Sustain were brought into the project at short notice and quickly demonstrated the technical knowledge, organisation and professionalism required to deliver a complex installation within a live NHS hospital environment.

Julio Roldao

Senior Project Manager

King George Hospital

Watch interview

CBRE reached out to Sustain to design and install a Solar PV system across four buildings at King George Hospital

Tight deadlines, a heavy focus on safety due to the sensitive nature of the site, minimising disruption and a Lifetime savings of £4,155,207

£
4155207
Lifetime savings
775
kW
Installation size
135312
kg
CO2 offset yearly
1566
Panels installed
Client interview

Hear it from 

King George Hospital

themselves

We spoke with the client about their experience with Sustain Commercial Solar.

Key points:

CBRE worked in partnership with Sustain Commercial Solar on the delivery of the solar PV installation at King George Hospital.

The NHS Trust were extremely happy with the final outcome, and the quality of Sustain’s technical input, project management and overall delivery was excellent.

We would have no hesitation in recommending Sustain Commercial Solar and could not recommend them highly enough.

No items found.
Financial savings and earnings
1

Lifetime energy savings

£
4155207

British Pounds Sterling (£)

System cost

524004

British Pounds Sterling (£)

Estimated ROI

3.4

Years

Average savings per week

£

British Pounds Sterling (£)

Average savings per month

£

British Pounds Sterling (£)

Average savings per year

£

British Pounds Sterling (£)

Energy production and grid reliance
2

Annual energy generation

65362

kWh

Specific yield

843

kWh / kWp

Self sufficiency

%

Proportion of energy from solar

Energy production and grid reliance

Equivalent trees planted

Trees

Lifetime carbon offset

kg of carbon offset

Average carbon offset weekly

kg of carbon offset

Average carbon offset monthly

kg of carbon offset

Average carbon offset yearly

135312

kg of carbon offset

3
Sustain completed the project on time and within budget.

Julio Roldao

Senior Project Manager

System vitals

Live data

Performance ratio

98.2%

Actual vs expected production

Efficiency

99.8%

DC to AC conversion efficiency

Solar irradiance

12

W/m^2

Ambient temperature

19


System health

OK

All systems operational

4

The Challenge

CBRE reached out to Sustain to design and install a Solar PV system across four buildings at King George Hospital, with tight deadlines, a heavy focus on safety due to the sensitive nature of the site and minimising disruption.

The Solution

• Producing a detailed CAD design within 1 week of being appointed.
• Managing the DNO G99 Application on behalf of the client to obtain relevant permissions to install the proposed PV Array
• Generated optimal design proposals using the sites half hourly consumption data and provided for client review.
• 783 Solar Edge Optimizers & arcbox protection installed, to ensure maximum safety.
• The 775 kWp Solar PV system has a forecasted ROI of 3 years and 4 months
• Structural surveys undertaken and design modified to work within the constraints of the existing building structure.  Provision of 1566  – 495 Watt panels installed under Principal Contractor appointment.
• Safe access to the roof installed in the form of edge protection, Haki stair cases, and using a telehandler to get the panels onto the roof.
• Energisation achieved by connecting to a non-essential board, keeping disruption to a minimum.

Delivering a Greener NHS at King George Hospital

Helping the NHS achieve:

• Providing Clean, Renewable Energy Carbon Savings over 25 years:  3,429,650kg
• Achieving Net Zero Carbon by 2040
• Supporting the Trust’s Net Zero goal
• Generating Significant Cost Savings
• Predicted savings over 25 years: £4,115,207

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Table of contents

Article written by
Nick Elbourne
Chief Operating Officer
Nick Elbourne is the COO of Sustain Commercial Solar Ltd responsible for the operations within the company, ensuring that the solutions proposed and implemented to our clients are installed to the highest standards, safely and within an agreed timeframe.

Testimonials from

 

King George Hospital

Read the testimonials we received from the client.

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Name Surname

Position, Company name

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Name Surname

Position, Company name

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Sustain were brought into the project at short notice and quickly demonstrated the technical knowledge, organisation and professionalism required to deliver a complex installation within a live NHS hospital environment.

Julio Roldao

Senior Project Manager

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Financial model used

This client opted for

as their financial vehicle.

CAPEX
Upfront payment
Fastest ROI
Highest lifetime savings
Annual investment allowance tax break
CAPEX
Upfront payment
Fastest ROI
Highest lifetime savings
Annual investment allowance tax break
Hire purchase
Leasing options
No upfront cost
Annual bills reduced from day 1
Annual investment allowance tax break
Hire purchase
Leasing options
No upfront cost
Annual bills reduced from day 1
Annual investment allowance tax break
PPA
Power Purchase Agreement
No upfront or maintenance cost
Annual bills reduced from day 1
Minimal logistical involvement
PPA
Power Purchase Agreement
No upfront or maintenance cost
Annual bills reduced from day 1
Minimal logistical involvement

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