How many days does surveying a solar power plant take? Five stage-by-stage guidelines

Table of contents

• The number of days for surveying a solar power plant is not determined by on-site work alone

• Guideline 1: Preliminary checks and organizing the survey plan — 1 to 3 days

• Guideline 2: Site reconnaissance and control point verification — half a day to 2 days

• Guideline 3: As‑is survey and terrain assessment — 1 to 5 days

• Guideline 4: Boundary confirmation and stakeholder coordination — several days to several weeks

• Guideline 5: Drafting drawings and compiling deliverables — 2 to 7 days

• Common traits of sites where survey days tend to extend

• How to shorten the schedule without sacrificing accuracy

• Summary

The number of days for surveying a solar power plant is not determined by on-site work alone

When you want to know how many days a survey for a solar power plant will take, many practitioners first focus on how many days of on-site work there will be. Indeed, the number of on-site days directly affects the project schedule, but in reality the overall duration is not decided by that alone. If you don’t account for collecting documents, confirming site conditions, sorting out boundary issues, and preparing drawings and compiling deliverables after the survey, you are likely to see mismatches with the actual schedule.

In particular, planned sites for solar power plants are not always flat reclaimed land. There are varied surveying conditions such as sloping terrain, land with thick brush, narrow existing access roads, or places where boundaries with adjacent land are unclear. Because of that, the required number of days can vary greatly between sites even with the same area. On small sites with good conditions the work can proceed quickly, but on large sites with significant terrain changes it is not uncommon for more days than anticipated to be needed.

Also in practice, more time is often spent on the arrangements before and after the survey than on the survey itself. For example, if old drawings differ from the current situation, rechecking is necessary, and if the positions of boundary markers are unclear, confirming them with stakeholders takes time. In other words, when considering the number of days for surveying a solar power plant, it is important to separate the time for on-site work, time for coordination, and time for deliverable preparation. In this article, to make it easier for practitioners to think through it, the process is divided into five stages, and for each stage we outline approximate days and the reasons days may increase or decrease.

Guideline 1: Preliminary checks and organizing the survey plan — 1 to 3 days

For the initial stage of preliminary checks and organizing the survey plan, it is practical to allow roughly 1 to 3 days. The days referred to here are the actual days the responsible person spends working, and do not mean three consecutive days. If documents are well prepared, this can be completed in half a day to one day, but if information about the planned site is scattered and you need to reconcile drawings and land information, it can take several days.

The important point in this stage is to clarify what will be measured. Even within solar power plant surveys, the required workload differs depending on whether the goal is an initial rough assessment for early development, creating an as‑built drawing for design, including boundary confirmation, or obtaining the accuracy required for laying out positions prior to construction. If this is left vague, you may not collect enough points on site, or you may measure unnecessarily wide areas, leading to re-surveying later.

Furthermore, preliminary checks should consider not only site area but also access routes for delivery, whether work vehicles can enter, the ease of line-of-sight, and the density of trees and grass. If you cannot visualize site conditions, estimates of on-site days will be off. Particularly for projects that include forested or sloped areas, movement time is often longer than what appears on maps, and the area you can realistically survey in a single day can vary significantly.

In practice, collecting maps, existing drawings, land documents, and a draft layout all at once during the preliminary phase contributes to shortening the overall schedule. If information is provided later, the surveying company must rework the plan and the on-site arrangements change. As a result, waiting time can increase more than the actual survey time. To estimate survey days for a solar power plant correctly, it is important not to underestimate this initial organizing stage.

Guideline 2: Site reconnaissance and control point verification — half a day to 2 days

The next stage, site reconnaissance and control point verification, is typically about half a day to 2 days. Small, accessible sites can sometimes be handled in half a day, but if the planned site is divided into multiple parcels or has significant elevation differences, it can take one to two days. This stage is important for understanding actual site conditions before the main survey.

During site reconnaissance, confirm whether the information on drawings matches reality. Check road widths, entrance locations, presence of slopes or retaining walls, locations of waterways and existing structures, and vegetation conditions, and use this information to decide what equipment to use and where to base measurements. If this check is insufficient, equipment placement on the day of fieldwork may not go smoothly, or the effort required may increase if line-of-sight cannot be established as assumed.

Control point confirmation also easily affects the number of days. Whether known control points can be used or new ones must be established changes subsequent surveying efficiency. Depending on the surrounding environment, satellite reception conditions and line-of-sight can vary, so it is necessary to determine on site which method is appropriate. Since solar power plant sites are wide and the openness of the sky and sight lines differ by location, walking the entire site to make a judgment is indispensable.

Also important in this stage is confirming safety. Checking whether slopes are muddy, whether heavy machinery may enter, and whether there are hazardous spots along access routes reduces the risk of work interruptions later. Omitting or rushing site reconnaissance can lead to unexpected obstacles on the survey day, ultimately extending the total number of days. The half a day to 2 days guideline should be understood not merely as time for walking the site, but as preparation time to ensure the main work proceeds reliably.

Guideline 3: As‑is survey and terrain assessment — 1 to 5 days

The core of a solar power plant survey—the as‑is survey and terrain assessment—typically takes about 1 to 5 days. If the site is relatively simple, flat, and has few obstacles, it may be completed in 1 to 2 days, but if the area is large, slopes are steep, or trees and structures are numerous, plan for 3 to 5 days. This stage shows the greatest variance in required days.

In the as‑is survey, you collect not only site boundaries but also changes in ground elevation, existing roads, waterways, slopes, structures, tree outlines, and elements that affect use restrictions. For solar power plants, because panel layout, racking plans, the need for earthworks, drainage planning, and delivery routes are affected, simply capturing shapes is insufficient. You must measure with awareness of what information is necessary for design decisions. Thus, the more survey points required at a site, the more days of work will naturally increase.

For projects involving earthworks, the accuracy of elevation measurement is especially important. In terrain where ridges and valleys are complexly interwoven, coarse measurement methods can lead to errors in earthwork volume calculations and drainage slope assessments. That then requires supplementary surveys or revisits in later stages, increasing the overall time. If you capture terrain at the density needed from the start, on‑site days may be somewhat higher but overall project efficiency can improve.

Also, days for the as‑is survey are affected by movement efficiency. On flat ground, you can cover a large area in a single day, but on slopes or in brush, more time can be spent moving and securing positions than on actual measurement. Weather cannot be ignored either. After rain, poor footing, reduced visibility, or unstable instrument setup conditions can slow progress even for the same area. Therefore, when estimating days in practice, always consider area together with terrain and working environment.

The as‑is survey impacts design quality more than its apparent workload suggests. If the information obtained here is insufficient, iteration is likely in layout, earthworks, drainage, and construction planning. Do not simply reduce survey range or point density to make days look shorter; securing the necessary and sufficient information for the purpose will ultimately shorten the overall process. The 1 to 5 day guideline reflects these differences in site conditions.

Guideline 4: Boundary confirmation and stakeholder coordination — several days to several weeks

The most difficult-to-predict part of surveying a solar power plant is the time required for boundary confirmation and stakeholder coordination. While the work itself might take half a day to a few days, the actual total period can extend from several days to several weeks. The reason is clear: this stage cannot be completed by surveying techniques alone and requires coordination with landowners, adjacent landholders, and other stakeholders.

If boundary markers are clear and the field matches the drawings, the process moves relatively quickly. However, if old stakes are hard to find, buried in grass or soil, there are discrepancies between past documents and current conditions, or recognition with adjacent landowners is ambiguous, one field check may not be sufficient. In such cases, it is often the waiting for rechecks or scheduling joint inspections that lengthens the total period more than the surveying days themselves.

Delays in boundary confirmation for solar power plant projects can directly affect design and the start of construction. Because panel layout, fence plans, and earthwork boundaries are closely tied to site boundaries, proceeding with ambiguous boundaries can reveal encroachment risks later. Then design revisions and stakeholder explanations become necessary, causing losses that exceed the surveying effort. That is why it is important to begin boundary confirmation early and run it in parallel with the overall surveying process.

Also easy for practitioners to overlook is that boundary confirmation includes not only the on-site confirmation time but also unseen time for contacting parties, scheduling, explaining documents, and organizing after joint inspections. If you put only one day for on-site work in the schedule and assume that is sufficient, stakeholder availability will push the timeline back. In practice, projects where the boundary is critical should not assume completion in a few days; instead, allow buffer time from the start. The range of several days to several weeks may look wide, but it realistically reflects how strongly coordination factors influence this stage.

Guideline 5: Drafting drawings and compiling deliverables — 2 to 7 days

Even after on-site work ends, it may seem like deliverables will be ready immediately, but in practice you should allow roughly 2 to 7 days for drafting drawings and compiling deliverables. Small, easy-to-organize projects may be wrapped up in about 2 days, but projects with wide areas, complex terrain, or the need to overlay multiple related drawings will take longer. It is crucial to understand that the project does not end the moment fieldwork finishes.

Drafting drawings involves organizing the collected data and converting it into usable as‑built drawings. Rather than merely connecting points to create drawings, you need to arrange roads, waterways, slopes, structures, boundaries, and elevation information in a clear way so designers and clients can make decisions easily. In solar power plant planning, the readability of drawings affects subsequent design speed, so compiling deliverables is not just administrative work.

Moreover, checking internal consistency of the deliverables also takes time. You must review whether field notes and measurement results are consistent, whether anything is missing, and whether there are any anomalies in the relationship with boundaries and existing information. Rushing this step increases the number of post-delivery questions and forces correction work later, costing extra days. In practice, higher initial delivery quality leads to steadier progress in later stages. Therefore, allocate sufficient time for drafting drawings and compiling deliverables.

The required days also vary depending on how the client will use the deliverables. Whether they are for a rough study, directly for design, or for stakeholder explanation affects the depth of compilation required. For example, if used for earthwork studies, ease of reading elevation differences is important; for boundary explanations, clarity of positional relationships is more critical. Thus, the period for drafting is not merely drawing effort but time to ensure quality appropriate to the intended use. When estimating survey days for a solar power plant, be sure to read the entire schedule including this final stage.

Common traits of sites where survey days tend to extend

There are several common traits among sites where survey days for solar power plants tend to increase. The most obvious is severe terrain conditions. On sites with steep slopes, valley topography, or mixed cut-and-fill areas, movement and instrument setup are not straightforward. Even if the mapped area is the same, the actual workload is higher than on flat ground, resulting in reduced daily progress.

Next is lack of preliminary information. Projects with old existing drawings, ambiguous boundary information, changes in the planned area, or unclear required deliverables inherently create more rework. Tasks that should have been completed by a single field visit often lead to additional confirmation or revisits. From a practitioner’s perspective, this often looks like a scheduling issue rather than a surveying delay, but from the project’s standpoint it certainly increases the number of days.

Also be cautious with sites where boundary and neighboring relationships are complex. For solar power plants, fences, maintenance tracks, and earthwork boundaries can approach the site edge, and even small differences in recognition can lead to later trouble. Therefore, sites with any unclear points tend to require longer confirmation phases. Even if you compress survey days, if stakeholder coordination cannot keep up, the whole project will not progress.

In addition, do not overlook site access conditions. Narrow delivery routes, difficult vehicle turning, time-consuming site movement, and unstable communications may seem like small problems, but they cumulatively affect daily work efficiency. That is why, when estimating days, practitioners must look at area and tasks together with four factors: terrain, information volume, coordination issues, and access.

How to shorten the schedule without sacrificing accuracy

Naturally you want to shorten survey days, but simply cutting on-site time can backfire. For solar power plant surveys, securing usable quality for downstream stages is essential; if you lower that quality, design revisions and re-surveys will increase overall time. The key to shortening is not to roughly reduce workload but to eliminate unnecessary back-and-forth and overlooked checks.

To do that, first organize pre- and post-order information carefully. If site boundaries, required deliverables, design viewpoints, whether boundary confirmation is needed, and site conditions are shared early, the surveying side can make an appropriate plan. Conversely, if the purpose changes after entering the site, you lose the most time. In practice, aligning understanding before fieldwork directly shortens days.

Also, consider separating stages. Rather than trying to finish everything at once, organizing tasks by purpose—initial study capture, boundary confirmation, and detailed survey for design—makes it easier to produce the needed deliverables at the right time. Since solar power plant plans often change, trying to finalize everything at once tends to waste effort; clarifying the role of each stage reduces waste.

Recently there is rising demand for more mobile ways to confirm positions and coordinates on site. Early identification of misalignments between design drawings and actual conditions helps reduce rework. In such situations, tools like LRTK (iPhone-mounted GNSS high-precision positioning device) can be effective for quickly confirming positions on site. Rather than replacing formal survey deliverables, view these as tools to smooth prechecks and position recognition before and after construction, facilitating shared understanding among stakeholders and improving efficiency across the surveying process.

Summary

The number of days required for surveying a solar power plant cannot be judged solely by how many days of fieldwork are needed. As a rough practical guideline: preliminary checks and organizing the survey plan — 1 to 3 days; site reconnaissance and control point verification — half a day to 2 days; as‑is survey and terrain assessment — 1 to 5 days; boundary confirmation and stakeholder coordination — several days to several weeks; and drafting drawings and compiling deliverables — 2 to 7 days. Of course these vary by site conditions, but dividing the work into stages makes it much easier to forecast the overall schedule.

What matters is not making the number of days look small, but gathering the necessary information at the required accuracy and producing results that can be used in later stages. For solar power plants, survey quality cascades into layout, earthworks, drainage, and construction planning. Therefore, carefully arranging the initial steps and clarifying the survey purpose, and identifying boundary and terrain uncertainties early, is ultimately the most efficient approach.

If you want to confirm positions and share coordinates more quickly on site, detect misalignments between design and field conditions earlier, or smooth stakeholder alignment, consider high-mobility options such as LRTK (iPhone-mounted GNSS high-precision positioning device). Used as an auxiliary tool supporting the surveying process, it can speed on-site decisions and help make planning and construction of solar power plants proceed more smoothly.