CONTRACT NOTICE – NATIONAL

1 Authority Details

1.1

Authority Name and Address

1.2

Address from which documentation may be obtained

1.3

Completed documents must be returned to:

2 Contract Details

2.1

Title

Y Twyni PV and Battery Installation Works

2.2

Description of the goods or services required

Swansea UNI/Active Building awarded GES to carry out tender works on a R & D

project encompassing a commercial rooftop solar PV scheme, a carport solar PV

scheme, a Battery Energy Storage System (BESS) and EV car chargers located at the

Swansea University Bay Campus. The objective of the proposed scheme is to enhance

the sustainability of the buildings reducing the building dependence on expensive and

less carbon efficient fossil fuel derived energy imported from the national grid and

determine the best control schema between each of the elements to optimise the PV

generated green energy best. A bespoke control system (Schneider Microgrid

Controller) will control the distribution of PV generated power between the BESS,

School Of Management (SOM) Building and EV chargers.

The Y Twyni building is located centrally on the Bay Campus, Swansea and is adjacent

to the School of Management (SOM).

The Y Twyni will be the platform to locate the rooftop PV system, however, the PV

generated energy will not supply the Y Twyni directly, a Distribution Board panel at the

Y Twyni building will connect and route PV power to the SOM building via the BESS

system. The BESS system will be connected to the SOM and EV chargers, the control of

the power from the BESS will be via the schneider control system (location in comms

room in the School of Management Building).

A zero MEC G99 grid connection will be required as a regulatory requirement for

behind the meter generation. The zero MEC will be associated with the SOM MPRN (LV

connection). The Contractor shall install a G99 Protection Relay and a G100 Export

Limiting Device (ELD) in Control Panels at an appropriate location.

Charge and discharge cycles of the BESS will be determined from the EV demand and

also the capacity of the BESS.

The following is the control order for the PV generated power from the Y Twyni PV roof,

the carport PV and the BESS system.

Battery Energy Storage System Order of Distribution (where does power go priority)

1. EV Chargers

2. SOM

The control of above will be by the Schneider Microgrid Controller.

The proposed Single Line Diagram is included in Appendix G.

The project is planning exempt for the commercial rooftop solar scheme.

NOTE: The authority is using eTenderwales to carry out this procurement process. To obtain further information record your interest on Sell2Wales at https://www.sell2wales.gov.wales/search/search_switch.aspx?ID=110260

2.3

Notice Coding and Classification

2.4

Total quantity or scope of tender

3 Conditions for Participation

3.1

Minimum standards and qualification required

4 Administrative Information

4.1

Type of Procedure

Single stage

4.2

Reference number attributed to the notice by the contracting authority

SU175(21)

4.3

Time Limits

4.5

Language or languages in which tenders or requests to participate can be drawn up

4.6

Tender Submission Postbox

5 Other Information

5.1

Additional Information

Further information is available with the tender documents.

(WA Ref:110260)

5.2

Additional Documentation

5.3

Publication date of this notice