SEAI   Deep Retrofit Pilot Programme

significant upgrade of a building toward nearly zero energy requirements where it is practically feasible and achievable.

minimum BER A3 and a minimum Building Energy Rating (BER) uplift of 150 kWh/m2/yr.

SEAI Awards 2020

SSE Airtricity won the Energy in Buildings category at the Sustainable Energy Authority of Ireland (SEAI) 2020 Awards for their deep retrofit refurbishment works of Dún Laoghaire-Rathdown County Council’s Moyola Court, Churchtown. The houses were built in the 1970’s and before their upgrade were in poor condition. Supported under the SEAI Deep Retrofit programme, the installation of innovative heating technologies, advanced insulation, heat pumps, renewable generation and battery storage resulted in these inefficient units becoming some of the most efficient and comfortable in the country. The houses were upgraded using Passive House retrofit principles and the BER ratings improved from G to A3 which had a hugely positive impact on the residents.

The Site was upgraded in two phases:

Phase 1: Block 1 comprising 8 houses

Phase 2: Block 2 comprising 4 houses and siteworks


Built during the early 1970’s

Ground Floor poured concrete slab with no insulation

First Floor Precast hollow core slab

Roof Precast slabs with mineral wool insulation

External Walls Uninsulated concrete block cavity walls with brick facing to front elevation

Individual gas boilers

12 No.1970’s terraced houses all with poor BER ratings from E to G


Energy retrofit measures brought the houses to A2 and A3

External wall insulation

New triple glazed windows and doors

Roof insulation 

Block 1 - Mechanical heat recovery ventilation with heat pump

Block 2 - Photovoltaic solar panels, battery with   smart inverter, electric heat panels and   hot water cylinder with heat recovery