Start with the home most Basildon households live in: a terrace. At the 2021 Census, 43.9% of households in Basildon’s built-up area lived in terraced houses, a legacy of the new town’s building programme, against 18.7% in semis and 13.3% in detached houses. This worked example uses published national figures and our own run of the European Commission’s PVGIS tool to show where a sensible quote for a Basildon terrace should start. It will not tell you what your system costs, because that depends on your roof. For the town’s planning, network and grant position in full, see our page on solar panels in Basildon.
Nothing below is our price. We give a figure only after a survey.
Step 1: the national anchors
Two neutral sources set the range. The Energy Saving Trust, in advice updated 27 August 2026, puts a typical domestic system at around 4.5 kWp, around 12 panels covering 20 to 30 m² of roof, costing around £7,600 installed.
DESNZ publishes a second view built from real installations. Its median cost in the 2025/26 financial year was £1,546 per kW for 4 to 10 kW systems and £1,595 per kW for systems up to 4 kW. Those are the cost of an average job, not a package price, and they exclude batteries.
Step 2: scale it to a Basildon terrace
A mid-terrace roof is often narrower than the 20 to 30 m² the Trust’s typical system needs, so the survey may find room for fewer panels. The table shows two illustrations: the typical system, and a smaller 3 kWp array of the kind a tight roof might take. All figures are our arithmetic on DESNZ’s medians and our PVGIS run for central Basildon, which gives about 1,039 kWh per kWp a year for an unshaded roof facing due south at 35°.
| Illustration | DESNZ median per kW | Cost on that median | Yearly output (PVGIS) |
|---|---|---|---|
| 4.5 kWp, typical system | £1,546 | about £6,957 | about 4,680 kWh |
| 3 kWp, smaller roof | £1,595 | about £4,785 | about 3,120 kWh |
For scale, Ofgem’s typical domestic consumption value from 1 July 2026 is 2,500 kWh a year. Even the smaller array makes more than that over a year on paper, but much of it arrives in summer daytime, when a household may not be using it. East- or west-facing slopes make less than these figures, and shading changes the answer more than the town does.
Notice that the smaller system costs less in total but more per kW. Scaffolding, the inverter and the paperwork do not shrink in proportion to the panel count, which is why a quote for a small terrace array can look expensive per panel.
Step 3: a battery, or not yet
The Energy Saving Trust puts home batteries at £1,500 to £10,000, with a 5 kWh system at around £4,600. Added to its solar figure, a typical array with a 5 kWh battery comes to about £12,200, our arithmetic on its numbers. It also says fitting storage at the same time as panels costs less than a separate visit later. Whether a battery earns its place depends on how much of your output you would otherwise export, which is the subject of our page on battery storage in Basildon.
Step 4: the VAT line
HMRC zero-rates residential installations of solar panels and batteries until 31 March 2027. From 1 April 2027 the rate reverts to the reduced rate of 5%. Our post on VAT on solar panels and batteries explains how it appears on an invoice. Check that any quote states the rate it assumes.
What moves a Basildon quote
Roof area and access. On a terrace the usable slope, chimneys and dormers decide the panel count, and a mid-terrace with no side access affects how scaffolding goes up.
Roof structure. In 1963 house building in the new town shifted from traditional methods to system building, so a Basildon survey checks how the roof is built as well as how big it is.
The network. Basildon is on UK Power Networks’ network. A system up to 16 A per phase (3.68 kW) is notified under G98; a larger one, including many solar-and-battery systems, needs a G99 approval before work starts. If no supply upgrade is needed, there is nothing to pay UKPN.
Who decides. In the built-up area, 30.0% of households rent from a social landlord, and for them the roof is the landlord’s decision, not a quote to compare.
Designations. The borough’s four conservation areas are Billericay, Little Burstead, Great Burstead and Noak Bridge, and Noak Bridge has an Article 4 direction over part of the area. Elsewhere, roof panels on a house are permitted development within the standard limits.
Help with the cost
There is no general government grant for household solar, but Basildon has its own route. It bid separately from the Essex consortium and holds a £1.5 million Warm Homes: Local Grant allocation, delivered with E.ON. The council’s page describes it as free funding for owner-occupiers and private tenants with household income below £36,000 a year, on certain means-tested benefits or in a qualifying area, with applications due before November 2027; on 15 October 2026 the application link was still to follow. Under the earlier HUG2 programme, the council and E.ON upgraded 54 homes with measures that included solar panels. For the wider Essex picture, see solar panels in Essex.
We do not turn these figures into a savings claim. That depends on your tariff, your usage and what you export, and export rates are set by each supplier. Our guide to solar panel payback time in the UK sets out the variables, and a survey turns them into numbers for your house.
Sources: Energy Saving Trust, Solar panels: costs, savings and benefits explained (updated 27 August 2026) and Battery storage (updated 19 August 2026); DESNZ, Solar PV cost data (May 2026); PVGIS 5.3, European Commission Joint Research Centre, PVGIS-SARAH3 2005–2023, run 15 October 2026; Ofgem, typical domestic consumption values (from 1 July 2026); ONS, Towns and cities, characteristics of built-up areas, Census 2021 (Basildon BUA); Basildon Borough Council, Housing the People, Conservation areas, energy-support page and news release on the £1.5 million award; DESNZ, Warm Homes: Local Grant successful local authorities (updated 2 July 2026); GOV.UK, Apply for the Warm Homes: Local Grant; UK Power Networks, Solar panels and energy storage: cost, time and what’s involved; Energy Networks Association, EREC G98 Issue 2 (10 March 2025); HMRC VAT Notice 708/6.