Success story

Horizon Power expands access to electricity network

Horizon Power was searching for a virtualization platform to support the ENMACs system that provided real-time management, monitoring, and control of a public electrical distribution network. Additional requirements included a flexible platform that was easy to use and centralised storage for personnel in office sites and out in the field. Red Hat® Virtualization let the utility powerhouse provide its office and field teams with easy access to critical networks.

Customer Since


Karratha, Western Australia

Energy Industry


Extend IT management of electricity network to an expanding remote workforce.



  • Servers: HP C3000 blade enclosures, Proliant BL460 G7 servers, HP Proliant DL380 G5 servers, HP Proliant DL380 G6 servers
  • Networking: Cisco switches, HP ProCurve switches
  • Storage: QNAP TS-859U-RP+ NAS, HP P4500 left hand ISCSI SAN

Right from the beginning of the beta trial of Red Hat Virtualization, we were able to see significant improvements. Not only is the user experience noticeably faster, but Red Hat Virtualization for Desktops and the SPICE network protocol provided improved virtual desktop screen resolution.

Bob Good, SCADA Coordinator, Horizon Power

Virtualized network must support critical tasks during storms

Horizon Power is Western Australia's regional and remote electricity provider. A state government-owned, commercially focused corporation, Horizon Power provides quality, safe, and reliable power to more than 100,000 residents and 9,000 businesses including major industries. It is an energy utility unique in that it handles multiple functions: the generation, procurement, distribution, and retailing of electricity.

Horizon Power is proud of its passion and ability to deliver safe and reliable supplies in the most challenging environments. Its energy systems are exposed to everything from intense heat and cyclone-like conditions in the north to ravaging storms in the south. Horizon Power has been successfully operating Red Hat Enterprise Linux-based virtualization in its production environment since 2009.

Company restructuring requires more access

A company restructure produced an increase in Horizon's remote workforce and the company needed a virtualization solution. The solution would have to provide greater flexibility, ease of use, and enable shared storage across all of its locations.

"Additional virtualization requirements emerged as we were asked to provide access to the Electrical Network Management and Control (ENMAC) system, which is a mission-critical system used to manage the electricity transmission from power stations to end users," said Colin Coe, systems administrator, Horizon Power.

Network must remain secure

"This was a real challenge because ENMAC is in an isolated, secure network and server configuration and is not part of our wider corporate IT network. We have always kept a tight control on the network and only a select number of users have access to it. In the end, we knew we had a challenge on our hands," said Coe. "This translated into demanding requirements since ENMAC needed to be virtualised very securely."

The critical nature of the ENMAC system meant that the Horizon Power team had to be completely confident that they would remain in control of the network once the upgrade took place. If the technology upgrade was successful, it would ultimately result in better service to field staff and Horizon's end users.

Horizon Power finds lower cost, more functions

Horizon Power conducted a thorough comparison of virtualization technology between Red Hat and VMware. The electricity provider made the decision to implement Red Hat Virtualization 2.2, based on its superior results. Not only did the technology prove to be significantly less expensive, it was also simpler to set up and manage. Red Hat used open standards with no vendor lock-in.

Geography challenge solved

"Installing Red Hat Enterprise Virtualization solved an immediate need to provide access to network software that, due to geography, couldn't have been granted otherwise," said Coe. "Our top priorities were enabling functionality and doing it quickly. Red Hat Enterprise Virtualization addressed these two points effectively."

Red Hat Virtualization 2.2 was introduced into a production environment based on a mix of HP DL380G5 and DL380G6 servers, using a QNAP 859RU as the backend iSCSI storage system.

Taking the next step with Red Hat

Following its participation in the Red Hat Virtualization 3.0 beta program, Horizon Power decided to further expand its Red Hat Virtualization footprint by transitioning its production and development environments from Red Hat Virtualization 2.2 to Red Hat Virtualization 3.0.

Horizon Powers Red Hat Virtualization 3.0 environment is built using HP C3000 blade enclosures with nine Proliant BL460 G7 servers. The Red Hat Virtualization cluster at Horizon Power is being used to support both virtual servers and as well as virtual desktops, which together make up the client-server ENMAC deployment. With multiple engineering workstations requiring access to critical server-based systems for ENMAC, Citect, WinSOS, and other SCADA software, the entire virtualised server infrastructure comprises a mixture of Windows servers and Red Hat Enterprise Linux servers.

More workloads virtualized

The virtual desktop infrastructure includes the use of virtualized Microsoft Windows XP and Windows 7 desktops, delivered to end users via the SPICE remote rendering protocol. Half of the Active Directory servers are virtualized now, along with the ENMAC servers, anti-virus servers, WSUS servers, web servers, and DNS server. Additional workloads that have been virtualized include internally developed web services, ticketing system (Trouble Ticket Express), monitoring systems (Xymon), and MySQL databases.

Horizon Power workers get faster, more efficient

Within six months of using Red Hat Virtualization 2.2, Horizon Power provided off-site staff access to the ENMAC network. The next move to Red Hat Virtualization 3.0 paid off even more.

"Right from the beginning of the beta trial of Red Hat Enterprise Virtualization 3.0, we were able to see significant improvements," said Bob Good, SCADA Coordinator, Horizon Power. "Not only is the user experience noticeably faster, but Red Hat Enterprise Virtualization for Desktops and the SPICE network protocol provided improved virtual desktop screen resolution. Plus, the fact that it runs on the same Kernel-based Virtual Machine (KVM) hypervisor as Red Hat Enterprise Linux 6 means we'll have several years' worth of kernel improvements contributing to new upgrades and updates to Red Hat Enterprise Virtualization 3.0."

Electricity provider increases safety, reliability

Because the company is a power utility, safety and reliability are paramount. There's no room for business error. "The technology we use is absolutely critical because the entire organization—as well as the wider population of power consumers—relies on our ENMAC system to understand the power network and accurately report any safety issues," said Coe.

"We believe there's one sure way to judge the quality of a platform—Linux or any other—and that's by how much third-party protection is needed. Red Hat doesn't require any anti-virus protection from third parties, just some patching now and then, which it releases itself. That's just one reason why we have trusted Red Hat as an integral part of our infrastructure for a number [of] years," said Coe.

Security comes with anywhere access

Horizon Power's virtual desktops are deployed to end users via the Red Hat Virtualization User Portal. All virtual desktops are located in the secure SCADA network and users access their own individualised virtual desktop by using the integrated connection broker. Because its engineers do a lot of site work and may be required to work on systems at a different remote site, it's critical that the virtual desktops are accessible anywhere on the Horizon Power network.

Red Hat earns trust

A Red Hat Certified Engineer (RHCE®) since 2005, Coe has had a fair amount of experience with Red Hat. However, he admits that most people still don't know how often their lives intersect with Linux technology. "It's quite ironic. Linux touches us all in so many ways, every day, yet most of us have no idea."

"From the phones we rely on to the traffic lights we stop for–-most things we use regularly have some degree of Linux as their make-up, and it's Linux that ensures they work as reliably as they do," said Coe. "I will continue to trust Linux and rely on Red Hat for my technology strategy for years to come."

Learn More