Meet Ian Hewson

Helping people create homes that will stand on their own two feet

Independent Whole-House Energy Strategy Consultant

Experience That Shapes

Every Project

More than twenty years helping people create resilient, future-ready homes.

20+

Years in renewable energy and whole-house design

120+

Real homes and energy systems delivered

120+

Monitored systems informing design decisions

Nationally Recognised

Projects featured by BBC, The Guardian & Victron Energy

Independent

Whole-house strategy without product or installer bias

Creator of HEM

House Energy Modelling for comparing design choices before construction

Every Home Begins With An Idea ..

Working on pioneering projects such as the Active Classroom fundamentally changed the way I think about designing homes.

Every project I work on starts in much the same way.

Not with solar panels.
Not with batteries.
Not with heat pumps.

It starts with a conversation.

Usually around a kitchen table. Sometimes standing in an empty field. Sometimes looking at an old barn and imagining what it could become.

That early stage matters, because every major decision is still open. The building fabric, heating, electrical design, renewable energy system, battery storage and backup strategy can still be shaped into one complete system.

That is where the greatest value is created.

The Beginning

Parc Bach Farm off-grid renewable energy project in the Black Mountains, Wales

Parc Bach Farm — a remote Black Mountains hill farm where an off-grid energy system and automated backup replaced daily diesel generator use, achieving 87% renewable operation.

“Silence has returned and this is probably my favourite aspect of the project.”

Deborah & Phil, Parc Bach Farm

Parc Bach Farm

It all began with a remote hill farm in the Black Mountains.

Parc Bach Farm sits around 1,500 feet above sea level in the Brecon Beacons National Park. The owners had been quoted £142,000 for a mains electricity connection and £42,000 for a phone line, leaving them entirely dependent on an 11 kW diesel generator.

The generator ran for four to five hours a day, using around 4.5 litres of diesel daily. It was noisy, expensive and limiting. They could not run a fridge or freezer full-time, internet was only available when the generator was running, and the isolation of the site was made worse by the lack of reliable power and communication.

At the time, most people would have seen that as an impossible site.

I saw it as a design problem.

Working with Ecolek Wales, we developed an integrated off-grid energy strategy using solar PV, lithium battery storage, automated generator backup, immersion diversion, remote monitoring and a winter optimisation setting.

The system transformed daily life at the farm. Silence returned, the generator stopped being part of everyday living, and the home achieved 87% renewable operation.

That project changed the direction of my work. It showed me that the best energy strategies are not about installing isolated technologies — they are about understanding the whole home, the people living in it and the conditions the system has to survive.

Turning research into real homes

Returning to Parc Bach Farm with a practical renewable energy strategy confirmed something I had started to believe.

Good design does not begin with products.
It begins by asking better questions.

The completed project went on to receive national recognition for energy efficiency, but the real reward was seeing a family living in a home that no longer relied entirely on a diesel generator.

That experience has stayed with me throughout my career.

Ian Hewson receiving a Welsh energy efficiency award for the Parc Bach Farm off-grid project

Receiving the Welsh Energy Efficiency Award for Parc Bach Farm after demonstrating a practical whole-house renewable energy strategy.

Ian Hewson with the SPECIFIC Active Classroom project team at the Constructing Excellence Wales Awards 2017

Working alongside the SPECIFIC research team on the Active Classroom — one of the UK’s pioneering energy-positive buildings.

LEARNING FROM PIONEERS

Working on Parc Bach Farm led to opportunities on some of the UK’s most forward-thinking low-energy buildings.

I was fortunate to work alongside architects, engineers and research teams on pioneering projects including SOLCER House and the Active Classroom.

Those projects exposed me to building research, emerging renewable technologies and a completely different way of thinking about energy.

Instead of treating heating, insulation, renewable generation and electrical systems as separate disciplines, they were designed together as one integrated system.

That philosophy still shapes the way I approach every project today.

What this means for your project

When I work with a client today, I am not simply looking at how many solar panels or batteries can be fitted.

I look at the whole home — the building fabric, heating demand, hot water, electrical loads, renewable generation, battery storage, backup power, controls and how the house will actually be lived in.

The aim is to make better decisions before the expensive parts of the build are fixed.

Whole-house energy strategy journey from initial idea through design and construction to completed home
Whole-house energy strategy journey from initial idea through design and construction to completed home

Feasibility Review

Understand whether your site, plans and energy goals are realistic before committing to a direction.

Whole-House Energy Strategy

Compare the building, heating, renewable energy, battery and backup options as one complete system.

Technical Guidance

Support through the build so the strategy is understood by designers, trades and installers.

START THE CONVERSATION

If you are planning a rural, self-build or off-grid home, send a brief outline of your project and what you’d like to achieve.

I personally review every enquiry and take on a limited number of projects each year.