Category: blog

Every winter, the same concerns return. Will energy prices rise again? Will the grid cope with increased demand? Will heating systems perform when buildings need them most? 

For many organisations, winter is no longer just a season. It has become a reminder of how dependent buildings remain on external energy markets. 

The conversation around energy has shifted. It’s no longer only about reducing carbon emissions or improving efficiency. Increasingly, it’s about resilience, predictability and control. 

Energy security is becoming a boardroom issue 

Organisations have spent decades optimising what happens inside their buildings. They’ve upgraded lighting, installed better controls, improved insulation and replaced ageing plant equipment. Those investments matter. 

Yet one of the biggest sources of energy risk often sits outside the building itself. 

Heating and cooling systems remain dependent on fuel markets, electricity price volatility or infrastructure that organisations do not control. As energy becomes a strategic business issue, we should be asking a different question. 

“How do we build infrastructure that remains dependable for decades?” 

The most resilient energy source isn’t exposed to the weather 

Above ground, conditions constantly change. Air temperatures fluctuate. Fuel prices rise and fall. Energy demand peaks during cold weather. Grid infrastructure experiences increasing pressure as more buildings electrify. 

Underground, conditions are remarkably stable. 

A well-designed geothermal system draws on this naturally consistent environment to provide reliable heating and cooling throughout the year. Rather than reacting to daily weather conditions, it exchanges energy with the stable temperatures below the surface. 

That stability is one of geothermal’s greatest advantages. 

Infrastructure should reduce risk 

When organisations invest in roads, water networks or communications infrastructure, the objective isn’t simply performance. It’s reliability.  

Energy infrastructure deserves the same approach. 

The goal should be more than lowering operating costs. It should be reducing long-term exposure to uncertainty.  

That means understanding the ground before design begins. It means accurately characterising geological conditions. It means designing borefields that will continue performing not only today, but twenty or thirty years from now. 

At GeoServ, this is where our work begins. 

Ground investigation, geological expertise and thermal testing provide the information needed to design geoenergy systems with confidence. Better data leads to better engineering. Better engineering leads to lower risk throughout the lifetime of the asset. 

Thinking beyond this winter 

Winter naturally focuses attention on energy. Buildings consume more heat. Costs become more visible. Performance matters. But the decisions that determine next winter’s resilience are made long before temperatures begin to fall. 

We need to start looking beyond seasonal energy bills or quick-fix investments. We need to start talking about infrastructure that provides stability in an increasingly uncertain energy landscape. 

Because true energy security doesn’t begin in the plant room. It starts underground. 

Energy markets have become increasingly volatile. Prices fluctuate rapidly, and supply constraints are becoming more common. 

For organisations with high energy demand, this creates ongoing risk. Budgeting becomes less reliable, and operational planning becomes more reactive. 

Over time, this uncertainty affects both financial performance and strategic decision-making. 

Why control over energy supply matters 

Some organisations are taking a different approach. Instead of reacting to market conditions, they are investing in energy systems that provide greater control over supply. 

This changes how energy is managed. Costs become more predictable, and performance can be measured more accurately. The organisation is less exposed to external volatility. 

Control does not mean full independence from the grid. It means reducing reliance on uncertain energy sources. 

Integrated energy systems create stability 

Energy certainty is achieved through system design. This includes combining stable energy sources such as geothermal with storage solutions and advanced optimisation technologies. 

Thermal storage, for example, allows excess energy to be stored and used when demand is higher. Intelligent control systems ensure that energy supply is aligned with real-time demand. 

This creates a more stable and efficient energy infrastructure. 

Long-term energy certainty drives competitive advantage 

Organisations with stable energy systems are better positioned to plan and grow. They can scale operations without the same level of risk exposure. 

Over time, this stability becomes a competitive advantage. It supports consistent performance, reduces operational risk, and improves financial predictability. 

Energy certainty is no longer a technical issue. It is a strategic advantage for organisations that choose to address it properly. 

One of the most interesting discussions at last Septembers’ Geothermal Heating & Cooling Days in Dublin had little to do with geology or technology. 

It went straight to the money — which is where most energy conversations eventually end up. 

Geothermal systems can require higher upfront investment than conventional heating and cooling technologies. For many organisations, this creates a barrier even where the long-term operational and energy benefits are attractive. 

But perhaps the problem is not simply the cost of the technology. It is how we think about the asset. 

Not all parts of the system are the same 

A ground source heat pump is mechanical equipment. Like other mechanical plant, it will eventually need to be replaced.The geothermal collector is different. 

Once installed, this underground infrastructure can remain in place for generations, serving successive heat pumps and supporting heating and cooling throughout the life of a building. This raises an important question: 

If geothermal is long-term energy infrastructure, should the building owner always have to fund it upfront? 

A different model is emerging – Heat-as-a-Service and Energy-as-a-Service models offer another approach. 

Rather than the customer funding the full infrastructure cost, long-term capital can finance and own the energy asset. The customer then pays for the heating and cooling service it provides over an agreed period. 

This changes the conversation from upfront CAPEX towards long-term cost, performance and risk. 

It can also better align the financing period with the life of the underlying infrastructure. 

From individual projects to infrastructure portfolios 

Another important theme from Dublin was scale. A single geothermal project may be relatively small from an infrastructure investor’s perspective. But multiple projects, each with long-term customers and predictable energy demand, can potentially be aggregated into a larger portfolio. 

That creates an opportunity to think differently about how geothermal is financed, owned and delivered. 

The technology to provide efficient, low-carbon heating and cooling already exists. Increasingly, the challenge is creating commercial models that allow more organisations to access it. Perhaps the next major innovation in geothermal will therefore not happen underground. 

It will happen in how we finance what we put there. If we want geothermal to scale as infrastructure, we need to start financing it like infrastructure. 

Annual energy consumption tells you how much energy a building uses. It does not tell you what energy infrastructure that building needs.

That distinction matters.

Two buildings can consume the same amount of energy over a year while placing very different demands on their heating, cooling and electrical infrastructure.

The difference is not simply how much energy they use. It is when they need it, how much they need at any one time and what is creating that demand.

The peak matters, but the reason behind it matters more

Consider two buildings with the same annual heating demand.

One has relatively steady demand throughout the day. The other operates at low demand for long periods before experiencing a significant peak on cold winter mornings.

On an annual energy report, they may look almost identical.
From an infrastructure perspective, they are not.

That peak can influence the size of heat pumps, electrical connections, transformers, thermal storage and backup plant. Designing around it without understanding what causes it can lead to unnecessary infrastructure and higher capital costs.

So identifying the peak is only the beginning.
What caused it?

Was it morning warm-up? Occupancy? Ventilation? Domestic hot water? An industrial process? Or several loads occurring simultaneously?

Once the cause is understood, the engineering options become clearer.

The peak may be reduced. It may be shifted. Thermal energy may be stored around it. Waste heat may be recovered elsewhere in the system. Despite popular belief – the answer is not always more capacity.

Design the infrastructure around the building

It becomes increasingly important to design the infrastructure around the building. Poor understanding of peak demand can translate directly into larger electrical connections, oversized plant and unnecessary infrastructure.

Geoenergy creates another set of possibilities.

The ground provides a stable thermal resource for both heating and cooling. Where buildings have simultaneous or complementary loads, energy can potentially be recovered and moved through the system rather than continually generated and rejected. Adding free cooling to this, even further opportunities to reduce electrical demand are created.

But geoenergy should not be the starting point.
The building should.

Infrastructure that lasts for decades

Good infrastructure design starts with understanding how the building actually operates. That means its load profile, operating hours, seasonal variation, heating and cooling peaks and the activities behind those peaks.

Annual consumption tells us how much. The load profile tells us when. Understanding the building tells us why.

Only then should we decide what infrastructure it needs.
Measure first. Design second. Build for decades.

Decarbonisation targets are now standard across most large organisations. Net-zero commitments are widely adopted, and pressure to reduce carbon emissions continues to grow. 

However, many strategies fail to deliver meaningful results. The issue is not ambition, but execution. 

Too often, organisations focus on individual technologies rather than the full energy system. Renewable energy solutions are added without addressing how energy is actually used. 

Disconnected energy solutions create inefficiencies 

When technologies are implemented without system design, inefficiencies remain. Energy demand is still misaligned with supply. Waste is not addressed at its source. 

In some cases, new technologies increase operational complexity without improving overall performance. Energy systems become harder to manage, and expected savings do not materialise. 

This leads to stalled progress and growing uncertainty around return on investment. 

Effective decarbonisation starts with demand 

A successful decarbonisation strategy begins with a clear understanding of energy demand. This includes real-time usage patterns, seasonal variation, and peak load requirements. 

With this insight, organisations can design integrated energy systems that reduce carbon emissions while maintaining operational stability. Solutions such as geothermal energy, heat networks, and thermal storage allow for consistent, low-carbon energy supply. 

Intelligent control systems then optimise performance, ensuring energy is used efficiently across the operation. 

Build decarbonisation into the system 

Decarbonisation is not achieved through isolated upgrades. It requires a system-level approach where all components work together. 

Organisations that focus on integrated energy system design achieve more reliable outcomes. They reduce emissions while also improving efficiency and long-term cost control. 

Decarbonisation only delivers value when it is built into the structure of the energy system itself. 

We’ve become used to financing heating systems. But Geoenergy isn’t just another heating system. It’s infrastructure. 

That distinction changes the financial conversation. 

Most projects are still assessed against the initial capital budget. The cheapest option today often wins, even if it creates higher operating costs, earlier replacement and greater energy risk over the next 30 years. 

Geoenergy doesn’t fit neatly into that model. 

The wrong financial model  

Its value isn’t delivered during construction. It’s realised over decades through lower operating costs, stable performance, improved resilience and infrastructure that continues supporting the building long after plant has been replaced. 

The challenge isn’t always the cost. It’s the investment horizon. 

When underground energy infrastructure is expected to compete with equipment designed for a 15 to 20-year life, we’re comparing two fundamentally different assets. 

Financing infrastructure, not equipment 

A better question is: “Who benefits from decades of lower operating costs, reduced energy risk and long-term resilience, and how should that infrastructure be financed? “

Once the conversation shifts, so do the funding options. The building owner may choose to invest directly. Or a specialist infrastructure investor, utility or energy provider could finance, own and operate the underground asset while the customer purchases heating and cooling through a long-term service agreement. 

The capital doesn’t disappear. It simply moves to an organisation whose investment horizon matches the life of the asset. 

The next step 

That’s where concepts such as Geoenergy as a Service become interesting. But finance only follows confidence. Investors need reliable demand forecasts, robust site investigation, well-designed projects and repeatable delivery models. 

Ireland doesn’t lack opportunity. 
It needs a pipeline of investable geoenergy projects. 

That’s one of the key discussions at the EGEC and Geothermal Association of Ireland workshop in Dublin this September. Because if geoenergy is infrastructure, it deserves to be financed like infrastructure. 

For decades, energy decisions sat largely within facilities and engineering teams. The goal was simple. Keep buildings comfortable, operations running and costs under control.

That has changed.

Today’s energy decisions influence capital investment, grid capacity, carbon targets, operational resilience and long-term financial exposure. They now belong in the boardroom. These decisions are usually well considered. They are supported by data, consultants and extensive internal review. The hidden risk is rarely poor judgement.

It is whether leaders ever saw the full range of long-term options before making the decision.

Choosing the known

In complex organisations, decisions naturally favour proven technologies and familiar approaches. Especially where operations cannot tolerate failure. The board may rigorously evaluate every proposal. But if earlier assumptions have already narrowed the available options, the decision is constrained before it reaches the boardroom.

Existing systems are extended. Additional layers are added. Performance improves incrementally. Each decision is reasonable on its own. Together, however, they can lock organisations into decades of exposure to volatile energy markets, grid constraints and rising operational risk.

When risk accumulates

Energy infrastructure is rarely designed once. It evolves through capital cycles, operational demands and changing regulations. What begins as a temporary solution often becomes permanent. Over time, organisations inherit instability rather than deliberately choosing it.

For businesses where uptime is critical, energy is not simply a utility cost. It is core infrastructure.

Stabilising rather than optimising

Energy is often treated as something to optimise. Increasingly, it should be viewed as something to stabilise.

Geothermal changes the conversation.

Rather than focusing on short-term savings, it asks what energy infrastructure must reliably deliver over the next fifty years. Stable underground temperatures provide predictable performance with minimal exposure to fuel price volatility and grid pressure. For hospitals, pharmaceutical manufacturing, data centres and other mission-critical facilities, that stability directly supports operational resilience.

Continuity as strategy

Choosing geothermal is not primarily about innovation. It is about reducing uncertainty and building energy infrastructure that quietly performs for decades.

The strongest long-term decisions often attract the least attention because they remove variables instead of introducing them. The hidden risk in energy decision-making is not a lack of careful thinking. It is making a series of sensible decisions without ever seeing the full range of long-term possibilities.

The real question for leaders is not whether today’s decision is well reasoned. It is whether the right options reached the table in the first place.

Ground energy infrastructure installed today can outlast several generations of the equipment above it. Boilers get replaced. Chillers get replaced. Heat pumps get replaced. What sits in the ground can keep serving a building 30, 50, even 100 years later. That timescale is worth holding onto, because it changes how a decision like this should be made.

No single technology has every answer

The energy transition will not be delivered by one technology. Every site is different. Every building has different demands. Every project carries different constraints and opportunities. The future belongs to a portfolio of low-carbon technologies working together, not one dominant solution.

If that’s true, a question follows naturally.

Why isn’t everything on the table?

If no single technology answers every case, why aren’t all credible low-carbon options routinely evaluated at the masterplanning stage? Perhaps project programmes leave little room for strategic energy planning. Perhaps design teams default to what they already know. Perhaps the process itself has evolved in a way that resists being challenged.

The reason matters less than the principle it points to. Every development deserves an objective, evidence-based assessment of its low-carbon options before the key design decisions are locked in.

The real question

Geothermal will not be right for every project. Nobody serious about the technology claims otherwise. But it deserves to be evaluated on the same terms as everything else, at the same stage as everything else, before assumptions harden into a design.

The question is no longer whether geothermal should be considered. It’s why it wouldn’t be, alongside every other low-carbon technology, before the architect draws the first line.

Borehole drilling is often seen as a barrier to geothermal energy. Concerns usually centre on space, access, and disruption. This is especially true in urban or constrained sites.  

But in practice, these concerns are often overstated. 

Geothermal boreholes take up very little permanent space. Most of the work happens below ground. With the right planning, drilling can be integrated into both new-build and retrofit programmes with minimal impact. 

What borehole drilling actually involves 

Geothermal boreholes are typically around 150 millimetres in diameter and drilled to depths of 150 to 250 metres. Pipework is installed and connected underground to form an open- or closed-loop system. Once drilling is complete, the surface is returned to its original condition, with no visible infrastructure left behind. 

The drilling phase is temporary.  

A typical drilling rig needs about a 10 by 10 metre working area while drilling is underway. This allows room for the rig itself, the crew, and the pipework. Up to 5 metres of clear height is also needed, so trees, overhead cables, or nearby structures should be checked early. But even in the most constrained sites, solutions can often be found.  

Working on constrained and retrofit sites 

Geothermal boreholes do not necessarily need large open land. They can be installed beneath roads, car parks, courtyards, and landscaped areas. The same approach works for retrofit. Boreholes can be positioned under existing external areas without disrupting building operations.  

When planned properly, drilling runs alongside other site activities. If if coordinated correctly, it does not need to delay or interfere with the day-to-day operations. 

Why this matters 

The main barrier to geothermal is rarely space. If anything, it’s a late consideration. When boreholes are planned early, layouts can be optimised, access simplified, and cost controlled. 

The limitation is often a matter of perception, not feasibility. 

Energy is often framed as strategy. Something to optimise, revisit, or refine. 

In practice, energy behaves like infrastructure. It underpins continuity, safety, and financial predictability. When it works, it stays out of view. When it fails, the impact is immediate. 

The cost of constant adjustment 

Many energy approaches rely on ongoing intervention. Contracts are reviewed. Systems are tuned. Exposure is monitored. This assumes constant attention. It assumes teams have the capacity to respond as conditions shift. In complex operations, that assumption breaks down. 

Over time, energy becomes a source of background strain. Not due to poor decisions, but because stability was never designed in. Too many variables remain active. 

Thinking in infrastructure terms 

Infrastructure-led decisions ask a different question. Not how efficient the system is today, but how predictably will it behave over decades. Predictability matters when operations cannot pause. It limits exposure to weather, markets, and policy shifts. 

Geothermal operates on stable physical conditions. Subsurface temperatures do not fluctuate. Output remains consistent. Performance is not tied to daily weather or fuel markets.  

The system does not rely on continuous optimisation to stay reliable. That reduces operational effort and long-term risk. 

Stability as a baseline 

Organisations that manage risk well, remove it early. They design systems that behave consistently without constant oversight. When energy is treated as infrastructure, stability is no longer a goal. It is the starting point.