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Key Considerations for PV installations

for London Federation of Housing Coops

10. November 2012

104 London Street,

Reading,

RG1 4SJ

CONTENTS

1. Company Background

2. References / Past Projects

3. Considerations for Coop’s

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1.1 COMPANY BACKGROUND

Specialised solar photovoltaic (PV) installer and project developer based in north Germany, with subsequently opened international branches

Incorporated in 1996 in Germany, followed by Canada and more recently the UK and Denmark

125 people at our head office in Germany Completed ~ 1,500 solar installations worldwide (totalling

approximately 63MWp) 3

1.2 S.A.T. UK

UK branch incorporated in early 2011 in Reading, Berkshire Focused team effort to address public and council tenders with

focus on larger roof areas Latest addition is communal and larger solar park efforts on Recently completed several projects in UK:

30kWp Coop in Reading 12 kWp, 10kWp Schools in Wokingham and Winnersh 228kWp, Council building in Huntingdon

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2.1 ASBESTOS ROOF – ORTS ROAD

29.6kWp system mounted on tilted roofs Substantial asbestos-handling experience Housing estate in Reading Site works duration about 12 days 5

2.2 FLAT ROOF – BULMERSHE & FOREST SCHOOLS

Forest installed capacity – 11.97kWp Bulmershe installed capacity – 10.26kWp Significant H&S considerations – site works only on weekends

to prevent danger to children Project commissioned by Wokingham Borough Council

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2.3 INDUSTRIAL UNIT – EASTFIELD HOUSE

Installation size about 228kWp consisting of over 1000 x 195Wp Mono modules

Schueco mounting used for mildly pitched roof Huntingdonshire District Council system owner Physical installation spanning about 2 weeks 7

3.0 Considerations for Coops

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What are the key considerations for a coop? Planning Installation Commissioning Operation & Maintenance

3.1 Planning

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Full roof 372+384=756 panels

3.1 Planning

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Roof each edge minimum off 1m 372+384-28x2-13x2=654 panels

3.2 Installation

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Coop buildings tend to be older May have intricate structures on flat roofs & may

contain asbestos Several connection points

Full technical assessment for load bearing capacities

H&S regulations during installation crucial Wind and snow load calculation Grid connection and metering strategy (for larger

coops) + FIT Application date Installation size and FIT banding

3.3 Operation & Maintenance

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Solar panels require little maintenance If there are issues they arise mostly in the first year

Examples are: inverter failure generation display synchronisation G59 Unit in case of installations larger than 50 kWp

Routine checks like comparison of predicted vs real production