Solar for Shops and Offices — Match Power to Your Working Day
A busy shop may open its doors before breakfast and stay bright well into the evening. An office might run five days a week, with most equipment switched off on Saturday and Sunday. Both need electricity, but the same solar proposal will not automatically suit them. A useful plan starts with the way your workplace actually runs.
This guide explains how to prepare for solar when you operate a shop, showroom, small office or shared workplace in Thailand. You can use it to organise information before asking for an assessment. You do not need technical drawings to start. A few electricity bills, a simple working schedule and clear questions can make the first discussion much more useful.
Start with your opening hours
Write down when the first person arrives, when customers enter and when the last person leaves. Include work that happens behind closed doors, such as cleaning, stocking shelves and preparing food. These activities can use electricity before the public opening time. An office that starts cooling rooms early has a different pattern from one where people arrive gradually through the morning.
Then add weekends and holidays. A closed office may still power a server, security cameras, a fridge and network equipment, but these small continuing loads are different from a full working day. Tell the assessor about both patterns. A solar design should be checked against quiet days as well as busy ones, especially if your business closes for several days at a time.
Separate cooling from the rest of the workplace
Air conditioning can be a visible part of shop and office electricity use. Record which areas are cooled, the hours they operate and whether doors are often open. A small reception area with regular visitors may behave differently from a meeting room used twice a week. These details help explain the bill without assuming that every air conditioner runs all day.
Also note equipment that continues independently of cooling. Shops may have refrigerated displays, signs, tills and storage rooms. Offices may have computers, printers and a small kitchen. The aim is to build a realistic picture of daily use, rather than collect a long list of appliance ratings. For a broader introduction, read our business solar planning guide.
Use bills to check the business pattern
Gather bills from different parts of the year, ideally covering a full year of normal activity. Mark months when the business was closed, equipment changed or an unusually large order kept staff working late. A bill shows total energy for a period. It does not always reveal which hours created that total, so your own notes still have an important role.
If you have access to meter records showing use throughout the day, ask whether those records can be included in the assessment. Avoid guessing an hourly pattern from the monthly total alone. If several businesses share one meter, explain the arrangement clearly. You need to know whose electricity the proposed system would serve and how its results would be understood.
Match daylight production to normal work
Solar electricity is produced during daylight, while the amount changes with weather, shade and the time of day. A workplace that uses power during those hours may have a useful overlap. That overlap needs to be checked for your property. It is not enough to say that a shop opens every day or that an office has a large monthly bill.
Consider a showroom that is quiet until late afternoon. Its lights and cooling may rise as solar output is falling. A morning office could have a different balance. These are planning examples, not predictions for your building. Contact SolarSunThai with your opening schedule and ask what information is needed to compare your working day with possible solar production.
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Check who controls the roof
Many shops and offices occupy leased space. Before comparing equipment, establish who owns the roof and who can approve changes. A ground floor tenant may not control the roof of a building above several other tenants. A lease may also end before the expected life of the solar equipment. These matters deserve a clear written discussion with the property owner.
Explain any planned move, lease renewal or roof repair. Ask who would manage access, who would be responsible for agreed maintenance and what would happen if the premises changed hands. An assessor can review technical suitability, but the business and property owner still need to agree their responsibilities. Sorting out permission early can prevent an attractive proposal from becoming an impractical project.
Keep roof space and customer access practical
A roof may already support signs, water tanks, air conditioning equipment or access routes. Tell the assessor about them and any plans to add more. The usable area for panels can be smaller than the outline of the building suggests. Shading from nearby buildings can also change through the day, particularly along a busy street with buildings of different heights.
Think about how work could take place around staff, deliveries and customers. A useful proposal should explain access arrangements and expected disruption in terms you understand. Do not climb onto the roof to gather information. Safe ground level photographs and existing building records are a helpful start. Our solar services page provides another place to explore the assessment process.
Plan for changes in the business
Your current bill may not describe next year’s workplace. A new cold room, extra staff, longer opening hours or a move to more efficient cooling can all change electricity use. Separate changes that are already agreed from ideas that remain uncertain. This helps an assessor show a practical current case and discuss a future case without treating every possibility as certain.
Ask how the proposal deals with expansion and what would need another review. Extra roof space does not by itself mean that more panels can simply be added later. Equipment compatibility, electrical capacity and the overall design still matter. A clear explanation of these limits is more useful than a vague promise that a system will always grow with the business.
Give batteries a specific business purpose
A battery should answer a defined need. Perhaps you want to explore using some daytime solar electricity later, or understand whether certain essential equipment could have backup power. Those are different questions. Make a short list of the equipment and the hours that matter, rather than asking for a battery to support everything in the building without a clear boundary.
Ordinary solar panels do not by themselves guarantee power during a grid outage. Backup depends on a suitable system design and the equipment included. Ask which circuits, power levels and operating times would be covered in a proposed arrangement. Ask SolarSunThai to review your workplace goals before you make battery size the starting point of your budget.
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Compare proposals using the same business information
Give each proposal the same bills, opening hours and plans for equipment changes. Ask for the assumptions behind the expected energy production and the amount likely to be used on site. A larger panel total can look impressive, but it should still fit normal business demand and the available roof. Review what is included in the work and what remains outside the stated scope.
Check how results will be monitored after installation and who will explain the first reports. Staff need to understand the difference between electricity produced by solar and the full building bill. The US Department of Energy explanation of rooftop potential describes how roof size, shading, direction and location affect suitability. Local assessment remains essential for your own property in Thailand.
Prepare a clear first enquiry
Your enquiry can be simple. Include the property location, type of business, normal opening days, approximate staff numbers and whether the premises are owned or rented. Add recent bills and explain any planned changes. Photographs of the building and a safe view of the roof can help the discussion, but they do not replace a proper assessment of the structure and electrical system.
Decide what you want the first answer to resolve. It might be whether the roof is worth investigating, what extra records are needed, or how to compare two sensible system sizes. Send your shop or office enquiry to SolarSunThai. A focused starting point helps turn a general interest in solar into a practical discussion about your working day.
Keep exploring your solar options
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Browse all SolarSunThai blog posts for more guides in English and Thai.
Start with a clear conversation.
Check the quiet hours as well as the busy hours
Map preparation, opening, cleaning and closing periods for a representative week. A shop may use electricity before customers arrive, while an office may have equipment running after staff leave. Mark those periods separately from the busiest trading hours. Include weekends and any regular closure so the assessment does not assume the building follows the same demand pattern every day. Where available, meter information can help test the schedule.
Then identify practical installation restrictions. Tell the team about customer entrances, deliveries, shared areas and any time when power isolation would disrupt essential work. Nominate the person who can coordinate access and answer questions about the premises. Ask for those arrangements to be included in the work plan rather than left until equipment arrives. This gives the proposal a clearer operational scope and helps the business compare the value of the complete installation, including coordination and handover, alongside the advertised system capacity.
Tell SolarSunThai about your property and what you want solar to do. Complete the Contact Us form to ask a question or request an assessment. English: Joe +66843200279. Thai: +66847561520. Email: info@solarsunthai.com.