# Solar Panels Sevenoaks # Solar panels in Sevenoaks: larger detached roofs, garden arrays and the Green Belt and Kent Downs around the town *Last reviewed: 29 October 2026. Figures are estimates unless stated; method and sources are given beside each one.* Sevenoaks has more detached homes than any other town in this batch. In the Eastern, Kippington, Northern, and Town and St John's wards, 34.3% of households live in a detached house and 33.8% own outright ([Census 2021](https://www.nomisweb.co.uk/sources/census_2021)). Larger roofs make systems over 4 kWp realistic. Bigger gardens raise the option of a ground-mounted array, which has different planning rules here. ## Homes in the four town wards DetachedSemiTerracedFlatOwned outrightOwned with a mortgage or loan34.3%23.4%16.7%25.5%33.8%32.1%*Census 2021 [TS044](https://www.nomisweb.co.uk/datasets/c2021ts044) and [TS054](https://www.nomisweb.co.uk/datasets/c2021ts054), our ward totals. Shared ownership is a separate Census category and is not included.* ## Sizing a bigger system SystemRoof needed (approx.)South-facing outputEstimated cost4 kWpone 10-panel slopeabout 4,060 kWhabout £7,4006 kWptwo faces, or one large slopeabout 6,090 kWh (south)about £10,3008 kWpseveral facesabout 8,120 kWh (south)about £13,800*Output: PVGIS 1,015 kWh/kWp facing south. Panel counts assume about 400 W per panel.* *These are budgeting estimates, not prices: kWp × the [DESNZ](https://www.gov.uk/government/statistics/solar-pv-cost-data) South East mean for 2025/26 (£1,858.90/kW for 0–4 kW, £1,721.49/kW for 4–10 kW), rounded to the nearest £100, with no storage.* Most detached roofs face more than one way. At the town point, PVGIS gives 958 kWh/kWp facing south-east, 956 facing south-west, 811 facing east and 806 facing west. A 3 + 3 kWp east-west layout gives about 4,850 kWh a year. *Where these come from: [PVGIS](https://re.jrc.ec.europa.eu/pvg_tools/en/) release 5.3 with SARAH3 irradiance, 1 kWp on a roof at 35° with 14% losses and the local skyline. Treat them as a starting estimate before a survey.* The model point is 151 m above sea level, with a skyline no higher than 1.5°. Garden trees are the bigger issue for many Sevenoaks homes, and PVGIS cannot model them. **Grid:** above 16 A per phase (about 3.68 kW on a single-phase supply), UK Power Networks must approve the system first under [G99](https://www.ukpowernetworks.co.uk/new-electricity-connections/distributed-energy-resources-der-generation). Smaller systems use [G98](https://www.energynetworks.org/assets/images/Resource%20library/G98%20Single%20Premises%20Summary%20Guide.pdf). For a 6 to 8 kWp system, the installer may limit export or propose a different inverter setup. Ask them to explain it. Exports are paid through a [Smart Export Guarantee](https://www.ofgem.gov.uk/sites/default/files/docs/2020/02/seg%5Fgenerator%5Fguidance%5F-%5Ffinal%5Ffor%5Fpublication.pdf) tariff. **Want a layout drawn on your own Sevenoaks roof?** RoboMo™ maps it from a pin and saves a free project you can share with installers. [Start RoboMo™ free](https://kilowatts.uk/services/residential/renewable-energy/residential-solar-panel-installation/compare/) [Get installer quotes](https://kilowatts.uk/services/#get-quote-now) ## Batteries and VAT A larger array exports more in summer, so a battery makes more sense. The [Energy Saving Trust](https://energysavingtrust.org.uk/advice/battery-storage/) gives about £1,500 to £10,000 depending on capacity. Solar and batteries for homes are zero-rated for VAT until 31 March 2027 ([HMRC](https://www.gov.uk/guidance/vat-on-energy-saving-materials-and-heating-equipment-notice-7086)). Size it with the [battery calculator](https://kilowatts.uk/batteries/). ## Garden arrays near Knole, the Kent Downs and the Green Belt Land east of the town, including Knole, is in the [Kent Downs National Landscape](https://www.planning.data.gov.uk/entity/1000018), and the countryside around the town is [Green Belt](https://www.planning.data.gov.uk/entity/610063). A rooftop array on a house follows the same national limits in both. Ground-mounted panels in a garden are permitted development only under [Class B](https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14/crossheading/class-b-installation-or-alteration-etc-of-standalone-solar-equipment-on-domestic-premises). On [article 2(3) land](https://www.legislation.gov.uk/uksi/2015/596/article/2), which includes National Landscapes and conservation areas, that class adds a condition about distance from the boundary. Read Class B, or ask Sevenoaks District Council, before planning a garden array. ## Town conservation areas [Sevenoaks District Council's conservation areas directory](https://www.sevenoaks.gov.uk/directory/3/conservation_areas) lists the town areas, including [Sevenoaks High Street](https://www.sevenoaks.gov.uk/directory_record/1438/sevenoaks_high_street) (designated 1971) and [Hartslands](https://www.sevenoaks.gov.uk/directory_record/1424/sevenoaks_hartslands) (first designated 2011). Others include Kippington and Oakhill Road, The Vine, Vine Court, Granville Road and Eardley Road, Brittains Farm, Wildernesse and Riverhead. Maps are on the [conservation area data page](https://www.sevenoaks.gov.uk/info/20012/heritage_and_trees/930/conservation_area_data). **National rules** ([GPDO Part 14, Class A](https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14/crossheading/class-a-installation-or-alteration-etc-of-solar-equipment-on-domestic-premises), as amended by [SI 2026/896](https://www.legislation.gov.uk/uksi/2026/896/contents/made) from 27 August 2026): in a conservation area, panels on a *wall, balcony or roof enclosure* fronting a highway are not permitted development. Elsewhere on a house, pitched-roof panels must stay within 0.2 m of the slope and below the ridge, and panels on a wall, balcony or roof enclosure may project up to 0.4 m, or 0.2 m where it abuts a highway. Listed buildings are excluded. **Article 4 directions.** The district publishes an [Article 4 open dataset](https://gis-sevenoaks.opendata.arcgis.com/datasets/sevenoaks::article-4-directions-sdc-public) with mapped areas, but the records do not explain what each one covers. The most recent direction we found is for the [Kemsing conservation area](https://engagement.sevenoaks.gov.uk/strategic-planning/kemsing-conservation-area-article-4-direction/) (2023), which covers front boundaries and front gardens. If your property falls in a mapped area, ask the council what that direction covers. ## Choosing who fits it in Sevenoaks Shortlist two or three businesses from the [Kilowatts UK listings](https://kilowatts.uk/electrical-companies/) and ask for [like-for-like quotes](https://kilowatts.uk/services/#get-quote-now). Like-for-like means the same roof faces, the same system size and the same battery (or none). Get the warranty terms in writing. ## Nearby - [Tunbridge Wells](https://kilowatts.uk/services/residential/renewable-energy/residential-solar-panel-installation/kent/tunbridge-wells/) · [Dartford](https://kilowatts.uk/services/residential/renewable-energy/residential-solar-panel-installation/kent/dartford/) - [Maidstone](https://kilowatts.uk/services/residential/renewable-energy/residential-solar-panel-installation/kent/maidstone/) further along the M20 [Compare solar quotes Start your solar assessment ](/services/residential/renewable-energy/residential-solar-panel-installation/compare/)[Free consultation](/booking/) [Battery ROI calculator](/batteries/) Local context ## What matters in Sevenoaks ## Compare solar panels for your property Use the property's postcode and building details for a more useful starting point than a generic local average. [Start your solar assessment](/services/residential/renewable-energy/residential-solar-panel-installation/compare/) ## Related solar topics Explore useful topics connected with solar in Sevenoaks. [Kent Renewable Energy](/tags/kent-renewable-energy/)[Panel Efficiency](/tags/panel-efficiency/)[Solar Panel Efficiency](/tags/solar-panel-efficiency/)[Solar Panel Efficiency Uk](/tags/solar-panel-efficiency-uk/)[Solar Panel Output](/tags/solar-panel-output/)[Battery Storage](/tags/battery-storage/) ## Get solar quotes in Sevenoaks Compare installers and prices for solar in Sevenoaks. [Get solar quotes](/services/#get-quote-now) ## Sources - https://re.jrc.ec.europa.eu/pvg\_tools/en/ - https://www.gov.uk/government/statistics/solar-pv-cost-data - https://energysavingtrust.org.uk/advice/battery-storage/ - https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14/crossheading/class-a-installation-or-alteration-etc-of-solar-equipment-on-domestic-premises - https://www.gov.uk/guidance/vat-on-energy-saving-materials-and-heating-equipment-notice-7086 - https://www.ofgem.gov.uk/sites/default/files/docs/2020/02/seg%5Fgenerator%5Fguidance%5F-%5Ffinal%5Ffor%5Fpublication.pdf - https://www.energynetworks.org/assets/images/Resource%20library/G98%20Single%20Premises%20Summary%20Guide.pdf - https://www.ukpowernetworks.co.uk/new-electricity-connections/distributed-energy-resources-der-generation - https://www.nomisweb.co.uk/datasets/c2021ts054 - https://www.nomisweb.co.uk/datasets/c2021ts044 - https://www.nomisweb.co.uk/sources/census\_2021 - https://www.legislation.gov.uk/uksi/2026/896/contents/made - https://www.legislation.gov.uk/uksi/2015/596/schedule/2/part/14/crossheading/class-b-installation-or-alteration-etc-of-standalone-solar-equipment-on-domestic-premises - https://www.legislation.gov.uk/uksi/2015/596/article/2 - https://www.planning.data.gov.uk/entity/1000018 - https://www.sevenoaks.gov.uk/directory/3/conservation\_areas - https://www.sevenoaks.gov.uk/directory\_record/1424/sevenoaks\_hartslands - https://www.sevenoaks.gov.uk/directory\_record/1438/sevenoaks\_high\_street - https://www.sevenoaks.gov.uk/info/20012/heritage\_and\_trees/930/conservation\_area\_data - https://engagement.sevenoaks.gov.uk/strategic-planning/kemsing-conservation-area-article-4-direction/ - https://gis-sevenoaks.opendata.arcgis.com/datasets/sevenoaks::article-4-directions-sdc-public - https://www.planning.data.gov.uk/entity/610063 Solar panels ## Residential solar panels [![AIKO Neostar 3S54 A495-MCE54Mb 495W](/images/panels/aiko-neostar-3s54-a495-mce54mb-495w.jpg) 495WAIKO Neostar 3S54 A495-MCE54Mb 495W AIKO Solar AIKO Solar · 495W View details](/services/residential/renewable-energy/residential-solar-panel-installation/solar-panels/aiko-neostar-3s54-a495-mce54mb-495w/)[![UKSOL UKS-S108-M10N-R 460W](/images/panels/uksol-uks-s108-m10n-r-460.jpg) 460WUKSOL UKS-S108-M10N-R 460W UKSOL UKSOL · 460W View details](/services/residential/renewable-energy/residential-solar-panel-installation/solar-panels/uksol-uks-s108-m10n-r-460/)[![DMEGC Solar DM460M10RT-B54HBB](/images/panels_resolved/dmegc-solar-dm460m10rt-b54hbb/320.webp) 460WDMEGC Solar DM460M10RT-B54HBB DMEGC Solar DMEGC Solar · 460W View details](/services/residential/renewable-energy/residential-solar-panel-installation/solar-panels/dmegc-solar-dm460m10rt-b54hbb/) ## Frequently Asked Questions ### What size solar system suits a detached house in Sevenoaks? Often 4 to 8 kWp across one or more roof faces. Our PVGIS estimate for a south-facing 6 kWp array is about 6,090 kWh a year. A 3 + 3 kWp east-west layout gives about 4,850 kWh. ### How much does a 6 kWp system cost in Sevenoaks? About £10,300 by our estimate, using the DESNZ 2025/26 South East average of £1,721.49 per kW for 4 to 10 kW systems. No battery is included, and quotes will differ. ### Can I put ground-mounted solar panels in my Sevenoaks garden? Possibly, under the national rules for stand-alone solar (Class B). On protected land, which includes the Kent Downs National Landscape and conservation areas, there is an extra boundary-distance condition. Read the rules or ask Sevenoaks District Council first. ### Does the Green Belt stop roof panels in Sevenoaks? No. The national rooftop limits for houses make no exception for Green Belt. Conservation areas, listed buildings and Article 4 directions are the things to check. ### Will a large system need permission from UK Power Networks? Usually, if it exceeds 16 A per phase (about 3.68 kW on a single-phase supply). The installer applies under G99 before fitting. Smaller systems are notified afterwards under G98.