Module 12 — Designing the Energy System of the Future
Lesson 5 of 9
Digital public infrastructure
Learning objectives
By the end of this lesson you should be able to:
- Understand what is meant by digital public infrastructure.
- Explain why digital technologies are becoming essential to modern electricity systems.
- Recognise the different components of digital infrastructure.
- Appreciate the importance of interoperability, cybersecurity and data governance.
- Understand why digital infrastructure should be considered alongside physical infrastructure when designing future electricity systems.
Introduction
Electricity systems have traditionally been viewed as physical infrastructure.
Transmission lines transport electricity.
Substations transform voltage.
Transformers distribute power to homes and businesses.
Today, however, electricity systems increasingly depend upon digital technologies.
Sensors monitor network conditions.
Communications systems connect millions of devices.
Software coordinates markets and network operation.
Automated control systems respond continuously to changing conditions.
These digital capabilities are becoming as important as the physical infrastructure they support.
What is digital public infrastructure?
Digital public infrastructure refers to the shared digital systems that enable essential services to operate efficiently, securely and reliably.
In electricity systems, this may include:
- communications networks,
- digital identity systems,
- operational data platforms,
- measurement systems,
- interoperability standards,
- cybersecurity frameworks,
- control platforms.
Together, these technologies enable information to move through the electricity system in much the same way that electricity moves through physical networks.
From physical to cyber-physical systems
Modern electricity systems are increasingly cyber-physical systems.
The physical network transports electricity.
The digital network transports information.
Operational decisions increasingly depend on both.
For example:
Sensors measure network conditions.
Communications systems transmit information.
Software analyses system state.
Controllers adjust equipment in response.
The physical and digital systems therefore operate together as one integrated infrastructure.
Why digital infrastructure matters
As electricity systems become more distributed, coordination becomes more complex.
Millions of devices may participate in electricity markets and network services.
Digital infrastructure allows these devices to exchange information efficiently.
This supports:
- improved visibility,
- faster decision-making,
- better coordination,
- more efficient operation,
- enhanced reliability.
Without appropriate digital infrastructure, many modern electricity services would be difficult to deliver at scale.
Interoperability
Future electricity systems will include equipment developed by many different manufacturers and organisations.
For these technologies to work together, they must communicate using compatible standards.
This ability is known as interoperability.
Interoperability allows devices and systems to exchange information reliably, regardless of who developed them.
Open standards can help reduce barriers to innovation while supporting competition and long-term flexibility.
Data
Data has become an increasingly important resource within electricity systems.
Examples include:
- electricity demand,
- network utilisation,
- equipment condition,
- weather information,
- market activity,
- asset performance.
High-quality data supports:
- planning,
- forecasting,
- operational decision-making,
- investment,
- maintenance.
However, effective use of data also requires appropriate governance, privacy protections and clear responsibilities.
Cybersecurity
As electricity systems become more connected, protecting digital infrastructure becomes increasingly important.
Cybersecurity aims to protect systems from:
- unauthorised access,
- malicious attacks,
- data manipulation,
- disruption of essential services.
Strong cybersecurity supports the safe and reliable operation of electricity systems and helps maintain public confidence in digital technologies.
Digital infrastructure as a public good
Some elements of digital infrastructure may provide benefits across the entire electricity sector.
Examples include:
- shared technical standards,
- communications protocols,
- common data formats,
- trusted digital identities,
- secure interoperability frameworks.
Providing these shared foundations can allow many organisations to innovate while reducing duplication and improving compatibility.
Supporting innovation
Digital public infrastructure creates a platform upon which new services can be developed.
Rather than each organisation building entirely separate systems, common digital foundations allow innovators to focus on developing new products and services.
This can encourage:
- competition,
- interoperability,
- innovation,
- lower costs,
- faster deployment of new technologies.
Looking ahead
Future electricity systems are likely to become increasingly digital.
Artificial intelligence, automation and advanced communications may support more responsive and adaptive operation.
At the same time, maintaining trust, cybersecurity and effective governance will become increasingly important.
Designing digital infrastructure therefore involves not only technology but also institutions, standards and public policy.
A balanced perspective
Digital infrastructure should not be viewed as replacing physical infrastructure.
Electricity will always require generators, networks and substations.
Instead, digital technologies increasingly complement physical infrastructure by improving visibility, coordination and operational efficiency.
The future electricity system is therefore best understood as an integrated cyber-physical system in which physical and digital infrastructure work together.
A key insight
Digital public infrastructure provides the information, communications and coordination capabilities that increasingly underpin modern electricity systems.
Alongside physical infrastructure, it enables the safe, reliable and efficient operation of increasingly distributed and digitally connected electricity networks.
Key takeaways
- Digital public infrastructure supports the operation of modern electricity systems through communications, data and software.
- Future electricity systems depend upon both physical and digital infrastructure.
- Interoperability enables equipment from different organisations to work together effectively.
- Data plays an increasingly important role in planning, operation and investment.
- Cybersecurity is essential for protecting connected electricity systems.
- Shared digital foundations can support innovation while improving coordination across the electricity sector.
Looking ahead
This lesson examined the role of digital public infrastructure in future electricity systems.
The next lesson explores how these digital capabilities enable consumer participation and automation, allowing households, businesses and devices to play a more active role in the operation of the electricity system.