Costain Speedy Case Study Breakdown

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Costain Speedy Case Study Breakdown

Working

Method 1

⁠

Energy from HVO

Litres of HVO consumed:

67340

⁠

litres per year

kWh per litre HVO consumed:

0.8008

⁠

kWh per litre

Total Site Energy Consumption Per Year:

53,926

⁠

kWh per year

Cost of the HVO per litre: £

1.84

⁠

Cost of HVO fuel per kWh: £

2.297702297702298

⁠

per kWh

Cost of HVO Solution (all costs combined) per kWh: £

£2.53

⁠

Energy from Solar

Number Solar Panels

25

⁠

Each Solar Panel is a set of four, estimated to be rated at

1,320

⁠

Watt

Total Generation Capacity:

33

⁠

Yearly Generation Capacity per kW based on irradiation data for Colchester:

1,015

⁠

kWh / kW installed / year

Colchester is on A12 route. Irradiation data source:

Global Solar Atlas⁠

⁠

Total Yearly Generation Capacity for this system:

33,495

⁠

kWh

Missing Energy Delivered by Hydrogen

Missing Energy after solar system generation is taken off site consumption:

20,431

⁠

kWh

NB: This is only theoretically the case if all solar can be consumed when it is being generated, or if the inverter includes a battery to store excess solar energy.

Cost of hydrogen

Stated annual hydrogen fuel cost:

£38,250.16

⁠

Calculated Hydrogen cost per kWh:

£1.87

⁠

Calculated Hydrogen total cost per kWh (including generator):

£2.55

⁠

Calculated Hydrogen fuel cost per kg:

£28.27

⁠

Calculated kg Hydrogen required per year:

1353

⁠

Cost of solar

Total cost of solar system (distribution board, solar panels, inverter):

£77,507

⁠

Total cost per kWh for solar generated:

£2

⁠

per kWh

Costs of different setups

Stated Costs of HVO

Stated Costs of HVO

Cost Type

Total Annual Cost

Number of Units

Cost Per Unit

60kVA Generator Hire

£4,084.00

AutoMate Rental

£8,736.00

HVO Fuel

£122,558.80

67340

£1.82

Fuel Tank

£921.96

There are no rows in this table

£136,300.76

Sum

⁠

Total Cost of HVO:

£136,300.76

⁠

Stated Costs of Solar & Hydrogen

Stated Costs of Solar & Hydrogen

Cost Type

Total Annual Cost

Divisible By Units

Cost Per Unit

Distribution Board

£3,840.00

Solar Panels

£50,557.00

£2,022.28

Inverter

£23,110.00

Hydrogen Fuel

£38,250.16

Hydrogen Generator

£13,809.12

There are no rows in this table

£129,566.28

Sum

⁠

Total Cost of Solar & Hydrogen:

£129,566.28

⁠

Method 2

⁠

Amount of hydrogen consumed

The usable hydrogen in 1 MCP from BOC is around

9

⁠

kg. Total hydrogen per year is

468

⁠

kg hydrogen.

Energy from hydrogen

One Kg of hydrogen through averagely running generator is

16

⁠

kWh.

With site energy usage at around

7,488

⁠

kWh.

Cost of hydrogen

Rental of two MCP packs per month for the year is £

£6,240

⁠

(there are only ever two packs on site)

Hydrogen fuel would cost £

£23,946

⁠

for the year.

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