Enso Energy, through its subsidiary company Elstree Green Limited, is proposing to develop a solar farm and battery storage facility on land to the North East and West of Elstree Aerodrome.

Projects  > Hilfield

The generating station would have an export capacity of up to 49.9MW for distribution to the national grid. This is equivalent to the annual electrical needs of approximately 16,000 family homes across the district of Hertsmere. The anticipated CO2 displacement is around 25,000 tonnes per annum compared to conventional fossil fuel energy generation, which represents an emission saving equivalent of a reduction in 8,000 cars on the road every year.

The integrated battery storage system will supply electricity to the local electricity network at times of peak energy demand and help make the renewable energy output of the solar farm a secure and reliable part of the UK energy supply.


homes powered per year (equivalent)


tonnes of CO2 displaced per annum


We held an online public consultation webinar and Q&A session event on Thursday 1st October 2020. The webinar included a ten-minute presentation by the project team where they outlined the draft proposals. During the Q&A session which followed the webinar attendees had the opportunity to ask questions about the draft proposals – the webinar is available to watch by clicking the video below.

Where is Hilfield Solar Farm

Evolving concept design

Evolving concept design of Hilfield Solar Farm

What are the features and benefits of the solar farm and battery storage facility?

The main benefits of the development proposed are summarised below:

  • The project will assist in meeting Hertsmere Borough Councils goal to reduce greenhouse gas emissions in line with local, national and international targets and its declared Climate Emergency
  • Contribute towards the security of energy supply in Hertsmere through the provision of local, competitive renewable energy supply.
  • We estimate the solar farm will increase the total amount of renewable electricity generated in Hertsmere from 5.4% to 20% bringing Hertsmere closer to the national average of 33% electricity generated from renewable sources.
  • The project will support the UK’s urgent need to transition to a low carbon future, producing significant amounts of renewable energy.
  • The proposed site is well contained. Due to the topography and screening from the existing hedgerows/trees and built environment the visual impact of the solar farm is low.
  • The proposed development will utilise bifacial modules which absorb irradiation from the front and rear side, generating c. 4% higher energy yield than mono-facial solar panels..
  • This is a temporary development. A solar plant allows agricultural land to rest for the period of operation and the land use can easily be reversed to agriculture at the end of the project life.
  • Compared to intensive arable farming, a solar farm gives land the opportunity for multiple uses. In addition to energy production, solar farms can support biodiversity net gain by allowing small animals access to otherwise fenced-off land, with bird and insect fodder plants and wildflowers sown around the modules (visit www.solar-trade.org. uk/solar-farms).
  • No protected landscape, heritage or ecological designations will be affected by the solar farm. No footpaths will be stopped up or diverted during either the construction or operation of the solar farm.
  • The proposed scheme is temporary and fully reversible, returning the site to agricultural use at the end of its operational lifetime and therefore will not become brownfield land.
  • We anticipate that construction will be complete in approximately 7 months. This will typically require 8 HGV deliveries to the site each day, which will not be routed through local villages.
  • The proposed solar farm will not require Government subsidy.
  • Enso Energy is committed to using local suppliers during construction and operation where possible.

Getting to net zero

The UK Government has signed up to a Renewable Energy Directive to provide 15 per cent of energy from renewables by 2020 (based on a 2008 baseline). In addition to this, the Government has made a legal commitment to cutting carbon emissions to net zero by 2050 (Climate Change Act 2008 (2050 Target Amendment) Order 2019). To achieve net zero by 2050 both the National Infrastructure Commission and the National Grid have recently reported that to meet this target will require a rapid and expanded deployment of low carbon power, including solar..

Our vision

At Enso Energy we are making the idea of a country run on renewable energy a reality. We are one of the UK’s most experienced energy developers.

Our ambition is to use the latest solar technology to make a positive impact on our country and the communities we work with. We are firm advocates for renewable, low carbon, efficient, secure and sustainable energy that can be generated, stored and utilised locally. We are passionate about creating positive change for the UK’s energy requirements and carbon commitments.

Our innovative and entrepreneurial approach to subsidy-free renewable energy is assisting the country’s move towards a more secure renewable energy supply and accelerating our combined progress to net zero.

Our approach to consultation during the Coronavirus crisis

We are currently living through a pandemic, the likes of which the country has not experienced in living memory. Enso Energy agree with the recent guidance issued by the UK Government’s Chief Planner, which emphasised that planning applications that positively impact the country and local communities must continue to come forward.

In addition, Enso Energy believes that it is vital that local communities are able see and shape planning applications that may have an impact on them.

We therefore held a public consultation webinar and Q&A session, a recording of which can be viewed here. If you have any feedback on our draft proposals please fill in the form below.

Register for updates

If you would like to be kept up to date with Enso Energy’s plans for Hilfield Solar Farm then please contact Alpaca Communications via the form below or contact Jasmine, a member of the project team. Please view Alpaca Communications’ privacy policy here.

t: 020 7499 2842
e: jasmine.el-gabban@alpacacommunications.com

Please provide your contact details if you wish to get a response. Any information provided will only be used for the purpose of the planning application to the Local Planning Authority and will not be disclosed with any third parties. Your contact details will not be listed on the planning application documentation.

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Solar field