Black Friday Solar Panel Deals UK
Black Friday Solar Panel Deals UK: Real Bargains or November Hype?
Every November my inbox fills with “BLACK FRIDAY SOLAR MEGADEAL” banners, and every November I do the same thing: pull the actual quote apart and compare it to what the same system cost in March. I’ve been doing this long enough to tell you that Black Friday solar is real — just not in the way a television is real. Nobody’s knocking 40% off a proper installation. But the right kind of November deal, timed well, is genuinely worth having.
Here’s how to tell the two apart, what the freebies are actually worth, and — the bit nobody else covers — why the 2026 policy calendar matters more than the discount.
A genuine Black Friday discount on a full UK install is usually a few hundred quid — roughly 5–10% — because installer pricing already sits in a tight, competitive band. The real November value is in bundled extras (EV charger, battery upgrade), keen quiet-season pricing, and beating two hard deadlines: ECO4 closes 31 December 2026, and 0% VAT ends 31 March 2027. Anything claiming 30%+ off a full install is anchor pricing, not a deal.
The 2026 dates that actually matter
Black Friday solar doesn’t happen in a vacuum this year. It lands slap in the middle of the most deadline-heavy winter the UK solar market has ever had. Circle these:
Why does that matter for deal-hunting? Because a “deal” is only a deal relative to what you’d pay otherwise — and this winter, the otherwise includes a VAT rise in spring and a scrum of buyers who notice that rise in January. Installers know the quiet season from October to February is when they have to sharpen prices anyway. Black Friday simply puts a banner on it.
What a real discount looks like in 2026
Let’s set expectations with real numbers. A properly specified 4kW system, fully installed with 0% VAT, should land between £5,500 and £7,500 this year — that’s the range SolarBriton’s own MCS-sourced cost data puts it at, averaging around £1,591 per kW across England — with many straightforward 3-bed roofs landing around £6,000–£6,500. Add a 5kWh battery and the fair range moves to roughly £8,000–£11,500; step up to a 10kWh battery and it’s £9,500–£13,500. Those are the benchmarks — my full cost guide and the MCS data deep-dive show the working behind them.
Against those numbers, a honest Black Friday discount is 5–10%: roughly £275 to £750 off a panels-only job, a bit more on a big solar-plus-battery package. That matches what installers routinely concede in the quiet season anyway. What you will also see — and what’s often worth more — is bundle value:
Bundles, freebies and finance promos — what they’re really worth
| The promo | Real value to you | The catch to check |
|---|---|---|
| Straight cash discount (£275–£750 off) | Real, but modest — 5–10% on a £6k–£7.5k job | Only meaningful if the starting price was fair. £700 off an inflated quote is still an inflated quote |
| “Free” battery upgrade | Big, if you wanted a battery anyway | Compare the total against competitors’ battery-inclusive quotes (£8,000–£13,500 depending on battery size is fair). “Free” batteries have a habit of living inside above-market totals |
| Free EV charger or diverter | Genuinely worth several hundred quid if you’d have bought one | Worth nothing if you wouldn’t. My solar + EV charger combos guide shows when the bundle math works |
| £0 deposit / 0% finance for 12–24 months | Not a discount at all — it’s a payment schedule | Check the APR after the promo window. If you’d pay cash, a cash discount beats finance every time. My 0% finance debt-trap piece runs the numbers |
| Free extras (pigeon mesh, monitoring, extended warranty) | Nice-to-have; cheap for the installer to give | Never sign for the freebies alone. Mesh is worth having — see what it costs standalone — but it won’t rescue a bad price |
| Price freeze / hold-your-quote until spring | Underrated, given the March VAT deadline rush | Get the freeze in writing, with the exact spec and price it protects |
Spotting a fake deal in thirty seconds
The solar market borrows retail’s tricks every November. Here’s what I’d run past any quote before the word “deal” means anything:
- Anchor pricing. “Was £12,995, now £9,995” — when the fair 2026 price for that system is £5,500–£7,500. The “was” price never existed. Check it against the MCS data.
- 30–60% off a full installation. Doesn’t exist. Those percentages belong to portable power stations and DIY kits, not fitted systems. Hardware margins simply don’t stretch that far.
- “Today only” pressure on a purchase that will sit on your roof for 25 years. Real installers will hold a quote for a few days while you compare.
- Deposit demanded before a survey or signed contract. A small holding deposit is normal; a large one before paperwork is a red flag — my seven red flags guide covers the rest.
- Vague specs. “Premium Tier-1 panels” with no make, model or wattage. A fair quote names everything.
- No MCS certification. No MCS, no SEG export payments, ever. Check the badge means what it says in my MCS explainer.
Fair 2026 prices: your negotiating ammunition
The single most useful thing about Black Friday is that it concentrates your negotiating power in one fortnight — installers expect to do deals, so ask for one. But a deal is only as good as your benchmark. Here’s the fair-price table I’d keep open in another tab, matched to SolarBriton’s own MCS-sourced cost data:
| System | Fair installed price, 2026 (0% VAT) | With a genuine 8–10% November deal |
|---|---|---|
| 2–3kWp (6–8 panels) | £4,000–£5,500 | ~£3,600–£5,000 |
| 4kWp (9–10 panels) | £5,500–£7,500 | ~£5,000–£6,800 |
| 5kWp (11–12 panels) | £7,500–£9,000 | ~£6,800–£8,200 |
| 6kWp (13–14 panels) | £8,500–£11,500 | ~£7,700–£10,500 |
| 4kWp + 5kWh battery | £8,000–£11,500 | ~£7,300–£10,500 |
| 4kWp + 10kWh battery | £9,500–£13,500 | ~£8,600–£12,300 |
And remember the variation hiding inside those ranges: on the same street, quotes for identical work can differ by 30–40% depending on overheads and how busy a firm is. The “Black Friday discount” you should be proudest of is the one you create yourself by holding three quotes against each other.
Buy now, or wait for 2027?
This is the question nobody asking “is the deal real?” expects, and it’s the one that matters most this year.
If you might qualify for ECO4 — benefits, low income, poor EPC — forget deals entirely and apply now. Fully funded panels beat any discount, and the scheme closes 31 December 2026 with waiting lists already building. My ECO4 deadline guide and the grants hub cover eligibility, including council Flex routes for households just above the benefits line.
If you were going to finance anyway, waiting for the Warm Homes Plan’s 0% loans — due to open to homeowners in April 2027 — will usually beat any Black Friday finance promo. A few percent off the price rarely outweighs several years of interest at a proper APR.
If you’re a cash buyer with fair quotes in hand, November is a genuinely sensible moment: quiet-season pricing, a real concession on top, 0% VAT still running (per HMRC’s extension, it reverts to 5% on 1 April 2027), and crews with space in the diary. A system signed in November is typically generating by January — live for the entire spring ramp-up, when May to August alone delivers around half a UK system’s yearly output. The buyer who waits for “solar weather” in May misses that and pays peak-season prices for the privilege.
Every homeowner who notices the VAT deadline in January 2027 will chase the same crews in the same twelve weeks. If 0% VAT matters to your maths, the calm, cheap window is this winter — not the spring scrum.
How to work Black Friday properly
- Start early November, not the 27th. Get three quotes on the same written spec before the banners go up. Then you’ll know exactly what “deal” means when one appears.
- Name everything. Panel make and wattage, inverter model, battery model, scaffolding, DNO fees, MCS certificate. Deals rot fastest in the vague bits.
- Negotiate the quiet-season price first, the Black Friday extra second. November is already keen-pricing season; the banner discount should sit on top.
- Ask for the battery or EV charger promo to be priced both ways — with and without — so you can see what the freebie actually cost. My battery guide gives you the standalone numbers.
- Keep deposits small and contractual. Nothing large before a signed contract and survey.
- Plan your export tariff for commissioning week. SEG rates run from around 3p on the weakest tariffs to the mid-20ps on the best fixed, no-battery deals, and up to 32p on battery-linked time-of-use tariffs — picking well is worth £150+ a year. My SEG comparison ranks them.
Who should buy in November — and who should wait
- Cash buyers with three fair quotes and a roof that suits — a real concession plus 0% VAT is a good deal in any calendar
- Battery-and-EV households who can harvest the bundle freebies at a fair total price
- Bigger-system owners (over 3.68kW per phase) — signing in autumn lets the G99 DNO paperwork churn through winter while the queue is short
- Anyone ECO4-eligible — but via the scheme, not the sale, and now, not late December
- Finance buyers — the 2027 0% loans will probably beat every promo on show
- Anyone whose “deal” price still sits above the fair ranges in the table
- Rush jobs driven by the banners. A bad install at 10% off is still a bad install
My verdict
Black Friday is a fine time to buy solar panels in the UK — as long as you treat it like a negotiation window, not a treasure hunt. The honest discounts are modest, the bundle freebies are the real prize, and the winter crew availability is the hidden gem. But the banners are the least important part of this winter’s story. The deadlines are the story: ECO4 on 31 December, VAT on 31 March. Get your three quotes early, hold them against each other, and let the installers’ November enthusiasm work for you — not the other way round.
FAQs
A little, yes — but not like televisions. A genuine Black Friday discount on a full installation is usually a few hundred pounds, roughly 5–10%, because installer prices already sit in a competitive range of £5,500 to £7,500 for a 4kW system. The bigger November wins are bundled extras like an EV charger or better battery terms, and the keener quiet-season pricing installers offer between October and February. If you see 30% or 40% off a full install, that’s anchor pricing, not a deal.
It depends how you’re paying. If you qualify for ECO4, ignore deals entirely and apply before the scheme closes on 31 December 2026. If you were going to finance, waiting for the Warm Homes Plan 0% loans arriving in April 2027 will usually beat any Black Friday finance promo. If you’re paying cash and your quotes are fair, a genuine November deal plus 0% VAT — which ends 31 March 2027 — is a perfectly good time to buy, and winter crews are quicker and keener.
Benchmark it. Get at least three quotes from MCS-certified installers for the same specification, and compare them against the fair 2026 ranges — roughly £5,500 to £7,500 for a 4kW system, £8,000 to £13,500 with a battery depending on its size. Insist the quote names exact panel, inverter and battery models, and be wary of large deposits, ‘today only’ pressure, or a ‘was’ price that starts far above what anyone else charges.
