Shawfair Energy Centre & District Heating Network

Design and construction of a heat network for the Shawfair area in Midlothian, Scotland. The heat network development will consist of a connection to a local Energy from Waste Plant, the construction of an Energy Centre complete with back-up boiler plant, District Heating Networks (DHN) and heat substations.

Shawfair is a new mix use residential and commercial development in Midlothian, Scotland. A local Energy from Waste plant (EfW) has heat of up to 95°C available as a by-product of its operations for the development area.

This project aims to connect the EfW waste heat to the development and to create a sustainable District Heating Network for the wider Midlothian area.

The heat is to be transported from the EfW to an Energy Centre (EC), from where the heat disperses into a District Heating Network (DHN). The capacity of the DHN will be about 16.5MW. The DHN will connect to both residential units and mixed use space including office, retail and community space.

When heat from the EfW is not available, it must be created at the EC. The EC will be fitted with boilers, thermal stores and other general equipment required for DHN operation, such as pressure keeping, and water quality control. It will also house the control system of the entire network.

Steel based district heating pipes will form the primary network that feeds the warm water to Heat Substations, where the water is hydraulically separated from secondary networks. The Secondary Off Plot networks will be polymer based district heating networks that transport warm water to the boundary of development plots.

NOTE : All Secondary On Plot DHN Networks are for the plot developer to coordinate the connection to all dwellings including the interfaces with the dwellings. This does not form part of this scope.

The build programme for the works included in this contract notice will be approximately 24 months.

The project is new build.

It is anticipated that the contract scope shall include (but is not limited to) design and build of:

• Pipework and connections to EfW heat offtake system
• Energy Centre
• Electrical installation, instrumentation and controls
• Primary DHN Spine
• Initial Heat Sub Stations across wider plot development area
• Initial Off Plot Secondary district heating pipework

The contract will contain options for MEL to instruct the successful contractor to price and carry out the design and build of network extensions to new customers beyond the initial scope listed.

MEL reserves the right to benchmark the price of any additional works under a separate contract notice and potentially award those works to others.