Complete solar borehole water supply solutions

Introduction to complete solar borehole water supply systems

A reliable borehole water supply system requires more than drilling a borehole and installing a pump. It involves assessing the available groundwater, determining the required water demand, selecting a suitable pump, designing the solar power supply, installing compatible electrical controls, providing adequate water storage, and constructing a distribution network that delivers water where it is needed.

A complete solar borehole water supply solution brings these components together into one coordinated system. It can serve residential homes, apartment buildings, farms, livestock projects, schools, commercial properties, institutions, and other sites that require water pumping.

Solar-powered pumping uses electricity generated by photovoltaic panels to operate a compatible pump. Depending on the design, the system may pump water directly into a storage tank during daylight hours, use batteries or an alternative power source, or incorporate automatic controls that respond to water demand and tank levels.

The right design depends on the borehole's sustainable yield, groundwater level, required flow rate, total pumping head, solar resource, storage capacity, and the distance between the borehole and the points where water will be used.

Pro-Logic Technologies Limited supports electrical and technical service requirements relevant to water pumping systems. For borehole drilling and water pumping enquiries, the company also works with Hydrosol Drilling Solution.

This guide explains the main stages involved in planning, installing, operating, and maintaining a complete solar borehole water supply system.

What is a complete solar borehole water supply solution?

A complete solar borehole water supply solution is an integrated arrangement of equipment and infrastructure designed to extract groundwater, power the pumping process, store the water, and distribute it to the required locations.

The system may include the following components:

• Borehole assessment and groundwater information.
• A suitable submersible borehole pump.
• Solar photovoltaic panels and mounting structures.
• A compatible solar pump controller or drive.
• Electrical cables, isolators, protective devices, and earthing.
• Water-level sensors and dry-run protection.
• Borehole delivery pipes, valves, and fittings.
• Water storage tanks and supporting structures.
• Automatic tank-level controls.
• Distribution pipes, outlets, and optional booster pumps.
• Monitoring equipment and maintenance arrangements.

Not every site requires every component. For example, a small installation with an elevated storage tank may not need a separate booster pump, while a large estate may require several distribution zones and additional pressure-management equipment.

The system should be designed around the site's actual water demand and hydraulic conditions rather than selecting equipment solely according to panel wattage or pump horsepower.

Why solar-powered borehole pumping is worth considering

Solar pumping can be suitable where reliable electricity is expensive, the grid is unavailable, or the property has good access to sunlight. It can also reduce dependence on fuel-powered generators when the system is properly designed.

Reduced dependence on grid electricity

A solar-powered pump can operate using energy generated by the installed solar array during suitable sunlight conditions. This can reduce the amount of grid electricity required for pumping, depending on the system configuration and operating schedule.

The actual savings depend on the previous energy source, water demand, installed equipment, maintenance requirements, and any supplementary electricity or fuel needed.

Reduced fuel requirements

Where a diesel or petrol generator would otherwise operate the pump, solar pumping can reduce generator running hours. This may reduce fuel consumption and routine engine maintenance.

However, the system must still be assessed for periods of low sunlight, high demand, and emergency water requirements. Some installations benefit from backup power or sufficient water storage.

Flexible installation locations

Solar pumping can be considered for rural properties, farms, livestock projects, construction sites, and remote facilities. The feasibility of each installation depends on access, solar exposure, groundwater conditions, security, and the availability of suitable equipment.

Water storage during productive solar hours

A solar pumping system can be configured to pump water into a storage tank when solar energy is available. The stored water can then be used later, subject to tank capacity and available supply.

This approach can reduce the need to store electricity in batteries solely to provide water after sunset. Water storage is not a substitute for sufficient borehole yield, but it can help balance pumping time with the property's demand pattern.

Adaptability to different applications

Solar borehole systems can support domestic water supply, irrigation, livestock watering, institutional facilities, and commercial operations. The pump, array, storage, and distribution network must be selected according to the specific application.

A system designed for a household should not automatically be assumed suitable for a large farm or multi-storey development.

Step 1: Assess the borehole and groundwater conditions

The borehole is the foundation of the entire water supply project. Before selecting the pump or solar array, establish the available borehole information and confirm that the source can support the intended use.

Borehole depth

The total depth of the borehole is important, but it does not by itself determine the correct pump. The pump's operating depth, water level, required delivery pressure, and total dynamic head are also relevant.

A deeper borehole may require more pumping energy, but two boreholes of similar depth can have different pumping requirements because their water levels and discharge conditions differ.

Static water level

The static water level is the level of groundwater when the borehole is not being pumped and has had time to recover.

This measurement provides information about the groundwater level at the time of testing. It may change seasonally and should not be treated as permanently fixed.

Pumping water level

The pumping water level is measured while water is being withdrawn under defined operating conditions. It helps show how far the groundwater level falls during pumping.

The difference between the static and pumping levels is known as drawdown. Understanding drawdown helps determine whether the proposed pumping rate is suitable.

Borehole yield

The borehole yield indicates how much water can be produced under specified testing conditions. The sustainable pumping rate should be established from appropriate borehole assessment and testing rather than assumed from the borehole's depth or diameter.

Installing a more powerful pump does not increase the natural recharge capacity of the groundwater source. If the pump withdraws water faster than the borehole can replenish it, the water level may fall and dry-run protection may activate.

Water quality

Groundwater should be assessed according to its intended use. Water intended for drinking may require laboratory testing and appropriate treatment. Water used for irrigation or industrial processes may have different quality requirements.

The assessment should consider relevant chemical, physical, and microbiological characteristics. A clear appearance does not prove that water is safe to drink.

Step 2: Calculate the property's water demand

The water demand determines how much water the system must deliver over a given period.

A household, farm, school, livestock project, or commercial property may have different peak demands and daily consumption patterns.

Domestic water demand

For a residential installation, consider the number of occupants, bathrooms, kitchens, laundry facilities, cleaning requirements, and any garden irrigation.

For apartment buildings and estates, assess the combined demand of all users and consider the possibility that many outlets may be used simultaneously.

Agricultural demand

Agricultural systems may need water for irrigation, livestock, washing equipment, or processing. Demand can vary according to crop type, growing stage, weather, soil conditions, irrigation method, and livestock numbers.

The pumping design should account for the actual operating schedule and the sustainable yield of the borehole.

Institutional and commercial demand

Schools, clinics, workshops, offices, hotels, and other facilities may experience substantial differences between average and peak demand.

Where water is required for essential operations, the design should also consider storage reserves, maintenance access, and a contingency plan for equipment failure.

Daily demand and pumping hours

Estimate the total volume required each day and determine the practical hours available for pumping. The pump's required delivery rate can then be assessed against the borehole yield, available solar energy, and hydraulic requirements.

For example, a site requiring 10,000 litres per day and pumping for five hours would need an average delivery rate of approximately 2,000 litres per hour during those pumping hours.

This is only a basic volume calculation. It does not establish the correct pump because actual output depends on the total pumping head, borehole yield, pump curve, and available power.

Step 3: Select the appropriate solar borehole pump

The pump must be capable of delivering the required water at the calculated operating head while remaining compatible with the borehole and solar pumping equipment.

Submersible borehole pumps

Submersible pumps are installed below the water level and are commonly used for borehole applications. Their suitability depends on borehole diameter, water level, required flow, discharge pressure, water quality, motor requirements, and the manufacturer's installation specifications.

The pump should be selected from its performance curve rather than from its advertised maximum flow alone.

Pump flow rate

Flow rate is the volume of water delivered per unit of time. It is commonly expressed in litres per minute or cubic metres per hour.

The selected pump should provide an appropriate flow rate at the required operating head. Maximum flow figures quoted without a corresponding head may not represent the actual output at the installation site.

Total dynamic head

Total dynamic head represents the overall hydraulic requirement the pump must overcome. It includes the relevant vertical lift, delivery pressure requirement, and friction losses in pipes and fittings.

For borehole systems, the pumping water level is particularly important. Using only the total borehole depth may produce an inaccurate design.

Friction losses depend on pipe diameter, pipe length, flow rate, fittings, valves, and the condition of the pipework.

Pump motor compatibility

The pump motor must match the controller's supported motor type and electrical ratings. Confirm the required voltage, current, phase configuration, operating frequency, and any manufacturer-specific control requirements.

A controller that looks physically compatible is not necessarily electrically compatible with the pump.

Dry-run protection

Dry-run protection helps prevent unsuitable operation when the pump is not receiving sufficient water. Depending on the equipment, this protection may use water-level sensors, current monitoring, controller logic, or other methods.

The protection arrangement should be selected and configured according to the pump and controller instructions.

Step 4: Design the solar panel array

The solar array must provide sufficient power for the pump under the expected operating conditions.

Determine the required electrical power

Pump power requirements should be based on the selected pump, controller, hydraulic operating point, and intended pumping schedule.

A solar array that is too small may fail to provide sufficient power during important operating periods. An oversized or incorrectly configured array may also create compatibility problems if voltage and current limits are ignored.

Consider daily solar energy

The amount of energy generated depends on solar irradiance, panel orientation, shading, temperature, weather, and system losses.

The array should be designed using suitable local solar resource information and the actual pumping energy requirement. A simple comparison between the pump's rated wattage and the total panel wattage is not enough to guarantee a particular daily water volume.

Check voltage and current limits

Solar modules may be connected in series, parallel, or a combination of both, depending on the controller's requirements.

Series connections increase voltage, while parallel connections increase current capacity. The final configuration must remain within the controller's permitted operating range, including applicable cold-weather open-circuit voltage limits and maximum input current.

These checks should be performed using the module specifications and controller documentation.

Choose a suitable mounting location

Solar panels should be positioned where they receive useful sunlight and can be maintained safely. Avoid unnecessary shading from trees, buildings, water tanks, poles, and other structures.

The mounting structure must be appropriate for the site, securely installed, and capable of withstanding the expected environmental conditions.

Step 5: Install the pump controller and electrical protection

The pump controller manages the electrical relationship between the solar array and the pump. It may regulate motor speed, provide fault indications, and protect against certain abnormal operating conditions.

Controller selection

Choose a controller designed for the selected pump and power source. Verify the supported motor type, voltage range, power rating, current limits, sensor inputs, and protection functions.

Where a hybrid system uses solar power alongside grid or generator power, the controller and changeover arrangement must be explicitly designed for those sources. They should not be connected together without compatible equipment and an approved design.

Electrical isolation

Suitable isolation equipment allows authorised personnel to isolate sections of the system for inspection and repair.

The isolation arrangement should account for the solar DC side, controller, pump circuit, and any supplementary power sources.

Surge and overcurrent protection

Protection should be selected according to the installation design, cable ratings, equipment specifications, environmental exposure, and applicable electrical requirements.

Surge protection may be appropriate where the installation is exposed to lightning-related or switching surges. The correct arrangement depends on the system design and local conditions.

Earthing and bonding

Earthing and bonding must be provided where required by the equipment design and applicable electrical standards. Protective arrangements should be verified by a qualified electrical technician.

Enclosure protection

The controller and electrical connections should be protected against dust, rain, moisture, overheating, and unauthorised access as appropriate to the location.

Cable entries should be properly sealed, ventilation should not be obstructed, and equipment should remain accessible for safe servicing.

Step 6: Install the borehole pump and delivery pipe

The installation process must follow the pump manufacturer's instructions and the borehole's construction requirements.

Confirm pump placement

The pump must be installed at a suitable depth relative to the expected pumping water level, borehole construction, and required submergence.

It should not be positioned without regard to the borehole's tested performance. Excessive drawdown or unsuitable placement may expose the pump to low-water conditions.

Use compatible delivery pipework

The delivery pipe must be suitable for the intended pressure, water quality, installation environment, and flow rate.

Pipe diameter should be chosen to balance cost, velocity, friction losses, and pressure requirements. An undersized pipe can increase losses and reduce delivery performance.

Secure cables and fittings

Pump cables and support arrangements must comply with the manufacturer's instructions. Cables should not be subjected to inappropriate tension, abrasion, or crushing.

The installation should also include appropriate arrangements for servicing and future pump removal.

Protect the borehole opening

The borehole headworks should provide a secure and suitable termination. The arrangement should reduce the risk of contamination, physical damage, and unauthorised access.

All work around the borehole should preserve its integrity and follow relevant construction and water-supply requirements.

Step 7: Install water storage tanks

Water storage can make a solar pumping system more practical by allowing the pump to operate during productive solar hours while water is used later.

Calculate storage capacity

Storage capacity should reflect daily demand, pumping availability, peak usage, the borehole's sustainable yield, and the consequences of an interruption.

A larger tank can provide more reserve water, but it cannot compensate indefinitely for a borehole that produces less water than the property consumes.

Select an appropriate tank

Tank selection should consider capacity, material, water quality, installation environment, structural support, maintenance access, and manufacturer requirements.

The tank base and supporting structure must safely carry the weight of the tank and its contents. A full water tank can impose a substantial load on a roof, platform, or tower.

Install overflow and drainage arrangements

The tank should have suitable inlet and outlet connections, an accessible isolation arrangement, and an appropriate overflow route.

Overflow discharge should be managed to avoid erosion, flooding, damage to buildings, or contamination of the borehole headworks.

Protect stored water

Where water is intended for domestic use, the tank should be appropriately covered and maintained. Openings should be protected against debris, insects, and other contaminants.

Water treatment and periodic water-quality assessment should be considered according to the intended use and applicable guidance.

Step 8: Automate pump operation and tank filling

Automation can help the system respond to water demand and reduce unnecessary operator intervention.

High-level tank control

A high-level float switch or sensor can signal the controller to stop pumping when the tank reaches its target level.

This helps prevent overflow and unnecessary operation. The sensor and control circuit must be compatible with the installed equipment.

Low-level tank control

A low-level sensor may request pumping when the tank needs replenishment. The control system should also consider the availability of solar power and the borehole's sustainable yield.

The tank should not continuously request pumping when the borehole cannot safely supply water.

Borehole water-level protection

A suitable sensor or controller protection function can help stop pumping when the water level falls below an acceptable operating condition.

The sensor's placement and settings should reflect the pump installation and borehole assessment. A protection device cannot replace proper pump sizing or sustainable-yield management.

Automatic restart

Some controllers support automatic restart after a temporary fault. The restart behaviour should follow the manufacturer's instructions and be appropriate to the fault being monitored.

Automatic restart should not cause repeated cycling under conditions that may damage the pump or controller.

Remote monitoring

Larger installations may benefit from monitoring systems that report operating status, tank levels, water output, energy performance, or fault conditions.

Remote monitoring can help identify unusual behaviour, but the data must be interpreted correctly. Physical inspection and safe technical testing remain necessary for many faults.

Step 9: Design the water distribution network

The water distribution network carries water from the storage tank or pump outlet to the intended users.

Domestic distribution

A home may require water for kitchens, bathrooms, laundry, cleaning, and outdoor use. Pipe sizing and routing should account for the number of outlets, simultaneous demand, required pressure, and the height of the delivery points.

Multi-storey buildings

Where water must be delivered to upper floors or multiple blocks, the system may need additional pressure management, booster pumps, or separate distribution zones.

The design should consider elevation differences, pipe friction, peak demand, and acceptable operating pressure.

Agricultural distribution

Irrigation systems may require filters, valves, manifolds, pressure regulation, and distribution pipes appropriate to the chosen irrigation method.

The pumping system should not be sized independently of the irrigation network. The required flow and pressure at the delivery point influence the pump duty.

Leak detection

Leaks can waste water and increase the time needed to refill storage tanks. Inspect accessible joints, valves, pipes, and outlets during commissioning and maintenance.

Unexplained increases in pumping hours or declines in tank-filling performance should prompt investigation of possible leaks, demand changes, or equipment faults.

Step 10: Commission and test the complete installation

Commissioning verifies that the installed components work together as intended.

Electrical checks

A qualified technician should verify the solar array configuration, controller compatibility, cable installation, isolation, protective devices, and relevant electrical measurements.

The results should be recorded against the equipment specifications and installation design.

Pump operation

The system should be tested under suitable operating conditions to verify that the pump starts, runs, and stops as intended.

Where possible, record the actual flow rate and discharge pressure, along with the relevant controller settings and water-level conditions.

Tank controls

Test the high-level and low-level controls to verify that the pump responds correctly. Confirm that overflow protection and any alarm functions operate as intended.

Leak and pressure checks

Inspect accessible pipework, fittings, valves, and tank connections for leakage. Check pressure readings where the system design includes pressure measurement.

Record baseline performance

Record the system's normal operating behaviour at commissioning. Useful baseline data include flow rate, pump operating conditions, controller settings, tank-filling time, and measured water levels where available.

These records provide a reference for later maintenance and troubleshooting.

Step 11: Solar borehole solutions for homes and residential estates

Residential systems should be designed around the number of users, daily consumption, storage arrangements, and distribution requirements.

Individual homes

A household may use a solar borehole pump to fill a storage tank that supplies the property by gravity or through a booster pump.

The correct arrangement depends on the tank's elevation, required water pressure, available space, and the household's water demand.

Apartments and residential estates

An estate may require larger storage capacity, multiple distribution lines, pressure control, and more detailed monitoring. Demand should be assessed across all units rather than treating each apartment as an independent household.

Maintenance access and contingency arrangements are particularly important where a single borehole supplies many users.

Rental properties

Landlords and property managers should establish a process for reporting water interruptions and recording pump faults. Regular checks of tank levels, pipework, and controller alarms can help identify problems early.

Step 12: Solar borehole systems for farms and irrigation

Agricultural installations require a balance between available groundwater, irrigation demand, solar energy, and storage.

Crop irrigation

The design should consider crop water requirements, irrigation scheduling, soil conditions, distribution pressure, and seasonal demand.

Where possible, pumping schedules can be aligned with daylight hours and storage availability. However, the total volume withdrawn must remain within the borehole's sustainable yield.

Drip irrigation

Drip irrigation systems commonly require suitable filtration and pressure control. Blocked filters or emitters can affect performance even when the borehole pump is working normally.

The pump and solar array should be selected according to the irrigation system's flow and pressure requirements.

Sprinkler irrigation

Sprinkler systems may require higher delivery pressure than some other irrigation methods. The pump must be selected to meet the required flow and pressure at the operating point.

Do not assume that a pump suitable for filling an open tank will automatically be suitable for pressurised irrigation.

Livestock watering

Livestock systems may supply drinking troughs, tanks, and other watering points. Storage can help provide water when sunlight is limited or demand increases temporarily.

The design should include practical access to troughs and tanks, reliable level controls, and arrangements for responding to a pump fault.

Step 13: Solar borehole water supply for institutions and businesses

Institutions and commercial properties may need consistent water for sanitation, cleaning, food preparation, production, or other activities.

Schools and training facilities

A school system should be sized according to the number of users, daily activities, storage capacity, and periods of peak demand. Tank hygiene and safe access to the pumping equipment should be included in the maintenance plan.

Clinics and healthcare facilities

Water supply arrangements for healthcare facilities should consider the intended use, applicable hygiene requirements, water quality, storage, and contingency planning.

A solar pumping system should be assessed as part of the facility's overall water-supply arrangements rather than treated as an isolated electrical installation.

Workshops and commercial premises

Workshops and businesses may require water for cleaning, staff facilities, production processes, or equipment maintenance. The design should distinguish domestic consumption from any specialised process-water requirements.

Where uninterrupted supply is essential, assess storage reserves and backup arrangements alongside the solar pumping system.

Step 14: Water treatment and quality management

A borehole pumping system delivers water, but pumping alone does not make the water safe for every use.

Water testing

The appropriate water-quality assessment depends on whether the water is intended for drinking, domestic use, irrigation, livestock, or a particular industrial process.

Testing should be performed using suitable methods and interpreted against relevant standards or guidance.

Treatment options

Depending on the test results, treatment may involve filtration, disinfection, or other processes selected for the specific contaminants present.

Treatment should not be selected solely from the water's appearance, taste, or smell. Some contaminants cannot be reliably detected through those observations.

Protecting the source

The borehole headworks, nearby drainage, storage tank, and distribution system should be maintained to reduce contamination risks.

Potential contamination sources should be assessed as part of the wider site and water-supply management plan.

Step 15: Common solar borehole system faults

A complete system can experience faults in the solar array, controller, pump, water-level controls, tank, or distribution network.

Pump does not start

Possible causes include insufficient solar input, controller faults, electrical protection trips, incompatible settings, sensor problems, or motor failure.

Record the controller's displayed code and operating conditions. Electrical diagnosis should be carried out by a qualified technician.

Low water output

Potential causes include low borehole water levels, unsuitable pump sizing, blocked filters, pipe restrictions, leaks, insufficient power, or pump wear.

Check the hydraulic and electrical systems before deciding that the pump needs replacement.

Frequent dry-run alarms

Frequent alarms may indicate that the borehole water level is falling during pumping, that the sensor is faulty, or that the protection settings require assessment.

The cause should be established before changing the pumping schedule or controller settings.

Tank overflow

Overflow may result from a failed float switch, incorrectly configured controller, damaged sensor cable, or unsuitable control arrangement.

Test the level-control system and repair the underlying problem. Do not leave the pump running with its protective controls bypassed.

Controller overheating or repeated trips

Possible causes include unsuitable environmental conditions, electrical faults, overload, incorrect configuration, or a component problem.

Use the controller's diagnostic information and manufacturer instructions to guide the investigation. Do not increase current limits or disable protection to force continued operation.

Step 16: Maintenance planning for a complete system

Preventive maintenance should cover the whole installation, not only the pump.

Solar array inspection

Inspect the modules for contamination, shading, visible damage, and loose mounting hardware. Clean panels when required using safe, manufacturer-approved methods.

Electrical inspection

Inspect accessible cables, connectors, enclosures, and protective equipment. Detailed electrical testing should be carried out by qualified personnel using appropriate instruments and isolation procedures.

Hydraulic inspection

Check flow rate, pressure where applicable, valves, delivery pipes, filters, and tank connections. Investigate unexplained changes in pumping time or delivered volume.

Borehole monitoring

Record relevant water-level measurements and pumping performance where practical. Changes over time can help distinguish a water-source limitation from an equipment fault.

Documentation

Maintain a record of inspection dates, measurements, fault codes, repairs, and outstanding recommendations. Store the pump and controller specifications alongside the installation records.

Step 17: Factors that affect the cost of a complete solar borehole system

The total project cost depends on the site and the required scope of work. A responsible estimate should follow an assessment of the borehole, demand, equipment, and installation conditions.

Borehole drilling and site conditions

Where a borehole is not already available, the project may require drilling, testing, headworks, and associated works. Ground conditions, borehole depth, access, and the scope of drilling influence the cost.

Pump and solar equipment

Pump capacity, controller type, solar panel quantity, mounting structures, cable lengths, and protection requirements affect the equipment budget.

Selecting equipment based only on the lowest initial price may lead to unsuitable performance or compatibility problems.

Storage and distribution

Tank capacity, tower or platform construction, pipe lengths, valves, fittings, and distribution requirements can form a significant part of the project.

The cost also depends on whether the site needs booster pumps, pressure-management equipment, automation, or remote monitoring.

Installation and commissioning

Installation costs depend on the site layout, access, equipment handling, electrical work, plumbing, testing, and commissioning requirements.

A detailed quotation should identify the components and services included and clarify any exclusions, assumptions, or additional work that may be required.

Step 18: How to choose a suitable solar borehole service provider

A complete water supply project requires coordination between borehole assessment, pump selection, electrical design, plumbing, storage, and commissioning.

Ask for a clear technical assessment

The service provider should establish the required daily water volume, borehole yield, water levels, pump duty, solar power requirements, and distribution needs.

Where key information is unavailable, the provider should explain what testing or assessment is necessary before equipment is selected.

Confirm equipment compatibility

The proposed pump, controller, solar array, sensors, and protection devices should be compatible. The installation should not rely on assumed compatibility based solely on physical appearance or general product descriptions.

Request a defined scope of work

The quotation should state which components and services are included. It should distinguish equipment supply, installation, electrical protection, tank works, pipework, testing, and commissioning where relevant.

Establish maintenance arrangements

Ask how faults will be reported, what maintenance is recommended, which components may need periodic inspection, and what information should be kept for future servicing.

Clear maintenance arrangements can help the owner manage the system after installation.

Step 19: Working with Pro-Logic Technologies Limited and Hydrosol Drilling Solution

Pro-Logic Technologies Limited provides technical services relevant to electrical systems and equipment. For borehole drilling and water pumping enquiries, the company also works with Hydrosol Drilling Solution.

A project enquiry should include as much useful site information as possible, such as:

• Whether the borehole already exists.
• The borehole depth and available yield-test information.
• Static and pumping water levels, if known.
• The intended daily water demand.
• Whether the water is for domestic use, irrigation, livestock, or commercial purposes.
• The required tank capacity and approximate delivery distance.
• Existing pump, solar panel, or controller details.
• Any recurring fault or water-supply problem.

Providing these details helps clarify the work required and identify which measurements or assessments are still necessary. Final equipment selection should be based on verified site information and manufacturer specifications.

Contact details

Company: Pro-Logic Technologies Limited

Phone: 0723763173

Website: https://prologictecnologies.co.ke

Borehole-related enquiries: Hydrosol Drilling Solution

Frequently asked questions about complete solar borehole water supply solutions

Can solar power operate a borehole pump directly?

Yes. A compatible solar pumping system can use electricity from photovoltaic panels to operate the pump through a suitable controller. The design must meet the pump's electrical requirements and provide adequate power under expected operating conditions.

Is a battery necessary for solar borehole pumping?

Not always. Many systems pump water during daylight and store it in a tank for later use. Batteries or alternative power sources may be appropriate where the application requires electrical operation at specific times or additional operational flexibility.

How do I know which pump size is appropriate?

Pump selection requires the required flow rate, pumping water level, delivery pressure, pipework losses, borehole yield, and motor/controller compatibility. The pump's performance curve should be used to confirm its expected output at the intended operating point.

Can a larger solar array solve low borehole water output?

It may improve power availability if insufficient solar power is the limiting factor. However, it will not solve every cause of low output. A low water level, restricted pipework, pump fault, or insufficient borehole yield requires a different response.

What size water tank should I install?

Tank capacity should be based on daily demand, expected pumping availability, borehole yield, peak usage, and the reserve needed during interruptions. A suitable assessment should consider both average consumption and periods of unusually high demand.

Can the system supply a multi-storey building?

Potentially, yes. The design must account for elevation, required pressure, pipe friction, peak demand, and storage. A booster pump or additional pressure-management equipment may be necessary.

Does a solar borehole system need regular servicing?

Yes. Solar panels, electrical connections, controllers, pumps, sensors, tanks, and pipework all require appropriate inspection. The maintenance schedule should follow manufacturer guidance and account for the operating environment.

Can borehole water be used for drinking?

Only after the water's suitability has been assessed. Water quality testing and appropriate treatment may be necessary depending on the source and intended use. Pumping water does not establish that it is safe to drink.

What happens when the borehole water level falls?

The available pumping output may decline, and dry-run protection may stop the pump if the water level becomes unsuitable. The response should be based on borehole assessment, operating records, and the pump's specifications.

Can a complete solar pumping system include automatic tank filling?

Yes. Compatible level sensors, float switches, and controller inputs can be used to manage tank filling and help prevent overflow. The controls must be correctly installed and tested.

Conclusion: Plan the entire water supply system, not just the pump

A complete solar borehole water supply solution combines a suitable groundwater source, correctly selected pump, compatible solar array, reliable electrical controls, appropriate water storage, and an effective distribution network.

The most important design principle is to match the system to the actual water demand and the borehole's sustainable yield. Solar panel wattage, pump horsepower, and tank capacity should be selected as parts of one coordinated design.

Proper installation, commissioning, water-quality management, preventive maintenance, and performance records help property owners understand how the system operates and respond to problems more effectively.

For technical enquiries concerning electrical equipment and water pumping requirements, contact Pro-Logic Technologies Limited on 0723763173 or visit https://prologictecnologies.co.ke. For borehole drilling and related water pumping enquiries, Hydrosol Drilling Solution is also part of the company's borehole-related service arrangements.