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Case Studies

Case studies
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Case Studies

As specialists in supplying renewable energies to the commercial sector, here at Land Energy we have worked on a comprehensive range of projects over the years.

Take a look at our case studies to view some of our most recent work and see first-hand the high standard we are committed to delivering.

Goatacre Care Home

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  • Customer: Goatacre Care Home
  • Installation hardware: ETA Hack 199 wood pellet
  • Industry & application: Residential care home
  • Installation date & lead time: March 2015 (4 weeks)
  • Projected lifecycle cost-savings: 10-15%
  • Projected CO2 savings, per annum: 120 tonnes
  • Average wood pellet consumption, t per annum: 100 tonnes
  • Fossil fuel displaced, Litres per annum: 40,000L of heating oil
  • Lifetime RHI: £0.45M

Land Energy, in partnership with Vesta, has installed a new 199 kW wood pellet biomass boiler for a Wiltshire-based care home, which is home to fifty elderly residents. The installation of this ultra modern, sustainable heating system that supplies both heat and hot water, is one of the fastest hook-ups either company has recorded; it was completed and handed over in just four weeks. The bonus for the care home was that due to the financing package that was used to finance the installation, it didn’t cost them a penny and going forward they will only pay for the heat they use.

Careful planning was the key that enabled the installation to be completed in such a short space of time. A site was identified in the grounds of the home, levelled and prepared to take the purpose-built container which housed the entire boiler system in one self-contained unit. The container was fitted-out off site, which meant that time and disruption on site were minimised, allowing the care home to operate with minimal daily disruption.

Before the unit arrived, pipes and electricity were laid from the site to the existing plumbing system in the home. With the foundations and pipework laid the unit, which essentially resembles an upmarket cargo container, was lowered into place by crane and hooked up within a day; ensuring the home was not without heat and hot water for more than 3 hours.

It was important that the fully integrated plant room and woodstore blended seamlessly with the grade II listed building, and this was achived through the use of timber cladding. The existing LPG system was left in situ to provide heat and hot water in an emergency.

The Vesta deal proved ideal for the home which was due to replace its existing heating system at huge expense. However, the Vesta arrangement means the home paid nothing for the boiler and installation, it’s only paying for the heat it uses – and that’s 10%-15% less than before.

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Lodge Farm

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  • Customer: Hook 2 Sisters limited (H2S)
  • Installation hardware: 975 kW
  • Industry & application: Agriculture – Poultry sheds
  • Installation date & lead time: 5 months from signature to heat on site
  • Projected lifecycle cost-savings: 15-20%
  • Projected CO2 savings, per annum: Projected CO2 savings, per annum 575 tonnes equivalent to an 80% reduction on previous year.
  • Average wood pellet consumption, t per annum: 800 Tonnes /pa
  • Fossil fuel displaced, Litres per annum: 475,000 to 500,000 litres of LPG

Hook 2 Sisters Limited (H2S) is a joint venture between PD Hook, the largest poultry supplier in the UK, and 2Sisters Food Group, a large diversified food company. Established in 2006, H2S has operations all across the UK and sources its chickens from self-managed farms and a network of contract growers. H2S has grown substantially over recent years, supplying major retail chains such as M&S, Tesco & Sainsburys. Its success can be primarily attributed to the strong control on input costs, close monitoring of crop yields and knowledge of the market place.

Over recent years, H2S has seen a dramatic shift in its customer and end consumers’ expectations, demanding more sustainably produced chicken. Major retailers, such as M&S, had already taken several initiatives to reduce carbon emissions across its supply chain but was still looking for its suppliers to reduce their carbon footprint. H2S started to investigate different ways of lowering carbon emissions in a cost effective manner, while still meeting the high standards of the retailers.

Before H2S would consider any fundamental changes to its production systems, the management team wanted assurances that any new technology had a proven track record and that the economics of the system would maintain their competitive advantage within the market. Failure of either the system to work or the economics to add up, could result in H2S not only losing stock but ultimately defaulting on their supply contracts.

The solution came from Land-Energy, in the form of a fully outsourced, low carbon, heating system. Land-Energy provided all the equipment required to switch to a wood pellet heating system on a trial site; this allowed H2S to see the reliability of the installation and to understand how the system performed, without any capital outlay. Additional benefits were also seen in the health and wellbeing of the birds; one of the benefits of using a dry heat was the reduced moisture content and noxious gases in the sheds which lead to a reduction in the mortality rate.

The system itself comprised a 975 kW wood pellet boiler housed in a containerised boiler room (the energy centre) which provided hot water through a distribution system to the eight sheds measuring in total 19,200 m2. The hot water was distributed throughout the sheds by insulated pipework maintaining the water at 85 oC, which was enough to keep the chickens warm and to dry the bedding litter. The hot water passed through a series of fan assisted convection heating units (four per shed, 32 in total) which provided the required heat capacity.

To optimise the growth of the chickens, the shed’s temperature was strictly monitored and maintained. Air was drawn from the upper part of the shed and expelled horizontally by the heating unit fans, ensuring an even heat distribution over the shed floor.

The installation schedule was planned around the production cycles to avoid any disruption to the farmer’s poultry operations. Although the installation involved working both inside and outside the sheds, the project was efficiently managed such that the short time window between production cycles was fully utilised. The wood pellet boiler system was commissioned and fully operational with the sheds receiving renewable heat within five months of signing the contract.

The system is regularly cleaned and undergoes general maintenance at regular intervals that coincide with the poultry operation. The associated energy centre is designed to store enough wood pellets to supply heat for at least two weeks from the start of a winter intake of chicks. The level of wood pellets are monitored remotely and deliveries are made by blower trucks from a nearby distribution hub in Retford, Nottinghamshire.

The biomass boiler replaces more than 90% of the LPG used on the farm and delivers on average about 2,600 MWh of heat per annum. This equates to CO2 savings of 575 tonnes, almost an 80% reduction in annual CO2 emissions.

In order to ensure that welfare and performance levels of the farm were maintained if not improved the first couple of crops of chickens were monitored using industry standard KPI’s. The results for weight for age showed an increase of 5% and 6% in the respectively crops, hock burn showed a dramatic decrease of between 8-19% in the two crops therefore improving chicken welfare standards. The full table of results are available upon request.

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Moy Park - Agricultural

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  • Customer: Moy Park
  • Installation hardware: 86 x 199kW packaged wood pellet boiler and 172 x 100kW LPG back up units
  • Industry & application: Poultry farming. Heating to poultry sheds; LPG replacement
  • Installation date & lead time: Rollout Nov 2014 – June 2015; 6 months
  • Projected lifecycle cost-savings: 15-20%
  • Projected CO2 savings, per annum: 5,340tCo2
  • Average wood pellet consumption, t per annum: 6,125
  • Fossil fuel displaced, Litres per annum: 3,945,000

Moy Park’s goals were three-fold; first they needed to implement a strategy that would significantly reduce their CO2 emissions, in order to meet their customers’ environmental standards and carbon footprint requirements. Second, they wished to bring some long term stability to the business by alleviating the uncertainty of energy price fluctuations and third they did not wish to incur capital costs.

The solution came from Land Energy who provided a turnkey ESCO solution including all the hardware, O&M and wood pellet supply on a 20 year contract. This reduced Moy Park’s reliance on fossil fuels, reducing their carbon footprint. It also delivered fuel price foresight and stability in the form of a 20 year wood pellet contact, along with no capital cost and minimal disruption to production.

The system that Land Energy deployed was a single containerised 199 kW boiler per poultry house, which closely matched the existing energy profile using LPG, a buffer tank and 2 x 100 kW LPG back up boilers for use in the event of a system failure.

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R G Walter & Son - Horticultrual

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  • Customer: R G Walter & Son
  • Installation hardware: 2 x 990kW multi fuel boilers
  • Industry & application: Horticulture. Heating to a 4 acres of green houses
  • Installation date & lead time: Rollout 01/11/2014; 4 months
  • Projected lifecycle cost-savings: 15-20%
  • Projected CO2 savings, per annum: 1,100 tonnes
  • Average wood pellet consumption, t per annum: 1,000
  • Fossil fuel displaced, Litres per annum: 390,000 litres of processed fuel oil (PFO)

The horticultural industry relies on maintaining optimum growing conditions in order to produce high quality crops. A large part of the operating costs are made up of heating bills, so finding the most efficient and reliable system is very important in the long term management of the business. As fossil fuel costs continue to rise in the long term, businesses such as R G Walter & Son are looking at the alternatives with the aim of reducing their annual energy costs.

Having identified greenhouse heating costs as having the most potential for significant savings, R G Walter & Son approached the renewable energy sector with a view to replacing the exisiting heating system with a more cost effective solution. Land Energy was able to provide a complete assessment of the heating requirements and suggest an alternative system that could be installed with minimal disruption to the productivity of the business.

With four acres of greenhouses to heat, the proposed system consisted of two 990 kW multi fuel boilers that would be continuously fed by two 25 tonne wood pellet storage silos. The containerised design of the boilers simplifies the installation processs and reduces the overall project time to a minimum.

The new system was designed to be fully integrated with the existing control circuits with the potential to use remote monitoring, which allows alerts to be sent to a selected number of mobile phones.

Based on energy consumption figures from the original installation and the projected costs for the new heating system, the cost savings for the life of the installation are expected to be between 15% and 20%.

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Raven Hall Hotel

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  • Customer: Raven Hall Hotel
  • Installation hardware: 1 x 199KW Packaged wood pellet boiler
  • Industry & application: Hotel. Heating 52 bedrooms and supplying hot water
  • Installation date & lead time: Rollout 28/03/2014; 2 months
  • Projected lifecycle cost-savings: 25-30%
  • Projected CO2 savings, per annum: 240 tonnes
  • Average wood pellet consumption, t per annum: 160 tonnes pa
  • Fossil fuel displaced, Litres per annum: 84,000 litres of heating oil

Raven Hall Hotel were conscious of their environmental impact; realising that maintaining their guests comfort was costing the earth, with their annually heating oil usage totalling £50,000 a year. The hotel reviewed the options that they had available to them to reduce their fuel bills, while maintaining a comfortable living environment for their guests including the ability to provide a plentiful supply of hot water at peak demand times.

The solution came from Land Energy who provided a fully-packaged, containerised solution that was quickly and easily installed with minimal disruption to the everyday running of the hotel. To maintain aesthetics on site, the wood pellets were stored in an integral store room in the container and not in a conspicuous metal silo.

The 199kW wood pellet system was designed to supply the hotel’s heat and water demand the majority of the time. The existing oil heating system was integrated with the wood pellet heating system in such a way that it could be used for back up in an emergency.

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