Overground vs Underground Cables

In England and Wales, distribution network operators (DNOs) manage the poles, pylons, and cables in local areas. These DNOs are responsible for ensuring that electricity is effectively distributed from the high-voltage transmission system to homes and businesses. There are currently around 500,000 miles of distribution lines in England and Wales. Recently, calls for more underground cable networks have increased, especially with the construction of new onshore windfarms and solar farms requiring new distribution infrastructure to connect to the national grid.

The government has stated that overhead lines will remain the standard for electricity distribution in the foreseeable future. Only in nationally designated landscapes like areas of outstanding natural beauty (AONB) and national parks, where overhead lines have a strong visual impact, are underground lines to be considered during planning.

Why Don’t We Install More Underground Cables?

While underground lines have a minimal visual impact on the landscape after installation, the engineering works required to bury the cables are extensive and can cause great damage to the landscape. The National Grid lists a number of issues that make underground lines more complicated and expensive than overground lines including the cost of construction, cost of the cable itself due to the different insulation required, and the risk of disturbing sensitive habitats or archaeological sites. Other issues can arise with maintenance and repairs. Although monitoring equipment is buried with the cables, when a fault arises, an underground cable is out of service for about 25 times as long as an overground cable.

Is Overhead the Solution?

The lower engineering costs for the installation of overhead distribution lines and reduced downtime during repairs are strong arguments for this technology. Although overhead lines are more at risk of damage during storms or wildfires, the damage is easily detected and quickly repaired. Overhead lines are more easily rerouted or modified to serve customers, keeping disruption of the power supply to homes and businesses to a minimum.

The visual impact of power utility poles can be problematic in some areas, but there are ways to make them blend better into the landscape. One effective option is using wood, the most traditional material for utility poles. Wood is a renewable resource and easy to install. Modern protection technologies, such as the Polesaver sleeve, help maintain the stability and security of wood poles by preventing rot at the ground line. Additionally, Polesaver sleeves offer protection against termites and wildfires, ensuring the durability of wood poles throughout their lifespan.

Looking to the Future

The government is planning to modernise and strengthen the national grid as part of its work towards net-zero, including faster construction of new distribution infrastructure and cutting the time it takes to connect viable projects to the grid. At the moment, overhead cabling seems to be the best way to support these plans. The balance between overhead and underground cables will continue to be a topic of discussion as we strive for an efficient and sustainable electricity distribution network.

Get In Touch

Polesaver is the leading manufacturer of products designed to increase the life of wooden utility poles for 20 years. Get in touch for further information, or to arrange a TEAMS call to discuss our products.

Data Sources

• https://en.wikipedia.org/wiki/Undergrounding
• https://www.newcivilengineer.com/latest/electricity-transmission-lines-to-only-be-built-undergrounded-in-exceptional-circumstances-01-03-2024/
• https://lordslibrary.parliament.uk/undergrounding-electrical-transmission-cables/
• https://www.nationalgrid.com/sites/default/files/documents/39111-Undergrounding_high_voltage_electricity_transmission_lines_The_technical_issues_INT.pdf
• https://www.power-grid.com/td/underground-vs-overhead-power-line-installation-cost-comparison/#gref
• https://www.aurecongroup.com/insights/overhead-vs-underground-transmission-infrastructure

The Power of People: Community Energy Projects and their Impact on Sustainability

As global energy demands rise and the urgency for sustainable solutions intensifies, community energy projects are emerging as a promising avenue for transforming how we generate, distribute, and consume power. These initiatives, which empower local communities to generate and manage their own energy, are gaining traction worldwide. Could global governments better harness the power of the people through community energy projects? The answer might lie in the experiences of countries already embracing this model.

The Global Rise of Community Energy Projects

Recognising these benefits and challenges, some global governments are starting to embrace community energy projects as a way to transition to sustainable energy systems while empowering local communities.

In the United States, the concept of community energy is not new, several states already rely heavily on cooperatives (co-ops) that enable communities to support and invest in their local power networks. These co-ops, which are owned and operated by community members, provide a model of localised energy independence that could be replicated globally.

In January 2024, the UK witnessed a landmark event with the largest-ever transfer of solar farms into community ownership. Eight solar farms, with a combined capacity of over 70 MW, were transferred to local communities, marking a significant step toward energy democratisation in the UK.

Across Europe, various countries are experimenting with community energy projects. Germany, for example, has a strong tradition of citizen-led energy cooperatives. These projects have significantly contributed to the country’s renewable energy capacity, showcasing the potential for community-driven energy transitions.

Similarly, various countries are beginning to recognise the potential of community energy projects. These initiatives not only decentralise energy production but also foster local engagement, economic development, and environmental awareness.

The Benefits of Community Energy Projects 

Community energy projects can stimulate local economies by creating jobs and keeping energy revenues within the community. Local ownership means that profits from energy production are reinvested in the area, supporting other local businesses and services. By generating their own power, communities can reduce their reliance on external energy suppliers. This independence enhances energy security and can protect communities from fluctuating energy prices and supply disruptions.

Community energy projects often focus on renewable energy sources like solar, wind, and biomass, these projects reduce greenhouse gas emissions and contribute to the global fight against climate change. Localised renewable energy production also decreases the environmental impact associated with energy transmission over long distances. Involving community members in energy projects fosters a sense of ownership and responsibility and this engagement can lead to greater awareness of energy consumption patterns and encourage more sustainable behaviours. Communities that are directly involved in energy decisions are more likely to support and advocate for renewable energy initiatives.

Over time, community energy projects can lead to significant cost savings for residents, by cutting out middlemen and reducing transmission costs, locally generated energy can be cheaper than traditional energy sources. Additionally, investments in renewable energy can pay off in the long run through reduced energy bills and lower maintenance costs.

Overcoming Challenges in Community Energy Projects

Despite their numerous advantages, the upfront costs of setting up renewable energy infrastructure can be substantial. Securing funding for these projects can be a significant hurdle, especially for smaller communities with limited financial resources. Implementing and maintaining renewable energy systems also requires technical expertise and communities must either possess this expertise or have access to external support, which can be costly and logistically challenging.

Navigating the regulatory landscape for energy production and distribution can be complex. Communities may face bureaucratic obstacles that can delay project implementation or increase costs. While many people support the idea of renewable energy, specific projects can face opposition from residents due to concerns about aesthetics, noise, or potential environmental impacts, which can complicate project development.

Renewable energy sources like solar and wind are intermittent, meaning their energy production can fluctuate. This intermittency can pose challenges for ensuring a stable and reliable energy supply, necessitating backup systems or storage solutions that add to the complexity and cost.

The Future of Community Energy Projects

To fully realise the potential of community energy projects, several strategic steps are essential. Governments can facilitate these initiatives by providing supportive policy frameworks, streamlining regulatory processes, offering financial incentives, and delivering technical support. Innovative funding mechanisms, such as grants, low-interest loans, and crowdfunding, can help communities overcome initial investment challenges, meanwhile, access to technical expertise and resources is crucial for navigating project complexities. Raising awareness about the benefits and feasibility can build local support and involvement, whilst fostering collaboration between communities, governments, and partners can enhance the success and scalability of initiatives.

Conclusion

Community energy projects have the potential to revolutionise the way we produce and consume energy by putting power literally into the hands of the people. These initiatives can drive local economic development, enhance energy independence, and contribute to environmental sustainability and, while challenges exist, the growing momentum behind community energy projects around the world suggests a bright future where communities are at the forefront of the energy transition.

Get in Touch

Polesaver is a leading manufacturer of wood pole life extension products and works with utilities globally. Get in touch to see how Polesaver can benefit your community energy projects. 

Infrastructure Project Planning, Including Utility Pole Installation

Part of the planning for most infrastructure projects, including the installation of utility poles, is an evaluation of the impact any new structures will have on the existing landscape and its environment. This ranges from the upheaval caused by the construction in the short term to the effect the finished product may have on the environment well beyond its active life.

Environmentally Conscious Infrastructure Planning

In the UK, Environmental Impact Assessments (EIA) and proposed mitigation measures can be the deciding factor whether or not planning permission will be granted. In the US, the least environmentally damaging practicable alternative (LEDPA) analysis considers factors such as terrain characteristics, land use patterns, ecological sensitivity, visual impacts and stakeholder preferences before a project can go ahead.

Utility poles are an integral part of critical infrastructure in every country across the globe. Millions of poles enable power distribution and communication over long distances, often across areas that have special environmental protection like National Parks, Areas of Outstanding Natural Beauty, World Heritage Sites and scheduled monuments. They will have an effect on the environment they are being erected in but any negative impact can be minimised with careful planning and material choice.

Wood Utility Poles Environmental Impact

Wood, concrete, steel or fibre reinforced composite materials are the current material choices available for utility poles. Each option has its own advantages but, when it comes to minimising the environmental impact, wood has to be the preferred choice.

• Although steel, concrete and composite materials can be longer lasting, wood has a much lower carbon footprint.

• Steel and concrete production require large quantities of fossil fuels, whereas most lumber companies use biomass by-products from the milling process making the North American lumber industry, for example, 50 to 60 percent energy self-sufficient.

• Research by the Swedish Environmental Research Institute showed composite poles have a lower environmental impact than steel and concrete but still higher than wood.

Addressing Environmental Concerns: Modern Solutions for Wood Preservation

Arguments against wood often highlight concerns about the chemicals used for preservation. In response to these concerns, stricter environmental legislation is being implemented globally, including the upcoming ban on Creosote in Europe. The Polesaver sleeve offers a solution which seals the critical ground-line surface of the pole, which not only slows down deterioration by locking in preservatives, it also reduces leaching. This makes Polesaver-protected poles an environmentally friendly choice, particularly in environmentally vulnerable areas.

After 200 years, most utility poles worldwide are still made from wood. Today, there are between 160 and 180 million wood poles in the U.S. and 5 million of the estimated 7 million utility poles in Australia are wood poles. They blend into the landscape much better than the industrial looking alternatives. Made from a renewable resource, they are durable, recyclable and have a lower carbon footprint than any of the alternative materials.

The lifespan of wood poles, when pressure treated with a preservative to protect against rot, fungi and insects, is between 25 and 50 years, compared to 60 years for steel and 50 years for concrete. Combining traditional treatment of the wood with preservatives with the application of a protective sleeve like Polesaver can extend the lifespan of the wooden pole by 20+ years from the start compared to poles just treated with chemicals.

Polesaver is a leading manufacturer of wood pole life extension products and works with utilities globally. Get in touch to see how Polesaver helps meet your environmental targets.

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Data Sources:

https://www.gov.uk/guidance/environmental-impact-assessment

https://en.wikipedia.org/wiki/Environmental_impact_assessment

https://www.pik-potsdam.de/de/aktuelles/nachrichten/gebaeude-koennen-zu-einer-globalen-co2-senke-werden-mit-dem-baustoff-holz-statt-zement-und-stahl

https://acmanet.org/resources/comparison-of-the-environmental-impacts-from-utility-poles-of-different-materials-a-life-cycle-assessment/

As global energy demands surge and power grids become increasingly complex, incorporating predictive analytics and machine learning is transforming utility management and grid optimisation. 

By harnessing vast datasets from grid sensors, historical records, and weather forecasts, these cutting-edge technologies provide unparalleled capabilities to predict grid conditions, foresee equipment failures, and significantly boost overall grid performance.

The Power of Machine Learning

Predictive analytics uses statistical methods plus algorithms to study current and past data to make future predictions. When applied to the energy sector, these tools can provide insights into grid performance, identify potential issues before they escalate, and optimise the operation of the grid. Machine learning, a subset of artificial intelligence, enhances this process by constantly learning from information, which continually builds on data accuracy over time.

Predictive Analytics in Grid Management: Anticipating Conditions & Modelling

Grid sensors collect a vast amount of data, including voltage levels, current flow, and power quality metrics. Machine learning algorithms process this data to forecast grid conditions with remarkable precision. For example, by analysing historical patterns and current sensor data, predictive models can estimate demand fluctuations and identify potential overloads or bottlenecks in the grid. This foresight allows grid operators to proactively manage load distribution, mitigating the risk of blackouts and ensuring a stable power supply.

Predictive Maintenance for Power Grids

A key benefit of predictive analytics in grid management is its capability to foresee equipment failures. Traditionally, maintenance has been reactive, addressing issues only after they arise. Predictive maintenance shifts this paradigm by using machine learning to analyse sensor data and detect early signs of equipment degradation. For instance, unusual temperature readings or vibrations in transformers can indicate impending failures. By addressing these issues proactively, utilities can prevent costly outages and extend the lifespan of critical infrastructure.

Energy Grid Optimisation

Machine learning algorithms also play a crucial role in optimising grid operations. By analysing weather forecasts, these algorithms can predict the effect of environmental conditions on energy generation and usage.

For instance, the integration of solar and wind power into the grid is highly dependent on weather conditions. Predictive models can estimate energy production from these sources, enabling grid operators to manage supply and demand more efficiently. This optimisation decreases the dependence on fossil fuels, reduces operational costs, and improves the sustainability of the energy grid.

HECO’s Innovative Approach

Hawaiian Electric Company (HECO) exemplifies the successful application of predictive analytics and machine learning in addressing grid reliability challenges. Due to its remote location, HECO’s grid is more vulnerable to extreme weather events such as hurricanes and tropical storms, which can cause significant disruptions. To combat these challenges, HECO has invested heavily in smart grid technologies, including advanced sensors and control algorithms.

By leveraging predictive analytics, HECO monitors real-time grid conditions and forecasts potential disruptions. For example, machine learning models analyse weather data to predict the impact of storms on the grid, enabling HECO to implement pre-emptive measures such as redistributing loads and pre-positioning repair crews. Additionally, predictive maintenance practices have been adopted to identify and address equipment issues before they lead to failures, thereby improving grid reliability and reducing downtime.

Summary

The integration of predictive analytics and machine learning into grid management is a game-changer for the energy sector. These technologies enable utilities to anticipate and mitigate potential issues, optimise operations, and enhance overall grid reliability. HECO’s proactive approach to leveraging these tools highlights the transformative potential of advanced analytics in addressing the unique challenges faced by modern power grids. As these technologies continue to evolve, their impact on grid reliability and performance is set to grow, paving the way for a more resilient and efficient energy future.

About Polesaver

Polesaver is a leading manufacturer of wood pole life extension products and works with utilities globally. Get in touch to see how Polesaver can help support grid reliability

Data sources:

https://www.hawaiianelectric.com/clean-energy-hawaii/grid-modernization-technologies

Utility Poles – A growing market

In the realm of infrastructure development, wooden utility poles are renowned for their sustainability, cost-effectiveness, and versatility, yet it is the concrete and composite pole market which looks set for stratospheric growth over the next ten years. Read on to discover how the future can be bright for wooden utility poles.

The telecom industry has grown at a rapid rate, this is set to expand further with the growth of 5G networks in both developed and developing nations. A robust infrastructure is required to meet the demands of these upcoming projects to guarantee widespread coverage. This surge in demand for infrastructure extends to utility poles, which play a critical role in telecommunication networks worldwide. Additionally, the escalating adoption of electronic devices and technological advancements further boosts the telecom sector, thereby driving growth in the utility poles market.

Simultaneously, the global energy demand continues to rise, prompting electricity providers to expand their generation capabilities. Consequently, there is a heightened need for utility pole installations to support the expanding electricity grid.

While wooden poles dominated the market in 2021, there is a growing necessity for their replacement due to various decay issues over time. This has led to an increasing trend towards the adoption of composite materials, which are anticipated to witness growth in response to these challenges.

How Can Wood Retain Market Share in the Global Pole Market?

Building confidence in the use of wood through correct treatments and cost-effective protection is essential for ensuring the future of wood in the global pole market.

Promoting the Environmental Benefits of Wood 

As a renewable resource, sustainably sourced wood can be replenished naturally over time, giving it a huge environmental edge. The ability of wood to absorb and retain carbon further enhances its environmental credentials compared to the production costs of alternative materials. Additionally, wood processing and treatment methods are generally less energy-intensive, resulting in lower carbon emissions and reduced environmental impact throughout the manufacturing process. By supporting certified sustainable forestry initiatives, the use of wooden utility poles encourages the conservation and sustainable management of forested landscapes.

Shielding Critical Pole Sections

Across our diverse world, landscapes vary greatly, with some regions experiencing high humidity levels, while others contend with persistent pest invasions, such as termite infestations. In such environments, wood can deteriorate rapidly, posing challenges for utility pole installations. However, this need not be a barrier to using wood effectively. Polesaver provides a range of affordable and eco-friendly solutions designed to shield vulnerable sections of poles, ensuring their suitability for deployment in any environment. By fortifying critical areas, Polesaver products maximise the lifespan of utility pole assets, offering long-lasting protection and peace of mind to all installations.

Polesaver Sleeves

Polesaver Sleeves ensure total protection against ground-line decay in wooden utility poles. A tested & proven solution to hardening and strengthening the grid, used by utility companies worldwide

Polesaver Termi-Guard

Polesaver Termi-Guard is a marine-grade, stainless steel mesh sock that protects the subterranean section of a wooden utility pole against termite attack

Conclusion

The utility pole market is evolving rapidly, with an increasing emphasis on sustainability and performance. While the concrete and composite pole market may be experiencing unprecedented growth, the future remains bright for wooden utility poles. As we navigate the evolving landscape of infrastructure development and environmental sustainability, it is imperative to recognise the inherent advantages of wood and take proactive steps to ensure its continued relevance in the global pole market.

By promoting the environmental benefits of wood, implementing effective wood treatment methods, and utilising protective solutions like those offered by Polesaver, we can overcome these challenges and maximise the lifespan of wooden utility poles. Through sustainable forestry practices, innovative treatment technologies, and proactive preservation measures, we can ensure that wood retains its market share and remains a viable option for utility pole installations worldwide.

Contact the Polesaver Team

Please get in touch for more information using the details on our contact page. 

Polesaver Sleeves: The Ultimate Pole Protection Solution

In the world of utility infrastructure, reliability is everything. Every component plays a crucial role in ensuring uninterrupted service to communities and businesses. When it comes to wooden utility poles, protecting them against decay and deterioration is paramount. While traditional preservatives offer a desired service life, they don’t guarantee long-term protection. That’s where Polesaver steps in with their innovative, patented ground line barrier sleeve which is effective, reliable and guaranteed to maintain a barrier to the causes of decay.

About Copper in Oil

Copper in Oil preservatives are superior to water-based copper alternatives and contain potent antimicrobial properties that protect against decay. The service life of treated poles however varies on the conditions they are exposed to, with excessive heat and moisture impacting the effectiveness of the preservative over time. Periodic preservative reapplication may be necessary to maintain optimal protection over time, and regulatory compliance is necessary to ensure safe handling and application. Against ever changing legislation however, these are the best preservatives on the market and offer a substantial desired service life for utility infrastructure.

Polesaver: Long-Term Utility Pole Protection

Polesaver Sleeves are a non-toxic ground line barrier product which provide a comprehensive solution to protect utility poles at the critical ground line section, adding 20 years to pole life. This extended lifespan not only reduces maintenance frequency but also translates into significant cost savings over time. Acting as a protective shield, Polesaver Sleeves safeguard utility poles from decay, moisture, and insect damage at their most vulnerable point. Moreover, they contribute to environmental sustainability by minimising ground contamination, making treated wooden poles suitable for use even in environmentally sensitive areas.

Double Down on Protection: Polesaver and Preservatives

For utilities committed to unparalleled protection and guaranteed performance, integrating Polesaver Sleeves with preservative-treated utility poles represents the pinnacle of proactive infrastructure management. By combining these cutting-edge technologies, utilities can substantially reduce long-term maintenance costs while simultaneously advancing their environmental objectives.

In an era defined by reliability and sustainability, Polesaver offers a market-leading pole protection product which empowers utilities to secure their infrastructure and uphold high service standards for decades to come.

Request Polesaver Sleeve Specification

Request independent test data on Polesaver Sleeves or get in touch with us for more information.

The energy landscape in the United States is evolving rapidly, and with the Grid Resilience and Innovations Partnership (GRIP) funding now in the final stages, it’s the perfect time for energy companies to embrace innovative solutions like Polesaver. The funding initiative, aimed at modernising and bolstering the U.S electrical grid, presents a golden opportunity for companies to enhance energy efficiency, reduce emissions, and contribute to the delivery of reliable, clean, and affordable energy to American families and businesses.

Building Grid Resilience in the Toughest of Circumstances

Polesaver aligns seamlessly with the programme’s objectives, supporting activities that specifically reduce the likelihood and consequences of impacts to the electric grid caused by extreme weather, wildfires, and natural disasters.

The initiative prioritises projects that generate the greatest community benefit, be it in rural or urban areas, by effectively minimising the likelihood and consequences of disruptive events.

Choose Products that Meet GRIP Funding Criteria

Polesaver’s innovative pole protection products meet stringent funding criteria which will allow networks to claim government grants when specifying it within proposals.

Polesaver Sleeves provide dual-layer rot prevention, creating an airtight and watertight seal on pole surfaces. This unique seal locks in wood preservatives, reduces moisture entry, and prevents decay at the upper sleeve.

The non-toxic sleeves make ground line decay impossible, increasing pole life, maintaining strength, and enhancing safety and grid reliability whilst also reducing the requirement for costly pole inspections.

Moreover, Polesaver minimises ground contamination by preventing the loss of biotoxins, ensuring a sustainable and reliable solution, even in extreme weather conditions, and is the only proven solution in the market. Independently tested, Polesaver sleeves maintain pole strength over time, enhancing safety and grid reliability. 

Polesaver Fire Protection Fabric is used to protect utility poles from low-level bush, crop, grass and wildfires. It is proven in volume use and offers a substantial cost savings by significantly reducing the need to replace poles after bush and wildfires. The highly UV stable material is durable enough to withstand multiple fires, and is quick and simple to apply.

Request copies of independent reports on Polesaver Fire Fabric, including a full-scale field trial on over 1,000 poles

The Grid Resilience and Innovation Partnerships Deadline

Those still to complete the trio of projects required to be eligible for funding have a limited time to consider Polesaver as part of their 2024 plans with the deadline for utilities set for April 17th.

Polesaver’s innovative solutions are already trusted and used in over 30 countries worldwide and are an ideal solution for upgrading your infrastructure, protecting your network, and supporting the evolution of the U.S. electrical grid – the future of energy innovation is now.

Get in touch to find out more about Polesaver’s total ground line barrier sleeve or request independent test data.

Methods for Evaluating Wood Preservatives

When it comes to evaluating wood preservatives, accelerated wood tests are a common method. However, these tests have limitations due to their inability to replicate the complex interactions found in natural environments. Relying solely on accelerated tests to predict how wood preservatives perform in the real world has its limitations, even though these tests provide valuable insights. It’s crucial to combine these accelerated tests with real-world testing for a more complete understanding of wood preservative performance.

Inadequate Simulation of Natural Weathering

Accelerated wood tests aim to mimic natural weathering through controlled cycles of UV light, moisture, and temperature changes over short periods. While this can provide an idea of how a wood preservative might perform, it doesn’t account for the variability and complexity of real-world conditions. Natural weathering involves varying angles of sunlight, fluctuating temperatures, intermittent rainfall, and seasonal changes – all of which interact in ways that are difficult to replicate in a lab setting. 

For instance, changes in wood colour due to natural weathering are gradual and influenced by numerous factors, including the direction the wood faces relative to the sun and its exposure to elements like rain and wind. These variables create a dynamic environment that accelerated tests can’t fully emulate, leading to discrepancies between test results and actual performance in outdoor settings.

Challenges with Chemical Leaching

Another critical aspect where accelerated tests fall short is in simulating chemical leaching in wood. Leaching refers to the process by which preservative chemicals are washed out of the wood by rainwater or migrate to the soil. In real-world conditions, this process is influenced by the type and amount of rainfall, the drying time between rain events, and the specific wood and preservative types involved.

Accelerated tests typically use extreme conditions on small wood samples over short periods, which can lead to overestimations or underestimations of leaching rates. For example, studies have shown that the leaching of chromated copper arsenate (CCA) from treated wood varies significantly with natural rainfall patterns and the intervals of drying between rains, while leaching of water-repellent wood preservatives under accelerated testing can be significantly lower than observed in corresponding real-world use. These nuances are difficult to capture in a laboratory setting, where the conditions are more controlled and less variable.

The Use of Controlled Fungal Species

A key difference is the controlled fungal species used in accelerated tests versus the variety encountered in real-world environments. Accelerated tests typically use a limited set of fungal species, often focusing on the most aggressive wood-decaying fungi to ensure rapid results. For instance, common species used include Aureobasidium pullulans, Aspergillus niger, and Penicillium spp. These fungi are selected for their ability to thrive under the artificial conditions created in laboratory settings, such as high humidity and controlled temperature, which are designed to expedite fungal growth and wood decay.

In contrast, real-world conditions expose wood to a broader spectrum of fungal species that vary based on geographical location, climate, and environmental factors. These fungi interact with the wood in more complex ways, influenced by fluctuating moisture levels, temperature changes, and the presence of other microorganisms. This diversity and variability can significantly impact the effectiveness of wood preservatives in real-world use, as some preservatives may be more effective against the fungi used in laboratory tests but less so against other species prevalent in natural settings.

Fungi’s Ability to Evolve and Adapt

Another significant limitation of accelerated tests is their inability to account for the evolutionary adaptability of fungi. In real-world environments, fungi continuously evolve, developing resistance to wood preservatives over time. This evolutionary process, influenced by genetic variations and environmental pressures, enables fungi to adapt and survive in changing conditions. Studies have shown that fungal species can undergo genetic and phenotypic changes that enhance their ability to degrade wood, even in the presence of preservatives. This dynamic evolutionary process is difficult to replicate in the static conditions of accelerated tests, leading to potential underestimations of fungal resistance and preservative longevity.

Need for Long-Term Field Studies

Given these limitations, it’s clear that while accelerated tests can provide useful initial data, they should be complemented with long-term field studies in the region or climate of proposed use. Such field studies are crucial for understanding how wood preservatives perform over extended periods under actual environmental conditions.

Field studies can capture the full range of interactions and changes that occur in natural settings, providing a more accurate assessment of wood preservative efficacy and longevity. 

Conclusion

In conclusion, while accelerated tests are a valuable tool in the early stages of wood preservative evaluation, their inability to fully replicate natural weathering and chemical leaching processes limits their predictive power. To ensure reliable and comprehensive assessments, these tests must be supplemented with long-term field research that considers the myriad factors influencing wood preservation in real-world environments. This comprehensive approach ensures a more accurate evaluation of wood preservatives, considering the evolution of fungi and their impact on long-term wood preservative performance.

Polesaver is a leading manufacturer of wood pole life extension products and works with utilities globally. Get in touch for more information on wood testing. 

Contact Polesaver

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Data Sources

https://microchemlab.com/test/astm-d3273-fungal-resistance-test-coated-surfaces

https://awpa.com/info/pem

https://bioresources.cnr.ncsu.edu/

https://bmcecolevol.biomedcentral.com

https://www.paint.org/

Revolutionising the Utility Pole Landscape in South America: Paving the Way for Sustainability

The adoption of water-based copper wood preservatives in some South American countries to safeguard wooden utility poles against decay is prompting a potential departure from wood towards alternative pole materials. This shift, observed in Europe, has resulted in a decline of approximately four hundred thousand wooden pole sales annually over the past few years.

Navigating Challenges in the Utility Industry

Utilities utilising water-based copper wood preservative-protected poles face multiple challenges concerning wooden utility poles. The primary concern revolves around their perceived shorter lifespan, typically lasting 20 years or less when compared to engineered poles made from composites, concrete, and steel.

Instances of premature wooden pole failures have raised safety and reliability concerns. While initial pole purchase costs are often compared, a comprehensive evaluation reveals that the annualized cost of wooden poles frequently exceeds that of alternative materials when considering shorter service life and the subsequent increase in pole replacement costs.

From an environmental standpoint, wooden poles are viewed as having a low impact compared to alternatives. However, this factor tends to carry a lower priority in the decision-making process for utilities compared to safety and reliability requirements. Increasing apprehension about disposal costs and potential legislative changes affecting the end-of-life disposal of treated wooden poles are driving the adoption of long-life engineered poles in the European pole market.

A Sustainable Path Forward in South America

To effectively address these challenges and offer a competitive and sustainable solution, the wooden pole industry may consider providing utilities with an option for enhanced lifespan wooden poles. This can be achieved by incorporating established, proven, and tested total ground line barrier sleeves, offering several key advantages:

• Increased Pole Life: The protection of the most vulnerable part of the pole extends its lifespan to 40 years or more, addressing concerns about a shorter lifespan.
• Reduced Annualised Pole Costs: Significantly increasing pole life reduces annualized pole costs, making wooden poles a cost-competitive option compared to alternative materials.
• Improved Safety: Total ground line barrier sleeves maintain pole strength over time, enhancing safety for both employees and the public.
• Extended Inspection Intervals: By preventing decay, utilities can extend intervals between pole inspections, leading to a substantial reduction in maintenance costs.
• Enhanced Grid/Network Reliability: Maintaining pole strength over time improves overall grid and network reliability, especially in adverse weather conditions.
• Reduced CO2 Emissions: With an extended lifespan, the annualised CO2 emissions of replacement wooden poles can be significantly reduced, making them a more environmentally sustainable option.

In Conclusion

In a critical juncture for some of the South American pole industry, the traditional reliance on wooden utility poles faces increasing challenges. A transformative shift towards innovative solutions has the potential not only to meet utility demands but also to establish wood as the unparalleled material choice, revitalising the market for wooden power and telecom poles. This forward-thinking approach not only addresses immediate challenges but also ensures the future sustainability of the wooden utility pole industry in South America.

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Get in touch to find out more about Polesaver’s total ground line barrier sleeve or request independent test data.

The European pole industry is currently seeing a growing move away from wood to alternative materials. 

Over the last few years this has led to a reduction in European wooden poles sales of around four hundred thousand poles a year. However, there can be a promising and sustainable future for wooden poles.

The Use of Wooden Poles amongst European Utilities

A Challenging Time for the Utility Industry

Utilities in Europe face several challenges regarding wooden utility poles, the primary issue being their perceived shorter lifespan when compared to alternative longer lasting engineered pole poles made from composites, concrete and steel.

Instances of premature wooden pole failures have raised safety and reliability concerns for utilities. And while initial pole purchase costs are frequently compared, a comprehensive evaluation reveals that the annualised cost of wooden poles often exceeds the cost of poles made from alternative materials, when shorter wooden pole service life and the consequent increase in pole replacement costs are taken into account.

Whilst new “longer life” wood preservatives have been promoted by the pole industry utility, feedback indicates that the lack of long-term test data and higher costs are hindering the adoption of this option as an alternative.

Utilities see that the environmental impact of wooden poles is very low when compared to alternative materials but for the majority of utilities, this feature carries a lower ranking in the decision-making process than the critical key requirements for safety and reliability.

Factor in increasing apprehension about disposal costs and potential legislative changes affecting the end-of-life disposal of treated wooden poles and it is easy to see why the manufacturers of long-life engineered poles are gaining traction in the European pole market.

The Way Forward – A Sustainable Solution

To effectively confront these challenges and present a solution that is both competitive and sustainable, the wooden pole industry may explore the provision of an enhanced lifespan wooden pole option to utilities. This can be achieved through the incorporation of established, proven and tested total ground line barrier sleeves, offering the following key advantages:

• Increased Pole Life: With the most vulnerable part of the pole protected, pole lifespan is increased to 40 years or more, addressing the perceived shorter lifespan concern.
• Reduced Annualised Pole Costs: Increasing pole life significantly reduces the annualised pole costs, making wooden poles a cost competitive option when compared to alternative materials.
• Improved Safety: Total ground line barrier sleeves maintain pole strength over time enhancing safety for both employees and the public.
• Extended Inspection Intervals: Through the prevention of decay, utilities can extend the intervals between pole inspections, leading to a substantial reduction in maintenance costs.
• Enhanced Grid/Network Reliability: Improve overall grid and network reliability, particularly in adverse weather conditions by ensuring pole strength is maintained over time.
• Reduced CO2 Emissions: With an extended lifespan, the annualised CO2 emissions of replacement wooden poles can be significantly reduced, making them an even more environmentally sustainable option.

Conclusion

In a pivotal moment for the European pole industry, the conventional reliance on wooden utility poles encounters mounting obstacles.

A transformative shift towards championing innovative solutions that not only meet the demands of utilities but also solidifies wood as the unparalleled material choice holds the power to not just revitalise the market for wooden power and telecom poles, but to forge a pathway towards a sustainable, resilient, and eco-friendly infrastructure.

This strategic forward-thinking approach not only addresses immediate challenges but also safeguards the future of the wooden utility pole industry in Europe.

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