Climate Adaptation Scilly – Rainwater Harvesting Grants



The Council of the Isles of Scilly has received £250,000 of funding from the European Regional Development Fund to help businesses on the islands install rainwater harvesting systems. These systems will allow rainwater to be stored in tanks for non-potable uses such as toilets, washing machines, process water and irrigation. 

By harvesting rainwater in this way, the successful applicants can reduce the energy required for water treatment on the islands and reduce their own business costs. The climate of the Isles of Scilly is expected to get drier and warmer in future. Rainwater harvesting can help us adapt to these changes

What can it fund?

This fund will cover the costs for the design, specification, equipment, storage, delivery and installation of the systems for the successful businesses. The contracted supplier will work with each business to help define the modifications needed to their internal plumbing to use the harvested water for non-potable purposes.

This fund will not cover the costs of any internal plumbing that is needed to connect to the external rainwater harvesting system. It will be up to each business to secure the services of a plumber to carry out this work and pay for it. 


To qualify you must be:

  • a sole trader, or a registered company, or a payer of business rates


  • situated in and trading from the Isles of Scilly

The number of successful applications will depend on the level of interest as well as the requirements of each site. We will consider all of the following:

  • Volume of water used each year

  • Roof area available for rainwater harvesting

  • Space available for tank(s)

  • How the harvested water will be used

Once we have appointed a contractor, we will contact all applicants to get agreement to share the information provided with the contractor. We will then work with the contractor to determine which applications we are able to support from the fund.

How to apply

To apply please download the application form here and return it to

If you don’t have access to Excel, please contact us at the email address above.

Applications can also be submitted by post to: 

Climate Adaptation Scilly
Porthmellon Enterprise Centre
St Mary’s
Isles of Scilly
TR21 0JY

Application forms must be submitted by 5pm on Monday, 25 April 2022. We will confirm receipt of all applications received.

All applicants will receive confirmation in writing as to whether their application was successful.

All works must be completed by 23 December 2022.