Phathom Energies – Integrated Energy Solutions
Phathom Energies is an Irish based energy and engineering company focused on delivering practical, future ready power solutions for commercial, industrial and infrastructure clients. We specialise in solar PV, battery energy storage systems and integrated energy engineering that give organisations greater control over how they generate, store and use electricity.
Energy is changing rapidly. Electricity prices fluctuate, grid capacity is tightening and businesses are under pressure to decarbonise while maintaining reliable operations. Battery Energy Storage Systems are now becoming essential infrastructure rather than optional technology. Phathom Energies helps clients understand, deploy and benefit from these systems through expert design, procurement and delivery.
Why customers need Battery Energy Storage Systems
Battery storage provides immediate and long term value across multiple areas of energy management and resilience.
Cost control and energy arbitrageElectricity pricing increasingly varies throughout the day. A BESS allows energy to be stored when prices are low and used when prices rise. This process, known as energy arbitrage, can significantly reduce electricity costs for high energy users and improve the return on renewable installations such as solar PV.
Peak shaving and demand managementMany commercial and industrial users pay substantial peak demand charges based on their highest periods of electricity usage. A battery can discharge during these peaks, reducing grid import and lowering demand charges. This gives businesses greater control over operating costs and protects against future tariff increases.
Backup power and energy securityPower interruptions can be costly and disruptive. A BESS provides immediate backup power and can be integrated with solar or generators to create highly resilient energy systems. For manufacturing, data centres, logistics hubs and critical services, this continuity is increasingly important.
Reducing reliance on peaker plants and diesel generationTraditionally, peak electricity demand has been met by expensive and carbon intensive peaker plants or onsite diesel generators. Battery storage provides a cleaner and often more economical alternative. Stored energy can be deployed instantly to meet demand spikes, reducing emissions and operating costs.
Greater control over energy usageA BESS gives businesses and energy users direct control over how and when electricity is used. This flexibility allows optimisation of grid import, onsite generation and stored energy to suit operational needs. As electricity markets evolve, this control becomes a major strategic advantage.
Renewable integration and carbon reductionBattery storage enables higher utilisation of solar PV and other renewable generation by storing excess energy for later use. This increases self-consumption, reduces carbon emissions and supports corporate sustainability targets without compromising operational reliability.
Grid support and future energy marketsFront of meter battery systems can also participate in grid balancing and support services, helping stabilise electricity networks while generating revenue in certain markets. As grids transition toward higher renewable penetration, storage will play a central role in maintaining stability.
Phathom Energies approach
Phathom Energies delivers fully integrated energy solutions tailored to each client’s operational and commercial objectives. Our services include feasibility assessment, engineering design, procurement, international supply, civil and electrical works coordination, installation and commissioning. We deliver both behind the meter and front of meter systems, from commercial facilities to utility scale infrastructure.
Supported by an experienced multidisciplinary team and a trusted global supply network, we provide reliable and scalable systems that reduce costs, increase resilience and give clients real control over their energy future.
Our mission is simple. To help organisations take control of power through intelligent storage, clean generation and robust engineering, delivering energy infrastructure that is efficient, resilient and built for the decades ahead.
PHATHOM ENERGIES: Bringing Depth, Balance, Innovation, and Sustainability to Energy and the Built Environment.

Phathom Energies is a project-led energy solutions company delivering integrated solar and battery storage systems for commercial, industrial and infrastructure clients across Ireland, the UK and international markets. The company focuses on practical, bankable energy solutions that reduce operating costs, strengthen energy security and support long-term decarbonisation.
Our core offering includes the design, procurement, delivery and project management of solar PV and Battery Energy Storage Systems (BESS), both in front of the meter and behind the meter. This allows clients to participate directly in energy markets where appropriate, while also optimising on-site energy generation, storage and consumption to reduce reliance on grid power and exposure to volatile electricity pricing.
Phathom Energies provides complete project lifecycle support. From initial feasibility and commercial modelling through to system specification, procurement and delivery, we work closely with clients to ensure each solution is technically robust and financially viable. Our team manages supplier engagement, logistics and delivery, ensuring that all equipment and systems are sourced from trusted international manufacturers and delivered efficiently to site.
Through our established global supply and delivery network, we offer access to high-quality solar modules, inverters, battery systems and associated energy technologies. These partnerships allow us to deliver competitive, scalable solutions while maintaining strict quality and performance standards. We also provide EPS based solutions and integrated energy systems tailored to client and project requirements, ensuring reliability and continuity of supply in both grid-connected and standalone applications.
Phathom Energies combines engineering understanding, commercial insight and international procurement capability to deliver energy infrastructure that performs reliably over the long term. Our approach is collaborative and solution focused, supporting developers, asset owners, businesses and public sector clients in transitioning to resilient, low-carbon energy systems.

Typical Needs and Applications for Battery Energy Storage Systems (BESS)
Battery Energy Storage Systems are rapidly becoming essential infrastructure for modern energy users. Rising electricity costs, grid instability and the growth of renewable generation mean that storage is now central to reliable and cost-efficient power management.
Phathom Energies places BESS at the centre of its offering, delivering tailored storage solutions for a wide range of commercial, industrial and infrastructure applications.
1. Energy Cost Reduction and Peak ShavingOne of the most common drivers for BESS adoption is the reduction of electricity costs. Many commercial and industrial users face high peak demand charges. A BESS can discharge during peak tariff periods, reducing grid import and lowering maximum demand charges. This allows businesses to flatten their load profile and gain greater control over energy spend.