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

Solar PV and Battery Storage at Afon Taff School, Merthyr Vale

2.2

Description of the goods or services required

Project to retro fit a Solar PV and energy storage system to Afon Taff School in Merthyr tydfil.

Afon Taf High School, Yew Street, Troedyrhiw, Merthyr Tydfil. CF48 4ED

Background

The school has recently been refurbished, part of this process was the fitting of Alumasc Mastergold warm roofing system (membrane) to the buildings flat rooves, this is subject to a 25year guarantee.

Renewable energy system requirements:

Panel mounting

The new guaranteed Roof membrane means that a nonpenetrative ballasted solar panel mounting system must be used and this should include membrane compatible protection at all contact points with the roof and additionally a non-combustible layer is required between the array and roof surface (between the frames and under the panels – 20-40mm washed pebble blast or similar performing inorganic layer).

Pre-construction, but post tender the appointed installation contractor will carry out a detailed structural survey for the system they intend to install, this will be used to confirm the structure is suitable for the installation and the cost should be included in the tender.

Panels & PV system

The Solar PV system should be 200 Kwp.

The Panels must be ethically sourced from manufactures free from forced labour issues and ideally tier one Bloomberg classified.

The panels should be IP68 rated and have a 12 year plus product warranty and a 25-year performance warranty on 84% of nominal power. The solar

installation should include a 2-year workmanship warranty.

The array will be subjected to DNO approval for its connection to the grid. Bidding contractors should allow for the cost to submit a G99 application to the DNO on behalf of the council for this purpose.

The installation should include OFGEM approved generation meter and provision for an export meter.

The system should include a monitoring system detailing the solar generation, the export along with the energy stored and used from the battery array.

The design and installation will comply with the following:

Latest UK Building Regulations

Latest European and UK standards and codes of practice

Latest industry recognised guidelines, including:

o Engineering Recommendations G99

o BS 7671 (current edition) - Requirements for electrical installations (all parts, but in particular Part 7-712 Requirements for special installations or locations – Solar photovoltaic (PV) power supply systems)

o BS EN 62446 (current edition) - Grid connected photovoltaic systems – Minimum requirements for system documentation, commissioning tests and inspection

o IEC 60364 Low Voltage Electric Installations

o IEC 60755 General requirements for residual current operated protective devices

o EC 61215 Crystalline modules

o IEC 61730 - Photovoltaic (PV) module safety qualification

o IEC 61557 Electrical safety in low voltage distribution system

operating manuals for the system must be provided

A fire isolation switch should be located externally to each building where PV panels are installed.

The proposal must include structural engineering verification that the roof structure is suitable for Solar PV.

Safe access for maintenance of the system must be considered in the proposal and the PV array must be designed with a minimum edge gap of 1.2M to the perimeter of the roof.

Battery storage system

The system should include a 44kWh battery capable of 90% depth of discharge, 97% charging efficiency and a 10 year warranty – the battery must be located in dedicated, suitable containment exterior to the main buildings that is sterile and fire resistant. Measures must be taken to ensure the battery cannot operate and temperatures that could be detrimental to its life or performance.

Provision of a visual performance interface

A user / pupil interface should be included with the system to display the system performance and benefits – a creative proposal for this interface rather than a dull display will be looked on favourably.

NOTE: To register your interest in this notice and obtain any additional information please visit the Sell2Wales Web Site at https://www.sell2wales.gov.wales/Search/Search_Switch.aspx?ID=126505.

2.3

Notice Coding and Classification

2.4

Total quantity or scope of tender

200KWp of Solar PV

44 KWhr Battery Storage

3 Conditions for Participation

3.1

Minimum standards and qualification required

System must be MCS accredited and installer must provide all documentation facilitate export of electricity to the grid.

4 Administrative Information

4.1

Type of Procedure

Single stage

4.2

Reference number attributed to the notice by the contracting authority

N/a

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

see detailed specification

(WA Ref:126505)

Under the terms of this contract the successful supplier(s) will be required to deliver Community Benefits in support of the authority’s economic and social objectives. Accordingly, contract performance conditions may relate in particular to social and environmental considerations. The Community Benefits included in this contract are:

The system should provide a significant community benefit to the school and local community within Merthyr Vale by reducing both the energy costs and carbon footprint of the school and contribute to cleaner air quality around the school.

Relates to the following project/programme financed by EU Community Funds: AMMV Energy Worx 82237

The buyer considers that this contract is suitable for consortia bidding.

5.2

Additional Documentation

5.3

Publication date of this notice