A guide to decentralised energy for businesses: An empowering future?

If you’ve never heard of decentralised energy, you might be wondering why it matters to business owners. Well, do you or anyone you know have solar panels installed? As it stands, solar panels are part of a decentralised system, so it’s closer to home than you’d think.

But on a larger scale, the idea of decentralised energy is quite a complex one, so let’s break it down, to discover what it is and how it’s changing energy production globally.

Five-point summary on decentralised energy for business

• Decentralised energy involves generating power close to where it's used, often using renewable sources.
• Using a decentralised system over a centralised system can improve a country's energy resilience, lower costs for businesses and homeowners, and reduce emissions.
• Barriers to a fully decentralised system include high initial costs, integration complexities, weather dependence, and regulatory issues.
• All kinds of businesses can benefit from this type of system, but it may benefit those in manufacturing, off-grid businesses, and local communities the most.
• Grants and environmental tax incentives can support decentralised energy adoption and many countries are considering a fully decentralised system to help reach sustainability targets.

What is decentralised energy?

Decentralised energy – also known as distributed, local or on‑site generation – is power that is generated close to where it will be used rather than coming in from a large, central power station. This type of generation is often done on a small or medium scale and, more often than not, includes renewable or low‑carbon energy systems.

Solar, wind power, small hydro, biomass, and even combined heat and power (CHP) are renewable energy sources commonly used to generate decentralised energy.

In a business context, decentralised energy is usually designed to:

• Cover a portion of your site’s electricity or heat demand
• Reduce the amount of power you draw from the grid at peak times
• Give you more control over costs, resilience and sustainability targets

What is a decentralised energy system?

A decentralised energy system refers to a network of smaller, local energy sources close to the point of consumption. The network produces decentralised energy, unlike centralised power generated from large power plants, which travels a long distance to the point of use.

Using decentralised energy often leads to better energy security because you’re not vulnerable to failures from The National Grid, as it’s not solely relying on it. It also produces fewer emissions if renewable, low-carbon energy sources are used, making it great for businesses that want to generate their own power to lower their carbon footprint.

A decentralised system might include: rooftop solar, on‑site batteries, CHP units, heat pumps and smart controls, all connected to your existing supply. In many cases, you still stay connected to the main grid, but you rely on it less and use it more flexibly.

Does the UK have a decentralised energy system? 

As it currently stands, the UK has a hybrid system with long‑standing centralised elements.

Historically, the system has been centralised, with most homes and businesses linked up to large power plants that generate and send power across the country. But small‑scale renewable energy systems are increasing as we work as a nation to hit our net zero target.

The latest Energy Trends Report reveals that: "Production from renewable technologies in 2024 increased 7 per cent to a record 144.7 TWh, and a record share of 50.8% of electricity generation, passing half of generation for the first time."]

These systems allow those using them to generate and consume their own energy and sell the excess back to the grid through schemes like the Smart Export Guarantee (SEG). As these types of systems increase, our centralised system becomes more fragmented, and we move towards a more decentralised energy system. As greener electricity grows, more local grids (or mini‑grids) are needed to support our infrastructure and ensure it can stand the test of time.

Government policy is also pushing more local, flexible energy – for example, through smart meters, flexibility markets and support for on‑site generation and storage for businesses.

What countries are using a decentralised energy network?

Many European countries have set ambitious sustainability targets nationally as they work towards net zero. Although decentralised systems are complicated to get right, they are needed if we want a 100% green future globally. 

Some countries that are already incorporating these include:

UK

The UK is moving towards a more decentralised energy system. It has historically relied on centralised power plants, but smaller, localised energy sources are becoming more common. This trend is driven by the need to reduce carbon emissions, improve energy security, and increase community control over energy production.

Here are some ways the UK is using decentralised energy:]

• Local generation through renewables – A growing number of homes, businesses, and communities in the UK generate electricity using solar panels, wind turbines, biomass boilers, and micro‑hydro systems. These systems are installed close to the point of use, reducing transmission losses and easing pressure on the national grid.
• Community energy projects – Local groups and cooperatives are developing community‑owned energy schemes, often involving solar farms or wind turbines where nearby homes and businesses use the electricity. Profits are usually reinvested into the community or used to reduce local energy bills.
• Combined Heat and Power (CHP) and district heating – CHP systems and heat networks are being deployed in urban areas to deliver heat and electricity from a single source to multiple buildings, such as residential blocks, hospitals, or campuses, improving efficiency and reducing emissions.
• Smart grids and battery storage – Decentralised energy is supported by smart grid technology and battery storage. These systems allow users to store surplus renewable energy and feed it back into the grid when demand is high, helping to balance supply and demand locally.
• Microgrids and local energy markets – Some regions and business parks are developing microgrids. These small‑scale networks can operate independently or alongside the main grid and often include peer‑to‑peer energy trading.
• Government support and regulation – Schemes like the Smart Export Guarantee (SEG) and Contracts for Difference (CfD) support decentralised generation by guaranteeing payments for excess energy exported to the grid. Regulatory frameworks are also evolving to make decentralised energy more accessible and viable. For more information, check out our guide to how business energy is bought and sold.

Germany

Germany has made a strong transition towards a decentralised energy system, with renewables at the heart of it. Its main aims are to avoid greenhouse gasses, increase energy efficiency and become carbon neutral.

How are they doing it?

• They phased out nuclear energy in 2022
• They are phasing out coal production by 2038
• They are increasing energy efficiency to produce more output from less energy
• They aim to increase the share of renewables to 80% by 2050
• They are expanding networks and storage capabilities

In practice, large power plants connected to a main network are being supplemented and partly replaced by lots of smaller generation plants linked through smaller networks. More homeowners and businesses are generating their own power through renewable systems, and battery storage is increasing.

Germany is also exploring ways to increase low‑carbon energy generation by getting its citizens involved, including more decentralised systems in cities and as part of community projects.

Denmark

In 2012, the Danish parliament voted for the country to become 100% renewable by 2050. To achieve this, the government is reducing energy consumption and increasing decentralised energy generation and renewable energy sources.

As part of its largely decentralised system, the country has widespread use of wind turbines and community‑owned wind farms, where a local community funds the renewable energy system and uses its power on a local level. District heating systems are also popular – these heat local areas from central energy centres, distributing heat to local residences and businesses.

USA

Most of the electricity that Americans use still comes from centralised generation, but some states, such as New York and California, are at the forefront of adopting decentralisation, leaving the USA with a mix of both centralised and decentralised systems.

The National Renewable Energy Laboratory (NREL) is researching new ways to ensure a low‑carbon future. Its answer is “Autonomous Energy Grids (AEGs)”. These are self‑organised grids at the edge of the main grid that cooperate on a local and regional level. They’re interconnected to the larger grid, but they would be self‑reliant, meaning they could still operate if there was a failure with the main grid.

Are decentralised energy systems scalable for businesses of all sizes?

In principle, yes, decentralised energy systems can be scalable for businesses of all sizes. But in reality, this depends on factors such as the size and energy needs of a business, available space, and access to investment.

For example, a small gift shop is likely to use less energy than a local cafe, so a small system with rooftop solar panels might be enough. On the other hand, a restaurant may need more than a few solar panels to cope with the energy demands of fridges, ovens and gas or electric cooking equipment.

Larger industrial or multi‑site businesses may look at a mix of technologies, for example, solar plus battery storage and CHP – combined with demand‑side response, to get the best blend of cost savings and resilience.

If the UK continues to become more decentralised, we’ll see more ‘mini‑grids’ appearing, serving local areas. These are linked as part of a larger distribution network, which can be connected to the main grid. If we eventually link up all the mini‑grids with new technology, we can create a stronger, more reliable system for the whole country that may better withstand natural disasters, bad weather or even cyber‑attacks.

What are the benefits of using decentralised energy?

• Energy resilience - Using a decentralised energy system provides better resilience to grid failures and natural disasters that may affect a larger grid. Having a self-generated supply provides safety and allows businesses to have control over their energy reliability and usage.
• Lower energy costs - Since decentralised systems consist of individuals creating their own renewable electricity, energy costs are generally lower than energy bills from using the national grid. Although the initial investment for these systems can be hefty, over the long haul, it normally pays off. Read more about renewable energy systems for business here.
• Environmental sustainability- Because decentralised energy systems are mostly made up of renewable energy sources, they produce fewer greenhouse gases and emissions than traditional energy sources. This leads to a lower-carbon and more sustainable supply of energy. 
• Reduced transmission losses - Because decentralised systems are often situated close to where the power is used, there is less chance of energy transmission loss than if it's transported a long distance. This reduces the chance of disruption as well as improving energy efficiency.
• Budget visibility and price protection – Generating more of your own power can help shield your business from sharp changes in wholesale prices and standing charges.
• ESG and brand benefits – On‑site renewables and local energy projects can support your ESG reporting, help win tenders, and show customers and investors you are serious about sustainability.

Are there any challenges associated with decentralised energy?

As with most things, there are always drawbacks, so you need to consider the following:

• High initial costs - Like any new infrastructure, it’s expensive. Scaling decentralised energy across the whole country means the current system would need upgrades. SMEs also need to invest in their own renewable systems, stumping up an initial investment. Some firms choose power purchase agreements (PPAs) or “energy‑as‑a‑service” models to spread or avoid upfront costs.
• Complex to integrate – Decentralised systems are complicated to integrate at scale. Professional designers and infrastructure specialists are needed for these projects. When it comes to installing a renewable energy system, many businesses and homeowners lack the expertise and may need the help of an energy consultant.
• Mostly weather‑dependent – Popular renewable energy sources like solar and wind are weather‑dependent. If a whole decentralised system is based on unpredictable UK weather, it’s not always reliable. To combat this, we need to diversify our energy mix and make use of energy storage systems to store excess energy. This requires more investment.
• Regulatory hurdles – Because many worldwide energy systems have traditionally been centralised, most government policy and regulatory standards have been built around that model. New policies and standards around installation, grid connection, usage and compliance are needed, which can create delays and hurdles.
• Space and site constraints – Not every business has suitable roof space, land or planning permission for technologies like solar PV, wind or heat networks, which can limit options.

Can decentralised energy systems impact the grid in any way?

In short, yes – a decentralised system does impact the main grid.

Decentralised systems lower the demand for conventional fossil‑fuel energy from the grid. But as energy demand fluctuates, there may not always be enough renewable energy available. In this case, the grid will draw on fossil‑fuelled generation to avoid any disruption to power.

As more renewable sources are linked to our national grid system, this can cause challenges with forecasting and meeting the ‘load’ or demand. Not everyone who creates self‑generated electricity will make enough to cover their daily usage, especially for high‑consumption businesses. This puts pressure on our grid system to be more flexible and react quickly to changes in supply and demand.

As our UK decentralised system expands, smart grid technologies that use AI to be more energy‑efficient should be used to manage integration, flexibility and demand more effectively.

What type of businesses will benefit the most from decentralised energy?

Decentralised energy isn't right for every business. Before you take the plunge, consider whether youe business falls into any of the categories below:

• Businesses in local communities – Because the nature of decentralised systems is to serve up power locally, many communities will benefit. In some cases, they already are. In Islington, London, the Burnhill Heat and Power Network has been set up by Islington Borough Council to supply cheaper, greener heat to over 700 homes and two leisure centres.
• Small to medium businesses – Small businesses like cafes and retail stores with high energy bills might find they can lower costs with a decentralised system. Installing solar panels, biomass systems, or microturbines can improve energy efficiency and help with energy bills in the long run.
• Industrial and manufacturing industries – Businesses that use a lot of energy, like large manufacturers or warehouses, could benefit from generating their own electricity. CHP systems or hybrid installations can continually produce both heat and power and reduce reliance on the grid, cutting energy bills.
• Businesses off the grid – Remote businesses, like forest lodges, holiday parks or rural farms, can generate their own power to provide heat and electricity for guests and operations. This means owners can reduce energy bills and focus on maximising profits.
• Multi‑site and portfolio businesses – Retail chains, logistics operators and warehouse owners can use decentralised energy across several sites to standardise costs, support corporate net zero plans and improve resilience.

What are some examples of decentralised energy solutions suitable for businesses?

Here are some key examples of decentralised energy solutions that are well-suited to businesses:

• Solar panels (solar PV) – One of the most common options. Businesses can install solar panels on rooftops or adjacent land to generate electricity on‑site and reduce reliance on the grid.
• Wind turbines – Ideal for businesses in rural or windy areas. Small and medium‑sized wind turbines can supply power to a single site or building.
• Combined Heat and Power (CHP) – Generates electricity and captures waste heat for heating. CHP units are particularly effective for energy‑intensive businesses like hotels, hospitals, leisure centres and factories.
• Biomass boilers – Use organic materials like wood chips or pellets to generate heat and hot water. Biomass is suitable for businesses with high heating demands or access to waste biomass.
• Battery storage systems – Paired with renewable systems, batteries store excess electricity for later use to help businesses avoid peak energy rates and power outages.
• Ground or air source heat pumps – Extract heat from the ground or air to provide heating and hot water. Heat pumps can be a good option for businesses with consistent temperature control needs.
• Micro‑hydro power – If your business is near a river or stream, micro‑hydro systems can provide a constant, reliable electricity source by harnessing flowing water.
• Peer‑to‑peer energy trading systems – Some businesses in energy‑sharing networks can buy or sell electricity directly to/from nearby users, supporting local grids and renewable use.
• Energy monitoring and optimisation – Smart meters, sub‑metering and energy management software are not generators but are often part of a decentralised setup, helping you track, shift and reduce usage across sites.

How can my business get started with decentralised energy?

If you’re considering decentralised energy for your business, it usually makes sense to:

1. Understand your usage – Carry out an energy audit or review recent bills to see when and where you use most power and heat.
2. Check your site and constraints – Look at roof condition, available space, local planning rules and grid connection limits.
3. Explore technologies and finance – Compare options like solar, batteries, CHP or heat pumps and consider grants, tax reliefs or PPAs to spread costs.
4. Work with trusted experts – Use reputable installers or consultants who understand business energy and can model payback and carbon savings.
5. Stay connected to the grid – Most SMEs will still need a competitive grid tariff as a backup and to cover periods when on‑site generation isn’t enough.

Get your business set with Bionic

If you’re planning to go down the route of self-generated electricity, then It's worth researching all available grants on your local government site and reviewing environmental taxes for green energy production.

And if you’re not in a position to install a renewable energy system at the moment, at Bionic, our tech-enabled experts will help you to compare business energy quotes from our trusted panel of suppliers, including business electricity and business gas deals. And because business energy is more complex than domestic, we'll talk you through the results to ensure you get the right package for your business.

Interested in more content on business energy? Head to our energy guide pages for more information.

FAQs on decentralised energy and your business

Here’s an at-a-glance guide to some of the most frequently asked questions about decentralised energy and small businesses:

What is decentralised energy for businesses?

Decentralised energy for businesses means generating electricity or heat close to your site, rather than relying only on power from the national grid.

How can decentralised energy cut my business energy bills?

By generating some of your own power, you buy less from your supplier and can avoid some expensive peak‑time rates.

Is decentralised energy suitable for small businesses in cities?

Yes, many urban SMEs can use rooftop solar, heat pumps or heat networks, even if they don’t have large amounts of land.

What support is available for UK businesses investing in decentralised energy?

Depending on your location and technology, you may be able to access grants, capital allowances and schemes like the Smart Export Guarantee.

Do I still need a business energy contract if I generate my own power?

Yes, most businesses stay connected to the grid and need a contract to cover backup supply and times when on‑site generation is not enough.

Which sectors benefit most from decentralised energy in the UK?

Energy‑intensive sectors like manufacturing, warehousing, hospitality and agriculture tend to see the biggest savings and resilience benefits.

Can decentralised energy help my business reach net zero?

On‑site renewables and local low‑carbon heat can significantly reduce your operational emissions and support your net zero strategy.

How can Bionic help my business with decentralised energy plans?

Bionic can help you compare business energy deals, understand your options for renewables and make sure your contract supports any self‑generation you install.