--- title: Grid Connection, HV/MV Substations, Solar & BESS | Entegro description: Entegro designs, builds and maintains grid connections, HV/MV substations, commercial solar PV and battery energy storage (BESS) in Ireland and the UK. image: https://entegro.com/hubfs/Featured%20Image.png --- [Skip to main content](https://entegro.com/energy-and-power#main) [![Entegro](https://entegro.com/hs-fs/hubfs/raw_assets/public/stoicaXentegro/images/entegro-logo.png?width=59&height=64&name=entegro-logo.png)](https://entegro.com?hsLang=en) - [Telecoms](https://entegro.com/telecoms?hsLang=en) - [Energy & Power](https://entegro.com/energy-and-power) - [Case Studies](https://entegro.com/projects?hsLang=en) - About ![](https://entegro.com/hubfs/raw_assets/public/stoicaXentegro/images/nav-chevron.svg) - [About Entegro](https://entegro.com/about-entegro?hsLang=en) - [People and culture](https://entegro.com/people-and-culture?hsLang=en) - [Careers](https://careers.entegro.ie/) - [Insights](https://entegro.com/insights?hsLang=en) - [Get in touch](https://entegro.com/contact-us?hsLang=en) [Get in touch](https://entegro.com/contact-us?hsLang=en) ![energy-hero](https://entegro.com/hs-fs/hubfs/energy-hero.webp?width=1600&height=1071&name=energy-hero.webp) Energy and Power # Future-ready, resilient power systems that perform. We design, build and maintain substations, high voltage systems, solar and battery storage for renewables developers, utilities and critical sites across Ireland and the UK. [See what we do](https://entegro.com/energy-and-power#hs_cos_wrapper_main_content-module-5) [Read energy case studies](https://entegro.com/projects?industry=power&hsLang=en) Clients include ![Kingsoan](https://entegro.com/hs-fs/hubfs/Kingsoan.png?width=209&height=117&name=Kingsoan.png) ![Tesco](https://entegro.com/hs-fs/hubfs/Tesco.png?width=209&height=117&name=Tesco.png) ![Americold](https://entegro.com/hs-fs/hubfs/Americold.png?width=209&height=117&name=Americold.png) ![shannon](https://entegro.com/hs-fs/hubfs/shannon.png?width=209&height=117&name=shannon.png) ![sretaw](https://entegro.com/hs-fs/hubfs/sretaw.png?width=209&height=117&name=sretaw.png) ![Kingsoan](https://entegro.com/hs-fs/hubfs/Kingsoan.png?width=209&height=117&name=Kingsoan.png) ![Tesco](https://entegro.com/hs-fs/hubfs/Tesco.png?width=209&height=117&name=Tesco.png) ![Americold](https://entegro.com/hs-fs/hubfs/Americold.png?width=209&height=117&name=Americold.png) ![shannon](https://entegro.com/hs-fs/hubfs/shannon.png?width=209&height=117&name=shannon.png) ![sretaw](https://entegro.com/hs-fs/hubfs/sretaw.png?width=209&height=117&name=sretaw.png) ![Kingsoan](https://entegro.com/hs-fs/hubfs/Kingsoan.png?width=209&height=117&name=Kingsoan.png) ![Tesco](https://entegro.com/hs-fs/hubfs/Tesco.png?width=209&height=117&name=Tesco.png) ![Americold](https://entegro.com/hs-fs/hubfs/Americold.png?width=209&height=117&name=Americold.png) ![shannon](https://entegro.com/hs-fs/hubfs/shannon.png?width=209&height=117&name=shannon.png) ![sretaw](https://entegro.com/hs-fs/hubfs/sretaw.png?width=209&height=117&name=sretaw.png) ![Kingsoan](https://entegro.com/hs-fs/hubfs/Kingsoan.png?width=209&height=117&name=Kingsoan.png) ![Tesco](https://entegro.com/hs-fs/hubfs/Tesco.png?width=209&height=117&name=Tesco.png) ![Americold](https://entegro.com/hs-fs/hubfs/Americold.png?width=209&height=117&name=Americold.png) ![shannon](https://entegro.com/hs-fs/hubfs/shannon.png?width=209&height=117&name=shannon.png) ![sretaw](https://entegro.com/hs-fs/hubfs/sretaw.png?width=209&height=117&name=sretaw.png) ![Kingsoan](https://entegro.com/hs-fs/hubfs/Kingsoan.png?width=209&height=117&name=Kingsoan.png) ![Tesco](https://entegro.com/hs-fs/hubfs/Tesco.png?width=209&height=117&name=Tesco.png) ![Americold](https://entegro.com/hs-fs/hubfs/Americold.png?width=209&height=117&name=Americold.png) ![shannon](https://entegro.com/hs-fs/hubfs/shannon.png?width=209&height=117&name=shannon.png) ![sretaw](https://entegro.com/hs-fs/hubfs/sretaw.png?width=209&height=117&name=sretaw.png) ![Kingsoan](https://entegro.com/hs-fs/hubfs/Kingsoan.png?width=209&height=117&name=Kingsoan.png) ![Tesco](https://entegro.com/hs-fs/hubfs/Tesco.png?width=209&height=117&name=Tesco.png) ![Americold](https://entegro.com/hs-fs/hubfs/Americold.png?width=209&height=117&name=Americold.png) ![shannon](https://entegro.com/hs-fs/hubfs/shannon.png?width=209&height=117&name=shannon.png) ![sretaw](https://entegro.com/hs-fs/hubfs/sretaw.png?width=209&height=117&name=sretaw.png) The opportunities ## When energy and power systems need to change. Rising costs, new connections and ageing equipment. Each one is a chance to reassess, add capacity and make your site more resilient. 01 ### Energy costs keep rising Generating and storing your own power makes what you pay more predictable. 02 ### Critical sites need constant power Planned maintenance and a fast response keep essential operations running. 03 ### Equipment reaches end of life Refurbishing or replacing it extends asset life and restores capacity. 04 ### Demand outgrows capacity New connections and upgraded substations power growth. 05 ### Systems need to work together Generation, storage and the grid deliver more when you design them as one. 06 ### Sites need to modernise while they run We plan upgrades around live operations, so your site keeps working. What we do ## Turning each opportunity into a result. One team for energy and power. From the first study to the last service visit. - 01 ### Power network Plan for rising demand. Our engineers model your network for electrification, then design and build high and medium voltage (HV/MV) electrical networks and substations. When you need us Electrification plans, a new site, a feasibility study or a technical specification. What you get A design that’s ready to build, with room to grow. ![power](https://entegro.com/hs-fs/hubfs/power.webp?width=655&height=358&name=power.webp) - 02 ### Generation and storage Generate and store power on site. We design and build solar PV and battery storage (BESS) for developers, utilities and large energy users. When you need us Grid connection delays, a non-firm or phased offer, rising energy costs or sustainability targets. What you get Sustainable power on site sooner, at a predictable cost. ![storage](https://entegro.com/hs-fs/hubfs/storage.webp?width=655&height=358&name=storage.webp) - 03 ### Grid connection From connection offer to energisation. Our engineers take generation, storage and network projects through planning, pre-construction and construction. When you need us A new connection, more capacity or grid reinforcement. What you get A site ready to go live as soon as it’s connected. ![grid](https://entegro.com/hs-fs/hubfs/grid.webp?width=655&height=358&name=grid.webp) - 04 ### Power maintenance Keep critical power running. Our authorised teams operate, maintain and upgrade HV/MV networks, substations, generation and battery storage, on call 24/7. When you need us Ageing equipment, capacity limits, a new site that needs maintenance cover, or a need for 24/7 response. What you get Reliable power, longer asset life and 24/7 support. ![power-1](https://entegro.com/hs-fs/hubfs/power-1.webp?width=655&height=358&name=power-1.webp) - 05 ### Energy assurance and partnerships Get more value from the power you produce. Our monitoring proves how your assets perform, so you can earn more through power purchase agreements (PPAs) and flexibility contracts. When you need us A new onsite system, a need to prove return on investment, or volatile energy costs. What you get Proof your assets are delivering, and better energy deals they’ve earned. ![assurance (1)](https://entegro.com/hs-fs/hubfs/assurance%20(1).webp?width=655&height=358&name=assurance%20(1).webp) THE OUTCOMES ## Better performance. Lower costs. More resilience.   01 ### Reduce operating cost Use energy more efficiently and get more from every asset. 02 ### Increase resilience Keep critical operations running. 03 ### Improve asset performance Get more output from new and existing equipment. 04 ### Increase capacity Make room for new connections and future growth. 05 ### Extend asset life Refurbish and upgrade, rather than replace too early. 06 ### Support the energy transition Bring generation, storage and the grid together. WHY ENTEGRO ## Engineering depth. Proven delivery. 1. 01 ### Specialist engineers Solar and high voltage engineers from ACEL Energy and our partner Nahanagan Electrical. 2. 02 ### Practical problem-solving We plan around live sites, real loads and real deadlines. 3. 03 ### Whole-lifecycle capability From the first study and design through to maintenance and decommissioning. 4. 04 ### Networks and power together One partner that understands connectivity, technical sites and power. 5. 05 ### Flexible ways of working Hand us the whole programme, or bring in the specialists you need, when you need them. 6. 06 ### Certified, safe delivery Certified to ISO 9001 (quality), 14001 (environment), 45001 (health and safety) and 27001 (information security). ![execution](https://entegro.com/hs-fs/hubfs/execution.webp?width=1082&height=1623&name=execution.webp) Our energy specialists ## Worked with ACEL Energy or Nahanagan? Let’s continue the conversation. The same energy and power specialists you know, with Entegro’s strength and depth behind them. ![Acel](https://entegro.com/hs-fs/hubfs/Acel.webp?width=400&height=267&name=Acel.webp) ### ACEL Energy Solar PV, battery storage and energy management. [Explore ACEL Energy](http://acelenergy.ie) ![Nahanagan](https://entegro.com/hs-fs/hubfs/Nahanagan.webp?width=400&height=267&name=Nahanagan.webp) ### Nahanagan High voltage engineering, grid connections and substations [Explore Nahanagan](https://www.nahanagan.com/) Our work ## Capability, proven through delivery. See all energy case studies ![Sretaw – Landfill Solar Farm](https://entegro.com/hs-fs/hubfs/CS_Sretaw-Landfill_hero.webp?width=2784&name=CS_Sretaw-Landfill_hero.webp) 6.45 MWp solar farm Power ### Turning a capped landfill into a 6.45 MWp solar farm [View case study](https://entegro.com/projects/landfill-to-solar-farm?hsLang=en) Full power lifecycle ## Capability at every stage of your power assets’ life. Electrical infrastructure and grid Energy generation, storage and management ![Previous system](https://entegro.com/hubfs/raw_assets/public/stoicaXentegro/images/testimonial-arrow.svg) ![Next system](https://entegro.com/hubfs/raw_assets/public/stoicaXentegro/images/testimonial-arrow.svg) Electrical infrastructure and grid Energy generation, storage and management - ![Two Entegro engineers reviewing a street-level network map on a large monitor](https://entegro.com/hs-fs/hubfs/Survey%20%26%20Design-1.webp?%20Design-1.webp&?%20Design-1.webp&width=620&height=242&name=Survey%20%26%20Design-1.webp?%20Design-1.webp&?%20Design-1.webp) 01 ### Survey and design - High voltage and medium voltage grid connection applications - Substation layout design, civil engineering schematics and single-line diagrams - Protection coordination studies and power flow analysis - ![Two field technicians in hard hats and hi-vis vests working on a fibre joint at a roadside](https://entegro.com/hs-fs/hubfs/DSC_2405_72-v2__FocusFillWzY2OSw0NDYsInkiLDBd%202.webp?width=620&height=242&name=DSC_2405_72-v2__FocusFillWzY2OSw0NDYsInkiLDBd%202.webp) 02 ### Build and commission - HV/MV switchgear installation, transformer positioning and busbar fitting - Substation civil construction, trenching and earthing grid installation - System energisation, relay testing and utility compliance sign off - ![Technician wiring an electrical control panel inside a greenhouse full of red poinsettias](https://entegro.com/hs-fs/hubfs/29960%201.webp?width=620&height=242&name=29960%201.webp) 03 ### Operate and maintain - 24/7 senior authorised person emergency dispatch and fault response - High-voltage field maintenance, transformer oil testing and thermal audits - Scheduled load testing, protection testing and switchgear servicing - ![Electrical substation with steel gantries, insulators and overhead power lines](https://entegro.com/hs-fs/hubfs/low-angle-view-men-working-roof-against-sky%202.webp?width=620&height=242&name=low-angle-view-men-working-roof-against-sky%202.webp) 04 ### Transform and retire - Substation refurbishments and transformer replacements - Grid connection capacity expansion and voltage upgrades - End-of-life plant decommissioning and site clearance - ![Hand pointing at technical building plans displayed on a laptop screen](https://entegro.com/hs-fs/hubfs/Survey%20%26%20Design-2.webp?%20Design-2.webp&?%20Design-2.webp&width=620&height=242&name=Survey%20%26%20Design-2.webp?%20Design-2.webp&?%20Design-2.webp) 01 ### Survey and design   - Solar PV yield modelling, shading analysis and structural roof and ground audits - Battery energy storage system (BESS) sizing and tariff modelling - Energy management system (EMS) architecture and SCADA control design - ![Worker in a hard hat and orange vest inspecting rooftop solar panels at sunset](https://entegro.com/hs-fs/hubfs/Build%20%26%20commision-1.webp?%20commision-1.webp&?%20commision-1.webp&width=620&height=242&name=Build%20%26%20commision-1.webp?%20commision-1.webp&?%20commision-1.webp) 02 ### Build and commission - Ground mounted solar PV EPC for airside, industrial and utility sites - High-density rooftop solar PV across live logistics, retail and pharma facilities - BESS container positioning, inverter integration and grid tie-in - ![Worker in a hard hat and safety gear inspecting a row of rooftop solar panels](https://entegro.com/hs-fs/hubfs/Operate%20%26%20Mantain-1.webp?%20Mantain-1.webp&?%20Mantain-1.webp&width=620&height=242&name=Operate%20%26%20Mantain-1.webp?%20Mantain-1.webp&?%20Mantain-1.webp) 03 ### Operate and maintain - EMS peak-tariff load shifting and automated demand response - Remote monitoring of generation yield and performance ratio - Battery health audits, inverter servicing and panel maintenance - ![Installer kneeling on a roof fitting solar panels under a blue sky](https://entegro.com/hs-fs/hubfs/low-angle-view-men-working-roof-against-sky%201.webp?width=620&height=242&name=low-angle-view-men-working-roof-against-sky%201.webp) 04 ### Transform and retire - Solar PV repowering and module efficiency upgrades. - Inverter replacements and EMS software upgrades. - Battery module recycling, cell replacements and system decommissioning. Lifecycle Electrical infrastructure and grid 01 / 02 Bring us in at one stage, or for the whole lifecycle with fewer handovers. HOW WE WORK ## The whole programme, or the specialism you need. 01 ### Full Turnkey One point of accountability from design and procurement through to build, quality and reporting. 02 ### Professional services We embed our engineers in your programme, working to your plan. 03 ### Managed service We deliver and maintain your network or power assets to the service levels and KPIs you set. 04 ### Advisory We carry out feasibility studies, design assurance and due diligence before you commit to build. 05 ### Bespoke Joint ventures, alliances and framework agreements shaped around how you work. ![supplied wind imagery-1](https://entegro.com/hs-fs/hubfs/supplied%20wind%20imagery-1.webp?width=1392&height=520&name=supplied%20wind%20imagery-1.webp) Start a conversation ## Planning a connection or an upgrade? Tell us the site, the load and the timeline. We'll show you how we'd do it. [Talk to Entegro](https://entegro.com/contact-us?hsLang=en) [![Entegro, a Kyntus Group company](https://entegro.com/hs-fs/hubfs/raw_assets/public/stoicaXentegro/images/entegro-logo-reversed.png?width=82&height=88&name=entegro-logo-reversed.png)](https://entegro.com/?hsLang=en) Engineering the infrastructure that connects and powers modern life. Markets - [Telecoms & Networks](https://entegro.com/telecoms?hsLang=en) - [Energy & Power](https://entegro.com/energy-and-power) Explore - [Case Studies](https://entegro.com/projects?hsLang=en) - [About Entegro](https://entegro.com/about-entegro?hsLang=en) - [People & Culture](https://entegro.com/people-and-culture?hsLang=en) - [Careers](https://careers.entegro.ie/) - [Insights](https://entegro.com/insights?hsLang=en) Contact - [Get in touch](https://entegro.com/contact-us?hsLang=en) - [Our locations](https://entegro.com/contact-us#hs_cos_wrapper_main_content-module-6) © 2026 Entegro. 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