Solar PV, battery storage and EV charging for Cardiff homes and businesses, designed and installed by our own MCS-certified teams. We survey the roof, model the return honestly, and tell you if it is not worth doing.
Three services, one accountable team
Every system starts with a site survey of your own roof, consumption and shading, not a template.We install, commission and monitor the whole system ourselves, so there is one number to call afterwards.
Roof-mounted monocrystalline arrays sized to your usage, with hybrid inverters and a design that respects the look of the property.
MCS-certified design and install
2-year workmanship warranty
Store what you generate and buy the rest cheaply overnight. Retrofitted to existing arrays or installed alongside a new system.
Retrofit or new-build compatible
Off-peak tariff scheduling set up for you
App monitoring configured at handover
Home and workplace charge points wired to work with your solar, so the car charges on your own generation where possible.
Solar-aware load balancing
Single or multi-bay commercial installs
DNO notification handled by us
We are certified, insured and accountable for every stage: survey, design, install, commissioning and aftercare. Nothing is subcontracted out to a sales network, so the team that quotes your Cardiff install is the team that carries it out.
Certified for solar PV and battery storage across England and Wales, so your install qualifies for the export tariff.
Government-endorsed quality scheme, with RECC and HIES consumer-code membership behind every contract.
Audited quality, environmental and health-and-safety management, the standards commercial sites ask us for.
From a three-bedroom terrace in Roath to a warehouse roof in Cardiff Bay, surveyed by the same in-house team.
We know the housing stock, the DNO process for South Wales and how conservation areas are handled here.
Monitoring, servicing and fault response handled directly, not passed to a third-party maintenance contract.
Our surveyors, designers and installers are recruited and trained from the areas we serve, creating skilled, long-term jobs close to home.
Unlike many national installers, we never sub the work out to crews driven in from London or Birmingham. Accountability stays local.
A share of what we earn goes to local sponsorships, including our partnership with Cardiff City FC, from grassroots sports teams to community groups near you.
Because our teams are local and directly employed, if you ever need us after your install, the same company and often the same faces come back. No call centres, no chasing a subcontractor.
of our team is based in Wales
Around 90% of our team is based in Wales. We recruit locally, train locally, and are actively building pathways for people coming out of college and university to build long-term careers in renewable energy.
Our Cardiff base covers the city and the surrounding region. If you are just outside these areas, ask. We will tell you honestly whether we can look after you properly.
Base city and the Vale
Gwent
South West
Somerset
Bridgend County
Rhondda Cynon Taf
Merthyr Tydfil
Neath Port Talbot
Neath Port Talbot
West Glamorgan
Carmarthenshire
From individual homes to entire communities, the results are clear: lower energy use, healthier spaces, and long-term change. We do it properly, because when it’s built on trust, it lasts
The whole experience was brilliant and the team's approach involving Wasim, Nick and Danny the electrician was excellent. I would highly recommend Altum to anyone thinking of going solar.
The whole experience was brilliant and the teams approach involving Wasim, Nick, Danny the electrician was excellent. I am very impressed with the experience and would highly recommend Altum to anyone who thinks of going Solar soon.
From the initial consultation through to final sign-off, the team was professional, clear and efficient. The work was carried out to an exceptionally high standard, on time, and with great care taken around the house.
Wasim took time face to face to explain the options and earn our trust. The price compared well with other quotes and Altum did not try to oversell with more panels and bigger batteries than we needed. The personal touch overcame our reservations.
The whole process took only two weeks from consultation to completion: 16 panels, gateway, inverter and battery. From Ash at the door to Wasim's survey, Nicky keeping in touch and Danny the electrician, everyone was friendly, professional and hardworking.
Solar PV design and installation, battery storage (new or retrofitted to an existing array), EV charge points, and ongoing operations and maintenance. We cover both homes and commercial sites across Cardiff and the surrounding area. Government scheme funding is not currently available in Cardiff, so all work here is privately funded or financed.
Yes. We are MCS certified for solar PV and battery storage, and TrustMark registered, with RECC and HIES consumer-code membership. MCS certification applies across England and Wales, and it is what allows your system to be registered for the Smart Export Guarantee.
Yes. Most of our Cardiff installs are solar and battery together, which is usually the cheaper route because both are commissioned in one visit. We also retrofit batteries to arrays we did not install, subject to a survey of the existing inverter.
Yes. Commercial roofs in and around Cardiff often suit larger arrays with a shorter payback than domestic systems, particularly where daytime consumption is high. We handle the DNO application, structural checks and phased installation around your operating hours, and can discuss capex, asset finance or a PPA.
A typical domestic install is one to two days on site, following a survey and design that usually take two to three weeks. Commercial timelines depend on roof size and DNO approval; we give you a dated programme before you commit.
If your question is not here, call the Cardiff office and ask. We would rather talk you out of a bad system than sell you one.
Tell us about the property and we will come back within one working day with a roof review, an honest generation estimate and a written price. No pressure, no false promises, just honest advice.
02922 717777
info@altumorganisation.co.uk
Email: info@altumorganisation.co.uk
Phone: +44 29 2271 7777
Text us: +44 7727 262608 (for quick enquiries)
Park House, Suite 4, Floor 2, Greyfriars Road, CF10 3AF
Office Hours: Mon–Fri, 9:00–17:00
