Commercial size

50kW commercial solar panel system 50kW 95 to 110 panels for a mid-size commercial site, generating around 42,500 kWh a year.

Sized for mid-size SMEs, hospitality, care homes and retail units with annual demand of 40,000 to 60,000 kWh. For care homes and hotels with significant overnight load, battery storage often forms part of the design from day one.

95-110Solar panels
42,500 kWhGenerated a year
220-280 m²Roof space
80-95%Self-consumption

Illustrative only. Your free assessment confirms the exact figures for your building.

A 50kW Solar4Good commercial solar system: inverter and solar panels50kW · 95-110 panels
01
The right fit

Why a 50kW system could be the right fit

A 50kW commercial solar system is sized for mid-size SMEs and operationally diverse businesses, from small-to-mid hotels, restaurants and retail units to care homes and small manufacturing operations. It uses 95 to 110 panels across 220 to 280 square metres of roof and suits businesses with annual electricity demand of 40,000 to 60,000 kWh.

For care homes and hotels with significant overnight load, battery storage typically forms part of the design from day one. The system is eligible for the Annual Investment Allowance, business rates exemption to April 2035 and 20% reclaimable VAT, and all paperwork and grid approvals are handled end to end by Solar4Good on your behalf.

The datasheet
50kW spec sheet

Indicative figures for a 50kW commercial system on a typical UK site. Your exact output depends on your roof, orientation, shading and usage, confirmed in a site visit.

System size50 kW DC
Solar panels95-110
Roof space220-280 m²
Site demand40,000-60,000
Annual output42,500
Self-consumption80-95%
VAT20% reclaimable
Capital allowanceAIA-eligible
Business ratesExempt to 2035
Panel warranty25 yrs

Indicative, not a quote · final figures after a free roof assessment.

What is included
95-110 tier-one panels
High-efficiency panels, sized to deliver 50 kW DC across your commercial roof.
Commercial inverter (three-phase)
A quality inverter, three-phase ready, with capacity for battery and peak-shaving.
Mounting, wiring & connection
All roof mounting, cabling and grid connection, done neatly and safely.
Commercial monitoring dashboard
Live generation and consumption data for your facilities team, set up before we leave.
Full MCS install + AIA guidance
Fitted under our own MCS registration, with AIA capital-allowance guidance for your accountant.
25-year panel warranty
Plus a team you can still call after switch-on. Every job certified under our own MCS registration.
On real UK rooftops

Sized for your building, fitted under our own MCS registration

Every 50kW system is designed around your site’s demand profile and usage, then installed by the same MCS-certified team that assessed it. Certified under our own MCS registration, no remote sales centre, 3,000+ UK homes and counting.

Storage
50kW: self-consumption and battery
Panels only
Good if you use power in the day
The panels power the site during working hours and export the surplus for a payment under SEG. Ideal if your demand is daytime: production, refrigeration, machinery or EV charging while the sun is up.
Panels + battery
The most common upgrade
Battery storage shifts daytime solar into evening, out-of-hours and peak-rate periods, lifting self-consumption further and cutting demand charges. Sized to your load profile during the design stage.
02
The right size?

Is 50kW enough for your site?

For businesses using 40,000 to 60,000 kWh a year, a 50kW system covers a large share of daytime demand, and for hospitality and care operations a battery extends that into the evening and overnight.

If your demand is lower a 40kW system may suit; if higher, look at 70kW or above. We size precisely from 12 months of your meter data rather than a template, and design in battery storage and commercial EV charging where they strengthen the case.

Proof at this scale
Recent commercial installs

We design and install commercial systems across the UK, certified under our own MCS registration. A few recent examples near this scale:

Not sure on size?
Size it to your demand

Pick your rough annual electricity use for a starting point, then compare the commercial sizes below. We size precisely from 12 months of your meter data in a site visit.

Annual use

Larger sites? We install commercial systems up to 150kW and beyond.

How it works
Go commercial solar in three steps
STEP 01
Site visit + structural assessment
A local engineer visits, assesses your roof for pitch, orientation and shading, and designs a 50kW system around your actual demand profile. No cost, no obligation.
STEP 02
Fixed-price commercial proposal
A clear, itemised commercial proposal with AIA modelling guidance for your accountant. We handle all paperwork and grid approvals as standard.
STEP 03
Installation & commissioning
Our in-house team completes installation in one to three weeks on site. Tested, MCS-certified and the commercial monitoring dashboard set up before we leave.
Why Solar4Good
Engineer-led, in-house, UK-wide

You work with a UK-wide commercial team based in Harrow, not a remote sales centre. The person who assesses your roof is directly involved in designing the system, and once it is in we handle MCS certification, SEG export-tariff setup and your monitoring app, so you are never left navigating the process alone.

3,000+UK installs
50,000+Panels installed
4.9★from 1,000+ reviews
MCSCertified, in-house
The kit we fit
The panels and batteries we install

Tesla Powerwall, SigEnergy and Fox ESS. We fit trusted, tier-one panels and batteries built to perform in British weather.

TeslaSigEnergyFox ESSAlpha ESSAIKODMEGCTeslaSigEnergyFox ESSAlpha ESSAIKODMEGC

Rated 4.9/5 from 1,000+ verified reviews on Trustpilot, TrustATrader and Google

“George the sales chap was straightforward and honest, and the whole installation team were awesome, courteous and professional throughout.”

Jamie Wilson · Verified Trustpilot review

“From start to finish the whole job has been seamless. The install guys were polite, knowledgeable and efficient.”

Timothy Clarke · Verified Trustpilot review

“I wholeheartedly recommend this company for solar and battery storage installation.”

Soham Acharya · Verified Trustpilot review
Good to know

The questions businesses actually ask about a 50kW commercial solar system.

Is a 50kW system right for a mid-size business?

A 50kW system suits mid-size SMEs and operationally diverse businesses, from small-to-mid hotels, restaurants and retail units to care homes, with annual demand of 40,000 to 60,000 kWh. For sites with overnight load, a battery is usually designed in from day one.

How many panels are needed for 50kW?

95 to 110 panels across roughly 220 to 280 square metres of roof, sized to deliver 50 kW DC. They fit most mid-size commercial roofs, including corrugated metal, concrete and slate-tile buildings.

What is the business case for commercial solar?

Commercial solar is eligible for the Annual Investment Allowance, business rates exemption to April 2035, and 20% reclaimable VAT. With high daytime self-consumption, payback is typically faster than an equivalent residential system.

Do you carry out a structural assessment?

Yes. Every commercial project starts with a site visit and structural assessment. A qualified engineer reviews roof type and load capacity and, where available, 12 months of half-hourly meter data to design around your actual demand.

Who installs it, and do you handle the paperwork?

Most installations are carried out under our own MCS registration. Further afield we use installers working under our MCS registration, and the certificate and workmanship warranty remain ours. We handle all paperwork, grid approvals, MCS certification and AIA modelling guidance for your accountant.

Related reading
Go deeper on commercial solar

Guides from our engineers on the commercial business case, batteries, EV charging and export.

A galvanised cable tray on a commercial flat roof carrying bundled DC cabling, with the edge of a ballasted solar array behind
Free 50kW assessment

Book a free consultation for a 50kW commercial system

Start with a site visit, structural assessment and a fixed-price commercial proposal from our MCS-registered installers. No cost, no obligation, response within 24 hours.

Get a quote