Category Archives for "Case Studies"

Biomass boilers successfully commissioned at Sidcot School

Sidcot School is on track to make huge energy savings by converting inefficient oil boilers, supplying space heating and hot water, to Hargassner biomass boilers. Leading Energy acted as energy consultants to the school starting with a broad energy audit to look at energy savings opportunities across the site. The oil boilers were at the end of their life and considered to be a risk to the heating reliability of the school which dictated the priority this project had over other renewables.

The oil consumption at the school on the main building was around 748,500 kWh per year or 72,600 litres of oil.

Previous CO2 emissions were around 185 tonnes of CO2/year. Expected savings should be around 167 tonnes/CO2/year.

Leading Energy managed the tender process and guided the school through the selection process: the tenders varied hugely in price and also in boiler sizing indicating the difficulty of approaching these types of projects without good technical support. Wood Energy were the successful contractor working with their specialist installer Aston Cord Services. Simon Hayes, Aston Cord director noted that “the project was challenging because we set the target of integrating the system into the fabric of the school and had to design out noise to the boarding school area”. The system also included a conversion to gas which the school believed would be too costly and difficult- we extended the gas main and installed gas back-up boilers for peak load conditions thus reducing the CO2 footprint further.

Penderyn Distillery – Energy Auditing

unlagged steam pipe

unlagged steam pipe

Penderyn Distillery is a boutique Welsh whisky of distinction produced in the heart of the Brecons. The distillery is seeking to reduce its carbon footprint further, having already installed a 50kWp PV system.

Leading Energy has worked closely with the plant manager to identify potential savings in the lighting system, process heat losses, drives, fans and compressors. The plant manager also wishes to improve the ventilation system and optimise waste processing from the plant. Leading Energy is supporting project development of solutions in these areas as a follow up to the initial audit.

Penderyn are looking to invest in a LED lighting project to make significant energy savings in the distillery and warehousing facility. Leading Energy has managed the tender process on behalf of the client and helped to define the plant requirements with the plant operation team.


Millfield School


Review of School’s renewable energy strategy with recommendations to reduce energy use and maximise returns from installations.

  • Client: Millfield School
  • Key suppliers: Energy Gain UK
  • Completion Date: 2012/2013

Leading Energy led the evaluation process with this client to ensure best value for CO2 reductions and capital expenditure.

Sudden cutting of the government’s Feed-in Tariff rates meant a rapid response from the project team. The PV array also creates a high visual impact raising the profile of renewable energy systems on the site and complements the building’s organic design.

The design complements the organic shape of the building, which has a prominent position on the site with the roof being visible from the sports field. A large panel inside the dining room displays the instantaneous and cumulative kWh generated.

The architects DKA led by David Kent evaluated shading and PV layout. They designed the original banana shaped building which was built to avoid felling the Wellingtonia tree. The tree is now of considerable size and it was decided to design the PV system to avoid the shading of the tree rather than fell the tree which has become part of the landscape; a difficult dilemma, as always, when balancing ecological decisions with carbon reduction projects. DKA have designed a number of exemplar education buildings.

The tender was won by Energy Gain UK who specified Pangea Gallium enriched monocrystalline panels to offer higher performance after 25 years.

Sidcot School – Conversion of oil to biomass

Sidcot School has made huge savings in CO2 emissions by converting inefficient oil boilers, supplying space heating and hot water, to Hargassner biomass boilers.

The oil consumption at the school on the main building was around 748,500 kWh per year or 72,600 litres of oil.

The decision to convert the oil boilers to biomass with gas back-up is based on reducing the CO2 emissions of the school by using biomass fuel which can save 93% of emissions by oil heating or up to 97.5% if low carbon footprint pellets are sourced saving around 167 tonnes CO2/year.

Leading Energy has helped Sidcot manage this conversion by using existing building space integrated into the main school and avoiding any additional outside plant rooms with the removal of the oil tanks allowing a better view of the frontage of this listed building. The contractors Aston Cord have worked at speed with the boiler supplier Wood Energy to ensure the RHI rate was captured prior to the July 15 degression.