Croft Castle Biomass From Harvest to Heat Chatsworth House - 8 th July 2015 Presented by Ed Wood
Why Renewables? The national Trust looks after special places for ever and for everyone; from historic houses and gardens to beautiful countryside and coastline. We have a responsibility to sustain these special places for ever, requiring us to make long-term decisions that will protect them for future generations We recognise threat of climate change and pollution to our environment 2
Why Renewables? “Grow Your Own” Strategy approved by the Trustees Jan 2010 3
Why Renewables? • • Reduce the risk of climate change and the threat to our environment Remove the immediate environmental risk of oil use at our sites Reduce our exposure to fuel supply risk and volatile prices Save money that can contribute to our core purpose of Conservation How? • Increase Energy Efficiency: 20% reduction in energy use by 2020 • Use more Renewable Energy sources: 50% by 2020 • Renewable Energy Investment Programme 4
What Energy do we use in the Midlands? 5
Croft Castle and Parkland Croft Castle is a late seventeenth-century castellated manor house with fine Georgian interiors and a family connection dating back almost 1, 000 years. Set in 1, 700 acres of stunning Herefordshire countryside renowned for its veteran trees and Spanish chestnut Avenue. 6
What did we Install? 199 k. W HDG woodchip biomass boiler and heat main supplying conservation and comfort heating and hot water to: • Croft Castle • Garden Cottage (Holiday cottage) • Stable Cottage and Flat • Home Farm • Gardeners Office This also required a new boiler house with chip hopper and a new chip store including facilities to house the ranger team. • • Project initiated in March 2013 Business Case approval was given in July 2013 Implementation Approval was received February 2014 Build completed in September 2014 7
Feasibility • Heat assessment • Renewable options • Preferred solution • Financial modelling 8
The Biomass Project in Numbers • Supplies 75% of the heat required annually by Croft (200 MWh) from a renewable source • Saves 19, 500 litres of oil per year • 52 Tonnes of Co 2 saved per year • The total project cost around £ 445, 000. This included a significant amount of architectural, design and planning works to ensure a solution appropriate to the historic nature of the site. • The project will payback in 15 years and deliver a 5% return on investment. 9
Other Benefits • Removal of 6 oil tanks • Greater fuel security and resilience – self supply wood and remove price volatility of oil. • Increased benefit to managing woodland added value to existing wood stock • Improvements to tenanted farm yard and site storage/ranger facilities • Positive PR message of sustainability • Staff and volunteer engagement 10
Before…. 11
After…. 12
Wood Chip Supply The Biomass requires 100 tonnes per year (of chip wood) for boiler. This is to be sustainably sourced through wood thinning's, allowing improved growth and biodiversity in the woodland. Chip wood previously only had a value of around £ 5 per tonne to the property. Using this for heat adds value to the woodland removes external oil costs. Felling ≈ £ 19 per tonne Transport to Chip store ≈ £ 8 per tonne Chipping ≈ £ 10 per tonne Transport to Boiler ≈ £ 25 per month Total production cost ≈ £ 45 per tonne. Property buys HEAT from Countryside team (around 3 p per k. Wh = £ 98 per tonne) This encourages good fuel quality rather than quantity. Profit for the ranger team, but still cheaper than oil for the property team Everybody Wins! 13
The Build…. . Ø Ø Ø Ø Appointed Biomass Contractor Site works started Boiler House Construction complete Boiler installation First heat – Boiler commissioned Handover from contractor RHI application 16/05/2014 02/06/2014 11/07/2014 21/07/2014 18/08/2014 17/09/2014 19/09/2014 14
Boiler House Foundations 15
Boiler House Superstructure 16
Heat Main 17
Chip Store 18
Building Entry and Accumulators 19
Biomass Boiler in 20
Oil Boilers Out 21
Fuel Feed and First Fire 22
Results and Learnings • Project was successful - delivered on time, under budget, and to quality • Extensive work with stakeholders early in project paid off (planning, curators etc. ) • Rigorous tender process paid off in terms of contractor selection • Excellent service from Principle Contractor – Euroheat and their subcontractors (Efficient Energy Centre and CJ Bayliss • Devil is in the detail – Both in design and install • Taking time to do rigorous Feasibility, and Design and Plan was worth it. • Design and Build contract was effective, but did need a good level of ‘eyes and ears’ on the ground. • Wood chip supply and management was considered in detail and preparation started early to ensure quality • Select the right renewable technology in the right location • Operations need to be understood early and future owners identified 23
Run the Video…… 24
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