Frequently asked questions (FAQ)
Solar farms contribute to Net Zero carbon emission targets, enable more energy to be generated domestically improving security of supply, and are the cheapest form of new electricity generation1, alongside other renewable technologies. This makes solar farms, like Chimmens, not just good for the environment but also for the consumer.
More information about solar can be found on the Solar Energy UK site.
Where would the solar farm be?
Between Horton Kirby and Fawkham, Sevenoaks. You can see the exact location of the proposed site under About the Project.
How much electricity would it produce?
The solar farm would be capable of producing up to 49.9 MW of electricity, the equivalent of producing clean, green electricity for around 22,9452 homes every year.
Why have you chosen this site?
The site has been chosen as it has good solar irradiation levels and lies outside of any statutory environmental, archaeological and national landscape designations. Another key driver for the location of the project is its proximity to a viable grid connection, which is on the same site as the solar farm. Availability of sites across the UK with sufficient export capacity is diminishing, and the 132 kV overhead line crossing the site does have sufficient capacity.
Have you made any changes since the consultation in July 2023?
The Chimmens project has been through a detailed design process, and we took into consideration feedback from the community and stakeholders, as well as the results of site surveys and assessments. This resulted in a number of changes being made to the design to ensure the solar farm fits sensitively into the existing landscape whilst maximising the low carbon, low-cost electricity generation. The design changes made included:
- minimum 100m buffer between residential properties and solar infrastructure. A minimum 200m buffer has been achieved to the north west of the site;
- new native woodland screening on the northern boundary of the site and extensive new hedgerow planting throughout; and
- changes to inverter and storage locations to benefit from existing mature native hedgerows so that screening will take effect immediately.
As well as appropriate setting back of the solar infrastructure, potential visibility of the solar farm will be reduced by existing trees and hedgerow and new and infill native planting. As well as providing screening, the planting will provide wildlife corridors and vital resources for mammals, birds, and insect species.
RES, as applicant, considered the original design of the scheme fitted sensitively into the existing landscape whilst maximising the low carbon, low-cost electricity generation. We, however, considered feedback and professional advice and following the refusal of the application, minor further amendments were made to the design of the proposal. Further information can be found here.
We already have a solar farm with planning consent in the local area
Solar energy is now one of the most cost-effective ways to get the UK to net-zero carbon emissions and to improve security of supply. We appreciate not everyone is in favour of solar farms, however, a recent government survey has found that having been asked their views on the prospect of a solar farm being built in their local area, 81% of respondents said they would be very happy, fairly happy or would not mind. Only 3% were significantly opposed, while 8% felt that a solar farm would not be feasible locally.
The planning application was informed by a Landscape and Visual Assessment (LVA), and considers any potential cumulative impact from other developments nearby. The design utilises existing vegetation and includes extensive new planting to reduce potential visibility from local properties.
What about the impacts on agricultural land?
The solar farm would not pose a threat to food security. The solar farm would not pose a threat to food security. According to the Department for Environment, Food and Rural Affairs (DEFRA), climate change could reduce the UK’s stock of high-grade agricultural land by nearly three-quarters by 20503.
The solar farm will help towards tackling climate change and furthermore, is specifically designed to be dual purpose, enabling continued agricultural use, in the form of sheep grazing, and renewable generation.
Sheep farming provides employment, supports rural economies and can produce a much more diverse ecological mosaic across the site. Landscapes managed by grazing sheep support a rich diversity of wildlife, while producing food.
Furthermore, where a solar farm is installed on land which has been intensively farmed, it enables the ground underneath to recover, while providing income for the farming business.
The majority of Chimmens Solar Farm is on Best and Most Versatile (BMV) land. Whilst the preference is to always develop on land not classified as BMV, development on BMV land may not be precluded when there is a lack of alternative sites at lower Grades across the district, with a viable grid connection. Solar farm development is also unlikely to lead to significant and irreversible long-term loss of BMV agricultural land. Indeed, the low intensity regime of a solar farm allows the regeneration of soil quality, ensuring the availability of high-quality agricultural acreage for the future.
The planning application was also informed by an Agricultural Impact Assessment which considers the availability of agricultural resource in the local area, an analysis of the Agricultural Land Classification grading at Chimmens Solar Farm and the impact of diversifying the landowner’s business. There is a significant threat to farming practices across the UK due to the challenges caused by the changing climate, affecting the viability of some agricultural businesses. Projects like Chimmens Solar Farm can enable diversification of agricultural businesses whilst tackling the effects of climate change.
The Chimmens Solar Farm planning application was also supported by a Site Alternatives Study which concludes that the site is the most appropriate and viable site, in the local area, for connecting clean green renewable solar electricity to the grid.
What happens when the solar farm reaches the end of its operational lifetime (40 years)?
The solar farm does not contain any permanent infrastructure and is entirely reversible at the end of its operational lifetime and the land can returned to its previous use.
In most cases solar panels are recyclable and there are well established industrial processes to do this. There are organisations around the UK and Europe specialising in solar recycling, such as PV Cycle and the European Recycling Platform.
What benefits would the solar farm deliver?
Chimmens Solar Farm would be capable of producing clean, green electricity for around 22,945 homes every year and save up to 32,1544 tonnes a year of CO2 compared to electricity generated from fossil fuels.
A Landscape Masterplan accompanied the planning application and provides detail on where existing vegetation is retained and where we propose significant increases in new native woodland, hedgerows and other ecological enhancements. Such measures will reduce potential visibility of the project as well as providing wildlife corridors and vital resources for mammals, birds, and insect species. The landscape and ecological measures would deliver a biodiversity net gain of 50% in area habitats and a 39% net gain in hedgerow habitats.
RES is committed to ensuring that, wherever possible, local contractors and employees are used in all aspects of solar farm development. The major opportunities arise during the construction phase when suitably qualified local firms are often invited to bid for different aspects of construction. We encourage our contractors to source construction materials locally (i.e. within the county) and to use local transport and plant hire companies where possible, in addition to local services and amenities.
RES also believes that our renewable energy schemes should also provide meaningful benefits locally and we are working with local stakeholders on an agreement to deliver a community benefit fund worth £1 million over the project’s lifetime.
How can I find out more about any potential impacts of the solar farm?
In addition to the information presented under About the Project, we have carried out the following assessments of potential impacts from the proposed solar farm:
- Cultural Heritage Impact Assessment; -
- Landscape and Visual Assessment (LVA);
- Ecological Impact Assessment (EcIA);
- Construction Traffic Management Plan (CTMP); and
- Site specific information on Agricultural Land Classification.
Further information can be found here.
What stage is the project at?
Following Sevenoaks District Council’s refusal, under delegated powers, of our Chimmens Solar Farm application in December 2024, RES lodged an appeal in January 2025.
In July 2025, the appeal was allowed, granting planning permission for the 49.9MW project.
Further information will be provided on this website as the project progresses.
2 RES has changed the formula for the homes powered and therefore the homes figure is now calculated by taking the predicted annual electricity generation of the site (using an average capacity factor of 11.2%) and dividing this by the annual average electricity figures from DESNZ (Department for Energy Security and Net Zero, formerly BEIS) showing that the annual GB average domestic household consumption is 3,239 kWh (January 24). Note, the change in formula has led to a difference in homes powered to that previously publicised.
4 RES now uses DESNZ’s “all non-renewable fuels” emissions statistic of 424 tonnes of carbon dioxide per GWh of electricity supplied in the Digest of UK Energy Statistics (July 2023) Table 5.14 (“Estimated carbon dioxide emissions from electricity supplied”) to calculate carbon reduction. Carbon reduction is calculated by multiplying the total amount of electricity generated by the solar farm per year by the number of tonnes of carbon which fossil fuels would have produced to generate the same amount of electricity. Note, the change in source has led to a difference in carbon offset to that previously publicised.