How Much Do Solar Panels Cost for a Holiday Cottage?

Quick answer

A single UK self-catering holiday cottage with a hot tub is indicatively £7,000 to £16,000 fully installed, for a 4 to 8 kW roof array plus a 5 to 10 kWh battery, roughly 10 to 20 panels across 25 to 55 square metres of roof. Indicative payback runs around 7 to 11 years, faster with a hot tub and guest EV charging, slower without. These are scoping ranges for a conversation, not quotes.

Key takeaway: the headline cost matters less than what drives it. The hot tub, your heating fuel and whether you fit a battery move the payback more than the panel price does. This guide breaks down each cost lever so you can read a quote properly.

What a holiday cottage system actually costs

The figures below are indicative ranges scaled from small-domestic and small-commercial cost-per-kW assumptions (roughly £1,400 to £2,000 per kW at this scale). They are not quotes. A real design needs your consumption, roof orientation and shading.

Element	Indicative figure	Notes
System size	4 to 8 kW	Sized to in-season daytime load, not annual average
Panels	10 to 20	25 to 55 square metres of usable roof
Battery	5 to 10 kWh	Usually justified on a let, see below
Total installed	£7,000 to £16,000	Array plus battery, MCS-certified
Annual generation	3,600 to 7,600 kWh	Depends on orientation and shading
CO2 saved per year	1 to 2 tonnes
Indicative payback	7 to 11 years	Hot tub and EV charging shorten it

For a premium lodge the range rises to £9,000 to £20,000, and a small self-catering park runs £22,000 to £70,000 site-wide. You can compare all four property types on our cost guide or the main solar panels for holiday lets page.

Stat callout: Cost per kW falls as systems grow. A single-cottage array sits near the top of the domestic range, while a small park spreading the same fixed costs (scaffolding, inverter, labour, DNO work) across 15 to 50 kW lands closer to £900 to £1,400 per kW.

The four things that move the price

1. The hot tub

The hot tub is the swing factor in holiday-let solar economics. A cottage without one looks like a modest domestic system on a longer payback. A domestic hot tub kept hot and filtered for back-to-back guests draws a 2 to 3 kW heater, often the single biggest load on the property. Add that season-long draw plus a battery to time-shift it, and self-consumption rises sharply, pulling the payback in. So counterintuitively, the cottage with the higher energy bill often has the better payback, because there is more expensive grid import for the solar to displace.

2. Your heating fuel

Many cottages, particularly converted barns and coastal properties, sit off the gas grid on oil, LPG or electric heating, where the unit cost of energy is higher. That raises the value of every kilowatt-hour you self-consume rather than import, and shortens the payback compared with an on-gas property. If your hot water and heating are electric, more of the bill is in solar’s reach.

3. Whether you fit a battery

A battery adds cost but, on a holiday let, usually earns it back. The loads that define a let, the hot tub, evening hot-water re-heat and evening guest EV charging, largely fall outside peak sun. A battery that stores midday generation and releases it after dark is where much of the return comes from. We cover the trade-off in detail in our battery versus no battery guide, and model the payback with and without so you can see the difference.

4. Roof, access and grid

Scaffolding, roof type, whether the array needs a G98 notification or a full G99 application to the DNO, and the state of your existing consumer unit all move the final figure. Rural and coastal lets are often on capacity-constrained networks, so grid connection is checked early. A single small array (3.68 kW or less per phase) notifies under G98; larger arrays and battery-plus-EV systems need a G99 application before connection. A coastal cottage may also warrant a salt-resistant specification on the mounting and cabling, which is worth building into the quote from the start rather than replacing corroded fixings later.

The reliefs and income that offset the cost

Smart Export Guarantee. MCS-certified systems earn an export tariff, indicatively 4 to 15p per kWh in 2026, supplier-set. A holiday let exports meaningfully in the quiet off-season, so this is worth having. See the Smart Export Guarantee detail on Ofgem.

0% VAT to 31 March 2027. Qualifying domestic-scale solar and battery attract 0% VAT in Great Britain until 31 March 2027, per the gov.uk energy-saving materials guidance. Caveat: this is a residential relief, and its application to a property run purely as a commercial let is not clear-cut. Confirm your position and take your own tax advice before relying on it.

Stat callout: Because the relief is worth 20% of the install, a £12,000 cottage system priced at 0% VAT rather than standard-rated saves roughly £2,000 against the same job after the relief window closes on 31 March 2027 (Source: gov.uk VAT guidance).

The tax position changed in April 2025 (take your own tax advice)

The Furnished Holiday Lettings tax regime, which let holiday lets claim capital allowances including the Annual Investment Allowance on plant such as solar, was abolished from 6 April 2025 (1 April 2025 for companies). If you hold the property personally, you can no longer write the panels down as plant and machinery. If it is held in a limited company, solar may still be qualifying plant, but that depends on the structure. We are not tax advisers, so take your own tax advice, and see our grants and funding page and gov.uk capital allowances as starting points only.

Will the install disrupt bookings?

A fair worry, because downtime costs a let far more than it costs a home. In practice, roof work is contained and usually done in a changeover gap or your quiet season, so guests are unaffected. The only unavoidable outage is the short final grid connection, a few hours, which we book for an empty period. For a small park we schedule the more disruptive work outside your peak season entirely. Building one changeover slot into the plan is normal, and it is far cheaper than the running-cost saving the system delivers across a season.

A worked example (illustrative, not a quote)

To make the numbers concrete, here is an illustrative model. It is not a real customer and not a quote.

A single coastal self-catering cottage with a hot tub, off the gas grid on electric heating, runs roughly 85% occupancy from April to October. A 6 kW roof array plus a 10 kWh battery, at an indicative install cost near the middle of the range, is modelled to cover most of the in-season daytime hot-tub and hot-water load and time-shift the rest to the evening for back-to-back guests, with off-season surplus exported under the Smart Export Guarantee. Indicative generation is around 5,400 kWh a year, and indicative payback lands near nine years, improving with guest EV charging added. Every figure here is illustrative for scoping, not a fixed quote, and your own roof and consumption move all of them.

How cost varies by property type

• A self-catering cottage is the £7,000 to £16,000 range above.
• A lodge or cabin runs higher per unit because the hot tub works harder and EV charging is often standard.
• A glamping site is priced against a DNO grid extension rather than a grid bill, and off-grid solar-plus-battery often undercuts it, see our off-grid glamping guide.
• A small self-catering park is a site-wide install with a half-hourly meter read.

Frequently asked questions

How much do solar panels cost for a holiday cottage in the UK?

Indicatively £7,000 to £16,000 for a single cottage with a hot tub, covering a 4 to 8 kW array and a 5 to 10 kWh battery. A premium lodge runs £9,000 to £20,000 and a small self-catering park £22,000 to £70,000 site-wide. These are scoping ranges, not quotes, and the real figure depends on your roof, hot tub, heating and whether you add a battery.

Why does a bigger energy bill sometimes mean a better payback?

Because solar displaces expensive grid import. A cottage with a hot tub and electric hot water has more costly import for the array to replace, so more of the bill falls within solar’s reach. A low-consumption cottage generates a surplus it can only export cheaply, which lengthens the payback.

Is there still 0% VAT on solar for a holiday cottage?

Qualifying domestic-scale solar and battery attract 0% VAT in Great Britain to 31 March 2027. It is a residential relief, though, and its application to a property run purely as a commercial let is not clear-cut. Confirm your position and take your own tax advice before relying on it.

Do I need a battery, and how much does it add?

On a hot-tub cottage, usually yes, because the evening hot-tub re-heat and any overnight EV charging fall outside peak sun. A battery typically moves the cottage figure from the lower part of the range toward the middle. We model the payback with and without so you can see the difference.

Costs vary a little by region and roof type, and we quote holiday cottages across the UK, including coastal properties in Whitby and Lyme Regis and Welsh-coast cottages near Tenby.

Is the cost worth it?

For most summer-let cottages, yes, the payback is genuinely good once the hot tub and EV charging are in the mix. We cover the full worth-it question in our companion guide on whether solar panels are worth it for a holiday let.

Related reading: battery versus no battery and EV charging for holiday-let guests.

The only accurate cost is one modelled from your own roof and consumption. Request a free quote and we will size the system to your in-season load and share the figures so you can stress-test them.