Property and authority
- Confirm whether you are the owner, an authorised representative, a community representative, a tenant or researching before purchase.
- Identify any shared roof, community-of-owners decision or access restriction.
- Note known planning, protected-property or community constraints without assuming their effect.
Electricity information
- Prepare 12 months of electricity bills where available.
- Download interval data from the distributor or supplier account where available.
- Note full-time, seasonal, rental or currently unoccupied use.
- List loads that continue while the property is empty, such as refrigeration, security, internet, gates and pool filtration.
Roof and access
- Record roof type, approximate age and known condition.
- Note usable sections, orientation, shade, chimneys, trees, terraces and neighbouring buildings.
- Identify access constraints, likely cable routes and possible inverter or battery positions.
- Prepare non-sensitive roof and equipment photographs if safe to take; do not climb onto the roof.
Large and future loads
- List pool pumps, filtration schedules and any pool heater.
- List air-conditioning, electric hot water and other significant electrical loads.
- Note any planned EV charger, heat pump or aerothermal system.
- Record which loads tend to run at the same time.
Existing equipment and backup
- Record existing panel, inverter, battery and monitoring makes/models where known.
- Note whether the property has reliable internet for connected monitoring.
- If backup is wanted, list essential circuits such as refrigeration, lights, internet, gates or selected sockets.
- Keep broader whole-property backup separate from essential-circuit backup when asking questions.
Questions to ask before installation
- Which panel, inverter and battery models are proposed, and why?
- What roof mounting, access, electrical work and exclusions are included?
- Which production assumptions, losses and occupancy pattern were used?
- Who is responsible for municipal steps, electrical documentation and legalisation?
- What monitoring, workmanship warranty, product warranty and aftercare route applies?
- Who supports the system if the original installer is no longer available?
Documents to prepare
- Bills and interval data, where available.
- Non-sensitive roof and equipment photos.
- Existing equipment model information and monitoring screenshots.
- Community or property documents only when the installation team explains why they are needed and how they will be handled.