Monmouthshire
Solar panels in Blackwood, sized to your roof.
About 6,280 kWh a year from 12 panels in Blackwood, £6,360 installed, with your system designed on a free 30-minute video call.
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- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
Blackwood's solar year
PVGIS puts Blackwood at 987 kWh per kWp a year, 1% below our Monmouthshire county estimate. 69% of it arrives between April and September, peaking in May.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 35 |
| February | 52.1 |
| March | 87.1 |
| April | 113 |
| May | 124 |
| June | 121 |
| July | 122 |
| August | 106 |
| September | 91.5 |
| October | 60.7 |
| November | 42.3 |
| December | 33 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Against Great Britain as a whole: Blackwood makes 987 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Blackwood is 7% above it.
How Blackwood compares
Small towns rarely get published solar figures, so here are the numbers for Blackwood. It is one of 16 Monmouthshire towns we track, and it ranks 10th of 16 for solar yield, a town of 12,627 people in the House of Commons Library settlement data. PVGIS gives its roofs 987 kWh per kWp a year, 2.70 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £888 of year one benefit, £247 of it from your own generation and £641 from export at 12p.
These are starting numbers, not a quote. The calculator below opens on Blackwood's own PVGIS figure; change the panels, the battery or the export rate and it reruns. The design call replaces every assumption with your roof and your bills.
Caerphilly is the planning authority covering Blackwood, which the House of Commons Library classes as a small town.
The charger is in the installed price but left out of payback: charging savings depend on your mileage and tariff, which the design call models properly.
Your real roof and usage, worked through on a free 30-minute video call. Use the full form or leave three details below.
Price this for your roof
Three details. We call or text within one working day to book your free 30-minute design call, on video or by phone if you prefer.
Generation is modelled from PVGIS satellite data for Blackwood's own coordinates (51.66809, -3.2013), using the same 26.32p/kWh import value and £1,000 per kWp installed pricing as every Clearline estimate; the methodology is on our help page.
Who runs the grid in Blackwood
National Grid Electricity Distribution (NGED) owns and runs the local electricity network in Blackwood, as part of its South Wales licence area.
For a typical home the paperwork is light: a system of up to 3.68kW per phase goes through G98, which means NGED is notified within 28 days of switch-on rather than asked beforehand.
A bigger inverter or battery output needs a G99 application in advance. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late.
Sources: NESO DNO licence areas (3 May 2024); NGED, guaranteed standards of performance table, checked 25 September 2026. G98 vs G99, explained.
Adding a heat pump or an EV charger in Blackwood
A heat pump in Blackwood
A heat pump does most of its work from November to February. Over those four months, 12 panels in Blackwood make about 1,030 kWh, against 3,000 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more than the roof.
In Wales, the Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump and £2,500 towards an air-to-air one, with £1,500 more until March 2027 for homes heated by oil or LPG with no mains gas (gov.uk, checked 28 September 2026).
Charging an EV in Blackwood
A 12-panel roof in Blackwood makes about 790 kWh in May. A typical home uses around 70 kWh of that in daylight (the calculator's typical-use settings), which leaves most of the month's output for an EV or for export.
Renters and flat owners with private off-street parking can get 75% off a chargepoint and its installation, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above adds a 7.4kW smart charger from £1,100 installed.
What the named kit costs, installed
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Blackwood
Faults, servicing and ageing inverters follow the same economics in Blackwood as anywhere else, and the guides below price them plainly.
Common questions about solar in Blackwood
What does a solar panel system produce in Blackwood?
Each kWp of panels in Blackwood makes 987 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,280 kWh, from about 210 kWh in December up to 790 kWh in May.
What would 12 solar panels cost in Blackwood?
£6,360 for 12 panels (6.36 kWp), the same as in every other place we cover, because solar is priced at £1,000 per kWp installed rather than by area. A battery adds its own installed price on top. Where Blackwood differs is output: about 6,280 kWh a year from that system.
Would a system in Blackwood need approval from the network operator?
Blackwood is on National Grid Electricity Distribution's network (South Wales licence area). Systems up to 3.68kW per phase of inverter output follow G98: NGED is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. NGED's guaranteed standards give 45 working days for a low voltage generation quotation, with £80 paid for each working day late. Our G98 vs G99 guide explains both routes.
How much would export pay on a system in Blackwood?
It is exported. With typical use and no battery, about 5,341 kWh of the 6,280 kWh a 12-panel system makes in Blackwood goes to the grid, around £641 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Is solar worth it in Blackwood in winter?
It works, but the year is lopsided. 69% of a Blackwood roof's output lands between April and September; the four months from November to February give about 1,030 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Blackwood compares with its neighbours
The six closest towns we publish, run through the identical PVGIS query as Blackwood.
| Town | kWh per kWp a year | vs Blackwood |
|---|---|---|
| Blackwood | 987 | this town |
| Pontllanfraith | 988 | +1 kWh |
| Bargod | 985 | −2 kWh |
| Ystrad Mynach | 991 | +4 kWh |
| Newbridge | 999 | +12 kWh |
| Abertillery | 947 | −40 kWh |
| Risca | 991 | +4 kWh |
Same PVGIS v5.2 query for every town. Small differences are within year-to-year weather; more than about 30 kWh per kWp apart is geography.
Also for Blackwood: Solar panels in Blackwood from OVO Solar & Battery
See a number before you speak to anyone
Answer a few questions about your roof and usage and see an instant solar and battery estimate. No email needed to see the result.
Guides worth reading before your call
Sourced, dated and written by us. The same ground we cover on your free call.
Microinverters, optimisers or a plain string inverter: who needs what
Shade and roof layout decide this. An honest triage of the three approaches.
Read the guide →Tesla Powerwall 3 against the alternatives, and where each one wins
The strongest single box in the market, and the houses it is still wrong for.
Read the guide →How solar aware EV charging actually works
The CT clamp, the surplus tracking and the 1.4kW floor that catches people out.
Read the guide →Sizing a heat pump: what a proper survey covers
Sized by calculation, not by rule of thumb. What the survey covers, and what guessing costs.
Read the guide →What the Smart Export Guarantee actually is
The scheme obliges suppliers to pay above zero, and leaves the rate to them.
Read the guide →What MCS certification actually is, and why your export payments depend on it
The badge that decides whether your solar earns export payments. It cannot be added later.
Read the guide →Get my free quote
Takes about two minutes. We call or text within one working day to book your free 30-minute video design call at a time that suits you. We design it around your roof and your numbers, and our MCS-certified, fully insured installation teams install it.