Which Energy Upgrade First?

Fabric first

Insulation and draughts.

Heating

Heat pump if suitable.

Generation

Solar and battery.

Why the order matters

Reducing heat loss first means any new heating system can be smaller and run at lower temperatures. A heat pump sized for a draughty, uninsulated house may be larger than needed once the loft and walls are improved. Solar and batteries are less dependent on the fabric, so they can be installed at any point, and sharing scaffolding with roof or window work keeps disruption down.

A sensible sequence

Typically: draught-proofing and loft insulation; wall and floor insulation where suitable; windows and doors; heating controls; then a heat pump if the home suits one. Solar panels and a battery can be added before, during or after, depending on your roof and budget.

Planning ahead

If you expect to add a heat pump or electric car later, mention it at your solar survey so the inverter, battery and consumer unit can be planned with that in mind.

Scottish housing and heat loss

Scotland's homes include solid sandstone and granite tenements, rubble-built cottages, interwar cavity-wall houses, post-war no-fines concrete and timber-framed homes, and modern estates. Each loses heat differently. Solid stone walls need breathable approaches, often internal insulation with care around damp. Cavity walls can often be filled, though driving rain on exposed west-facing elevations needs to be considered. Timber kit homes usually benefit most from loft top-ups and draught-proofing.

Windows and doors are a large share of heat loss in older homes, especially original single-glazed sash and case windows. Conservation areas and listed buildings in places such as Edinburgh New Town, Stirling and many town centres have rules about what can be changed, so check with your council before ordering replacements.

How our survey works

Every project starts with a no-obligation survey. We look at your roof orientation, pitch, shading and condition, your fuse board and meter position, where a battery or inverter could go, and how your household uses electricity through the day and across the Scottish seasons. You then receive a written quote showing the equipment, the expected generation for your roof and the full price, so you can compare it fairly. We handle the network connection paperwork with your local distribution network operator, which is SP Energy Networks in central and southern Scotland and SSEN in the north, Highlands and islands. We install through MCS-certified partners. Solar panels and batteries are 0% VAT until March 2027. Finance available, subject to status.

Related guides

• Scotland Home Energy Guide
• Where Scottish Homes Lose Heat
• Insulation Scotland: Loft Insulation Installation