FAQs

Everything businesses ask us, in one place.

The questions below come from real enquiries. Each section links to the page that goes deeper — and if your question isn't here, the team answers within 24 hours.

Design & installation

How long does it take to install a commercial solar system?

Dependent on system size, Novalux can install your solar PV system from 8 weeks of order. A typical commercial battery retrofit installs in around 2 weeks. Before contracts are signed you get a detailed breakdown of each project stage with indicative timelines.

What size system do I need?

The size depends on your energy consumption, available roof space and budget. We perform a detailed analysis that finds the best return on investment — best payback, not biggest install.

Can solar panels be installed on any type of roof?

Most roof types are suitable, depending on condition, angle and orientation. Roofs with asbestos can still take solar PV, assessed case by case. Where the roof is the constraint, ground-mounted systems free the design from the building entirely.

Do you use subcontractors?

No — design, installation and maintenance are all done by our own in-house, MCS-accredited team, with NAPIT and RECC registration.

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Payback & cost

What is the payback period for commercial solar?

Solar-plus-battery systems typically pay back in 2–5 years, after which the electricity generated is essentially free. Solar-only systems run longer. Your Quick Quote includes the payback figures for your site, modelled on your real consumption.

What do commercial solar panels cost?

As a guide from our real quotes: a 50kWp system runs roughly £47,500–£66,000 and a 1MWp system £440,000–£615,000, ex VAT. The cost calculator gives a budget range for your size in seconds.

Are there grants for commercial solar?

No live UK-wide grant, but the tax picture is strong: 100% year-one relief on up to £1m via the Annual Investment Allowance, and the equipment is exempt from business rates until 2035. Welsh farms can access 3% fixed-rate loans. See the grants page for every live scheme with sources.

Can I install solar with no upfront cost?

Yes — Power Purchase Agreements, rental and hire purchase up to 10 years all run with £0 upfront. Under a PPA the provider owns, maintains and insures the system and you just buy the power at an agreed rate.

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Batteries & Nova AI

Can I add a battery to my existing solar system?

Yes. AC-coupled systems add a battery to almost any existing installation without replacing your panels or inverter. We size storage to your generation profile and how your site actually uses power.

What does Nova AI actually do?

Every 30 minutes it makes the call for your battery — buy grid energy while it’s cheap, use your generation on site, store it, or sell it against live tariffs and grid signals. Peak shaving, load shifting and grid-services revenue, with nobody watching a dashboard.

What size battery do I need?

It depends on your half-hourly consumption, your generation profile and your tariff. We model all three and quote the battery size with the fastest payback, alongside 25-year cashflow and NPV for each option.

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Grid & off-grid

Can a site really run without any grid connection?

Yes. Solar generates through the day, the battery carries evenings and overnight loads, and a backup generator covers extended dull periods — all sized from your half-hourly consumption so the site stays powered year-round.

Our grid connection is too small — what are the options?

Hybrid mode: your limited supply covers baseload while solar and storage carry the peaks. Connection upgrades are commonly quoted in years; an off-grid or hybrid system is typically designed, consented and installed within months.

What if I don't have 3-phase electricity?

Solar PV can be installed off-grid as a standalone system, with a battery to maximise power usage — or we can support a supply upgrade as part of the project.

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Aftercare

How much maintenance do solar panels need?

Minimal but not zero — periodic cleaning and inspection keep output at design level, and many insurers now expect evidence of routine maintenance. Novalux packages cover cleaning, drone surveys and annual servicing.

What happens after installation?

Every system we build joins the fleet we monitor and maintain — around 50 commercial systems and counting. Underperformance is flagged automatically against the design baseline, not discovered at the annual visit.

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Ask us the question that isn't here.

Send your site details and whatever you want to know — a real answer, and a Quick Quote if you want one, within 24 hours.

quick quote in 24hrs · full proposal within 5 days of survey

We call to confirm your setup before the numbers go out.

or call 01600 213 213