V-FAST consortium plans to build and operate Scotland's first low carbon, energy efficient, soil-free vertical farms in the central belt
A consortium of British companies have earmarked a series of sites between Dumbarton and Dundee for the locations of Scotland’s next generation of hectare+ scale vertical farms, powered by 100% Scottish renewables. These farms would provide locally produced fresh foods (salads and fruits) to over 60% of the Scottish population.
The vertical farms will help meet the Scottish Government’s ambitions to produce more homegrown fruit and vegetables. Each vertical farm would be powered by locally produced renewable energy.
Next generation vertical farms use advanced soil-free growing techniques and stack crops in specially designed beds and trays. They minimise water, fertiliser and pesticide use which is highly beneficial to the environment and make use of artificial lighting and climate control to get the desired results.
The V-FAST consortium comprises UK Urban AgriTech (UKUAT), Vertegrow Ltd, Light Science Technologies Ltd, RheEnergise Limited, the James Hutton Institute, LettUs Grow Ltd, IGS Limited, and Sprung Structures Ltd (through a UK supplier).
The partner companies have signed a collaboration agreement to explore the potential to identify and then construct joint projects which combine vertical farming, renewable energy generation and High-Density Hydro® energy storage. V-FAST stands for Vertical Farms and Storage Technologies.
Each new V-FAST vertical farm would provide high quality food at a lower cost than can be achieved by a typical indoor farm drawing energy from the local grid.
The V-FAST consortium has identified the line of low hills from Dumbarton to Dundee (Campsies, Ochils and Sidlaws) as ideal for their projects. One hectare scale vertical farm can provide premium fresh produce for a year for a town of 10,000 homes and one RheEnergise project can provide the energy storage needs for a town of the same size.
Each site would host wind, solar, energy storage and vertical farming all in one place, often utilising exactly the same footprint to maximise the efficiency of land use. Furthermore, the V-FAST projects can utilise lower quality land which is not ideal for traditional farming.
The principal challenge vertical farms face, to fulfil their ambition of supplying high quality foods to local markets, is the cost of energy, a problem made far worse in recent months. 24/7 renewable energy is the solution to the problem but as the wind does not always blow and the sun does not always shine, Long-duration energy storage (LDES) provides the answer.
LDES offers reliable and low-cost energy that is needed by vertical farming companies. Renewable energy generation is already low cost, but intermittent. To solve this problem vertical farms need a long duration energy storage solution of 8-12 hours to ensure near constant low cost carbon free energy. 8-12 hours, however, is longer than batteries can economically provide.
RheEnergise’s High Density Hydro® storage system would be built to provide the necessary grid stability and reliability, utilising the abundant existing local renewable generation (which is often curtailed) across many parts of Scotland, whilst the predictable base energy demand of a vertical farm (with its controlled environment agriculture) would be provided by one or several members of UKUAT’s membership network.
Food production and energy are inextricably linked, with both industries striving to rapidly decarbonise and meet environmental goals. The consortium offers a home-grown solution, utilising the very latest innovations to maximise food production at the lowest cost. The advantage of storage collocated with a vertical farm are multiple: we use the same footprint, where the farm takes the upper levels and we utilise the basement; we use the same grid connection, often a significant cost for farming and storage; the energy storage solution can provide additional local energy services to local consumers, enabling them to benefit from lower energy costs too.
“Energy and labour are the two biggest operational costs for any vertical farm. V-FAST can reduce the cost of energy and so would go a long way towards enabling vertical farms to offer affordable and competitively priced produce. Vertegrow considers sustainable and carbon neutral growing to be of key importance when replacing imported crops, and V-FAST will play a large part in these ambitions.”
Graeme Warren, CEO of Vertgrow
"As land becomes scarcer and electricity and gas prices are soaring, we urgently need to find alternative farming methods to ensure food security in a more sustainable, energy-efficient way.
This collaboration presents a unique opportunity to revolutionise the food system in Scotland and to enable the year-round supply of fresh, flavoursome produce with less food miles and a reduced carbon footprint, thereby reducing the UK's reliance on overseas exports."
Simon Deacon, CEO and Founder of Light Science Technologies
Energy use and efficiency is recognised and much discussed across the entire industry, as a critical challenge that must be addressed. This project will make a major contribution to doing just that.
“Renewables plus High-Density Hydro can not only provide stable low-cost power to the vertical farms, but also extend these very same benefits to consumers, industry and businesses across the entire Scottish central belt.
Our consortium approach means that supply-chains are shortened, resilience is increased, substantial environmental benefits are realised, jobs are created, and wealth is retained locally. And each project means a reliable, local supply of fresh food and carbon-free energy which serves local communities and will support the Scottish Government’s ambitions to integrate controlled environment agriculture with renewable energy.”
Stephen Crosher, CEO of RheEnergise
Subject to detailed site investigations, planning and financing, the first V-FAST project (estimated combined cost £28m) could be completed by 2025 including 10,000 m³ of vertical farming floor area and 80 MWh of energy storage, producing 20 to 30 times the food production as could be grown on an open field of the same size.
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