Wakefield District Housing

Wakefield District Housing Association are committed to becoming a sustainable business. As part of this goal, they sought to install a solar PV system on their Merefield House offices in Castleford. They went to tender on the array in late 2017 and EvoEnergy were successful in their bid. After some careful site consumption analysis by EvoEnergy’s technical department, both sides agreed to install a larger 150 kWp PV system to optimise payback for the system and offset more carbon for WDH.

Black framed Trina panels were selected for their high efficiency and to minimise any glint and glare from the system. This was a planning stipulation, as the site is next to the M62 and can be visible from the road.

Roof access for the installation was agreed to be located at one end of the building and the site compound was located discretely around the back of the site to minimise any disruption. Any noisy works were scheduled outside office hours.

Working over a 2-week period, the array of 516 panels was installed in September & October 2018 with the installation team working hard to install a mixture of 290 & 295W Trina solar panels on roof pitch of 10 degrees. The installation was designed to incorporate Solaredge inverters and optimisers to increase the generation of the system and meet the safety requirements of the client.

To ensure that long-term maintenance and care of the system was as easy as possible, EvoEnergy installed a permanent CAT ladder and roof hatch, discretely located inside a newly built cupboard in the building. Panels were installed in conjunction with the existing mansafe system. Inverters were located in the external plant area to allow easy access for maintenance. Using Solaredge Power optimisation technology, the PV system was integrated into the fire alarm system. This means that, in the case of a fire, all AC energy would be turned off and DC electricity would be localised to the panels on the roof, reassuring those tackling the fire that they will be safe to do so without fear of electric shock. System monitoring is at a modular level, allowing visibility of any panel faults leading to lean system Operations and Maintenance.

Wakefield District Housing Association wanted to adopt a greener culture within the organisation. Installing a screen around the canteen demonstrating how much energy is being generated by the solar creates awareness of their clean energy consumption.

Now complete and commissioned, the system is generating over 109.2 MWh of clean energy every year. Over 30.9 tonnes of carbon emissions will be offset each year; equivalent to 33,807 pounds of coal burned.

Quick Stats

  • Location West Yorkshire
  • System Size 150.57 kWp
  • Panel model Trina
  • Inverter model Solaredge
  • Anuual output 109.2 MWh
  • Annual CO2 savings 30.9 tonnes