Ireland’s solar sector has moved from a standing start to a mainstream part of the national energy mix in a few short years, with installed capacity now surpassing 2 GW across utility-scale, commercial, and residential segments. Behind that growth sits a fragmented but increasingly professionalised installer market, ranging from pan-European renewable energy groups to long-established family businesses that have grown alongside the SEAI grant schemes. This article presents a curated Top 10 of PV Installers in Ireland, selected for overall scale, market presence, and significance within the Irish solar landscape.

The full research dataset, including verified contact information, LinkedIn profiles, certification status, and installed capacity figures for all 75+ companies, is available exclusively through the Renewables.Digital Research Platform.

Top 10 – Curated Selection

Sorted by overall scale and significance within the Irish PV installer landscape. Installed capacity figures are shown where publicly available; for many regional specialists this data is not disclosed. Management names and precise revenue figures are intentionally excluded from this overview.

Industry Overview: Solar PV Installation in Ireland

Ireland’s PV installer market sits at an unusual midpoint between a young industry and a maturing one. Utility-scale solar only connected its first project in 2022, yet the country has already passed 2 GW of installed capacity, and more than 155,000 homes, businesses, and communities now generate their own solar power. The companies in this curated selection span three distinct archetypes: pan-European renewable energy groups with local subsidiaries, specialist decarbonisation contractors serving large industrial clients, and regionally rooted installers that built their reputation on residential and farm-scale systems before expanding into commercial work.

Groups and Utility-Scale Players

At the top of the market, Greenvolt Group operates in Ireland through its Greenvolt Next subsidiary, the successor to the long-established Enerpower brand, with a portfolio built up over two decades and clients including Lidl, Pfizer, and Sanofi. BNRG Renewables, active since 2007, develops and constructs grid-connected solar farms across the country and has partnered with international investors on portfolios exceeding 200 MW. These groups typically combine in-house engineering with long-term asset ownership or power purchase agreement structures, distinguishing them from installers that work primarily on a supply-and-fit basis.

Commercial and Industrial Specialists

Astatine Limited and AEI Alternative Energy Ireland focus on the commercial and industrial end of the market, delivering turnkey solar PV alongside heat pumps, battery storage, and broader decarbonisation services for manufacturing and agri-food clients. This segment has grown quickly as Irish businesses look to lock in electricity costs and meet emissions targets, often through funded or PPA-based models that avoid upfront capital outlay.

Regional and Established Installers

Firms such as Ashgrove Renewables, TriNRG, NuSolas Energy, Eco Horizon, GridSolar, and JFW Renewables represent the backbone of Ireland’s regional installer base. Several combine solar with heat pump installation and home energy upgrades, reflecting the SEAI’s integrated approach to grant support, while others such as TriNRG have moved into ground-mounted utility parks alongside their core residential and agricultural work. Geographic spread is a defining feature of this segment, with installers concentrated around Munster, Connacht, and the greater Dublin area serving customers well beyond their home counties.

Market Outlook

Consolidation is likely to continue as larger European groups acquire or rebrand established Irish operators, following the pattern already seen with Enerpower’s integration into Greenvolt. At the same time, SEAI grant continuity and the Clean Export Guarantee scheme keep the residential and farm segments accessible to smaller, locally focused installers, meaning the market is unlikely to consolidate as quickly as in some other European countries.

This list is an excerpt from our larger database of PV installers across Europe.