Indicative 4 kWp install in Maidstone: £6,900–£8,100. Region: South East (×1.04). Annual irradiance: ~970 kWh/kWp.
What Maidstone homeowners actually pay
Maidstone sits in one of the sunniest parts of mainland UK — irradiance is comparable to the south coast, and a well-sited 4 kWp array reliably clears 3,850 kWh per year. Most of the housing stock is post-war semis and 1980s estates on the fringes of town, which keeps installs fast and prices firmly in the £5,500–£7,200 range for a typical 4 kWp system. The harder jobs are the Victorian terraces around the town centre and ragstone cottages in surrounding villages, where heritage rules and stone fixings add cost.
Local notes for Maidstone
South-east Kent irradiance ~970 kWh/kWp/yr — among the highest in the UK.
Conservation areas concentrate around the town centre and the Medway riverside.
Newer estates in Allington, Bearsted and Loose are quick installs on standard concrete tiles.
DNO is UK Power Networks — G99 sign-off typically 4–6 weeks.
Field notes
Generation ~3,850 kWh/yr from a typical 4 kWp south-facing array.
South-east Kent yields are 8–12% above the UK average.
DNO is UK Power Networks — G99 typically 4–6 weeks.
Frequently asked questions
Are Maidstone's ragstone cottages harder to install on?
Slightly. Kentish ragstone walls and clay-peg tile roofs need specialist fixings and longer scaffolding times, adding roughly £200–£400 to a comparable install. Most heritage-aware installers in ME15/ME17 handle it routinely.
What system size fits a typical Maidstone semi?
4–5 kWp on most Allington, Bearsted or Loose semis. Larger detached homes in Bearsted village often fit 5–6 kWp with battery.