and scheme. Grants may be available in some circumstances, although many projects are funded through a combination of capital investment, finance options and tax incentives.

Is battery storage worth it for farms?

It depends on how the farm uses electricity. Battery storage can improve ‘self-consumption’ and reduce grid reliance, but the financial case should always be assessed using actual consumption data.

Want to know what solar could really save your farm?

Most solar proposals start with your roof. The problem is that your roof doesn’t determine your return on investment. Your energy consumption does.

The only reliable way to understand whether solar stacks up for your farm is through a Solar Feasibility Analysis that models your actual electricity data, usage patterns, tariffs and funding options.

A Power Different Solar Feasibility Analysis gives you a clear picture of the real costs, savings, payback period and long-term return before you commit to a system. If the numbers stack up, you’ll know exactly why. If they don’t, you’ll know that too.

Request your Solar Feasibility Analysis today and move forward with confidence.

Power Different – Solar Energy Built For Business

Power Different designs and delivers engineered commercial solar and battery storage systems for businesses that need reliable performance and clear financial outcomes.

We don’t do rough estimates or off-the-shelf designs. Every system is built around your actual energy data, giving you accurate costs, savings and return on investment before you commit.

Our engineering-led approach means higher quality, better performance and systems built to last because in solar, the detail is what makes the difference between a strong return and an expensive mistake.

From feasibility through to installation and ongoing support, we manage the entire process, whether you are looking for commercial rooftop solar, ground-mounted solar, battery energy storage solutions or an upgrade to your existing solar.

Start with the numbers

Our no-obligation Solar Feasibility Analysis gives you a clear, evidence-based view of whether solar stacks up for your business.

Request your Solar Feasibility Analysis or contact our team today.

Not ready for a Solar Feasibility Analysis yet?

Download our free guide: Does Your Solar ROI Sound Too Good To Be True?

Learn how to spot unrealistic savings claims, understand what drives solar ROI on farms and discover the questions every agricultural business should ask before investing.