Solar and Energy Solutions

Bosch Water & Engineering Ltd

Solar and Energy Solutions

Harness the sun to power your systems. We design and install custom solar and energy solutions that eliminate electricity costs, bypass grid failures, and guarantee a continuous, eco-friendly water supply.

Service Overview

Professional Solutions Built Around Your Needs

solar and energy

Grid electricity in Kenya is expensive and unreliable. For a typical medium commercial customer, the all-in cost of grid electricity ranges from KSh 18–28 per kWh, including energy charges, fuel cost adjustments, inflation factors, and levies. Kenya consistently ranks among the highest electricity costs in Africa, with industrial tariffs of 0.18–0.23 USD per kWh depending on the category. Small and medium enterprises pay even more.

Meanwhile, reliability remains a persistent problem. In the first half of FY 2024/2025, customers experienced an average of 9.15 hours of outages per month, exceeding the EPRA target of 3.25 hours.

The number of interruptions averaged 3.57 per month, significantly above EPRA’s benchmark of 1.63. For businesses like hotels, farms, and manufacturing facilities dependent on the continuous water supply, these interruptions translate directly into operational losses.

Solar energy offers a direct solution. The levelised cost of electricity (LCOE) for a well-sized commercial solar system in Kenya is approximately KSh 8–14 per kWh over 25 years. For every kWh of grid electricity displaced by solar, businesses avoid KSh 18–28 in costs, a savings of KSh 6–18 per kWh self-consumed.

Bosch Water & Engineering integrates sustainable energy into your water systems to reduce running costs and ensure reliability in areas with unstable grid power.

 

What's Included

Our Sub-services

Solar Water Pumping (Replacing electric pumps on boreholes to cut costs)

Solar Power for Treatment Plants (Running RO and filtration systems off-grid)

Solar Irrigation Systems (Powering farm and golf course pumps)

Off-Grid Water Supply (Ensuring 24/7 water even during KPLC blackouts)

Hybrid Energy Systems (Integrating solar with existing grid/electric pumps to save money)

Why Choose This Service

Key Benefits

Zero Electricity Bills: Eliminate expensive KPLC bills and monthly pumping costs by powering your water systems directly from the sun.

24/7 Water Supply: Bypass grid failures, blackouts, and load-shedding to ensure your taps never run dry.

Fast Return on Investment: Solar pumps pay for themselves within a few years through massive energy savings, then provide free power.

Low Maintenance: Solar panels have no moving parts, require minimal servicing, and outlast traditional diesel generators.

Eco-Friendly: Reduce your carbon footprint and operate a completely green, sustainable water infrastructure.

Perfect for Remote Areas: Access reliable water in off-grid locations (like farms or rural boreholes) where electricity infrastructure doesn't exist.

Silent Operation: Unlike noisy diesel generators, solar pumping systems operate quietly and require no fuel deliveries.

How We Work

Our Process

We handle every stage of your solar and energy project, from assessing your current consumption to designing the optimal power setup, installing the equipment, and maintaining it for years to come.

Step 1: Energy Audit & Site Assessment

Every energy solution begins with understanding your specific consumption patterns and site conditions. We conduct a comprehensive energy audit to:

  • Measure your current electricity consumption and peak demand
  • Identify which loads can be solar-powered (pumps, heating, lighting)
  • Assess your site’s solar irradiance and available installation space
  • Determine whether grid, solar, or a hybrid generator setup is most cost-effective

This assessment ensures you invest in the right technology—not more than you need, and not less than your operation requires.

Step 2: Custom System Design

Based on your energy audit results, we design a system tailored to your site. This includes:

  • Solar array sizing to meet your daily pumping or heating requirements
  • Battery storage (if required) for extended operation beyond daylight hours
  • Generator sizing for backup or hybrid operation
  • Controller and inverter selection with MPPT technology for maximum efficiency

We calculate the return on investment for each option, so you can make a fully informed decision.

Step 3: Supply & Installation

We supply and install all components, using trusted brands and equipment designed for Kenyan conditions. Our installations include proper mounting, wiring, protection systems, and integration with your existing water infrastructure.

Step 4: Testing & Commissioning

Every system is tested and calibrated before handover. We verify solar output, pump performance, and generator operation under load. We also train your team on operation and basic maintenance.

Step 5: Ongoing Support

We offer maintenance, performance monitoring, and emergency repair services to keep your solar and generator systems operating at peak efficiency.

Our Solar & Energy Solutions

Solar Water Pumping

Solar-powered pumping is now firmly established as the technology of choice for water supply in remote off-grid applications, and increasingly for general pumping duties where grid power is expensive or unreliable. In Kenya’s arid and semi-arid regions, the government’s KOSAP project is currently constructing 57 solar-powered boreholes in Isiolo and Tana River alone, with hundreds more planned nationwide.

How it works: Solar photovoltaic modules generate DC electricity that powers a submersible pump directly, no batteries required for daytime pumping. Water is pumped from the borehole into storage tanks, providing a reliable supply even when the grid fails.

Key advantages:

  • Zero fuel costs after installation
  • No grid dependency — ideal for remote farms and boreholes
  • Low maintenance — no fuel delivery, no engine servicing
  • 25+ year lifespan for solar modules

Typical systems we install:

Application                         Daily Output                 Typical Head

Domestic borehole             3–6 m³/day                     30–60m

Farm irrigation                   10–15 m³/day                  40–100m

Commercial/Industrial      15+ m³/day                    80–110m+

Systems are available in kit form (including pump, PV modules, cables, and controller) or as fully installed solutions.

Solar Water Heating & Pool Heating

Water heating typically accounts for 30–40% of a household or hotel’s energy bill. Solar water heating eliminates most of that cost by using free energy from the sun.

How it works: Solar collectors (vacuum tubes or flat panels) absorb solar radiation and transfer heat to water stored in an insulated tank. A thermosyphon or pumped circulation system moves water between the collectors and the tank.

Typical systems we install:

System Size   Household Size   Daily Heat Output       Typical Price Range

150L              3–5 people             5.6–8.3 kWh                   KSh 125,000–145,000
200L             5–7 people             7.4–11.2 kWh                  KSh 125,000–145,000
300L            8–10 people           11.2–16.7 kWh                   Higher capacity

Vacuum tube systems are particularly effective in Kenya’s climate, with five-year guarantees on tanks and heating tubes. For hotels and clubs, larger arrays can be designed to meet pool heating and domestic hot water requirements.

Backup Generators

When solar and storage cannot meet demand, or when critical operations absolutely cannot stop, a backup generator provides the reliability you need.

We supply and install Perkins-powered diesel generators, known for durability, fuel efficiency, and readily available spare parts. These units are available in a range of capacities, from small commercial units to large industrial sets.

Perkins generator specifications (sample range):

Model Power                               Output Engine              Fuel Consumption (75% load)
DGP12 12 kW                             403A15G2                        ~3.1 L/hr
DGP24 24 kW                             1103A33G3                     ~5 L/hr
DGP48 48 kW                            1103A33TG2                  ~10 L/hr
DGP80 80 kW                           1104C44TAG2                ~17 L/hr

Perkins generators come with digital control modules, automatic shutdown protection, and sound-attenuated enclosures for quiet operation. Automatic Transfer Switch (ATS) options allow seamless switchover during grid failures.

Important cost consideration: Diesel in Kenya costs approximately KSh 218–223 per litre (as of 2026). A 48 kW generator running at 75% load consumes roughly 10 litres per hour, approximately KSh 2,200 per hour in fuel alone. This makes generators best suited for backup or intermittent use, not continuous prime power. For continuous operation, solar is dramatically cheaper.

Energy Audits

Before investing in any solar and energy system, you need to know exactly what you’re spending and why. Our energy audits provide:

  • Load profiling — which equipment consumes the most power and when
  • Tariff analysis — whether you’re on the optimal KPLC tariff category
  • Solar suitability assessment — how much of your load can be solar-powered
  • ROI calculations — payback periods for solar vs. generator vs. hybrid

For a typical medium commercial customer paying KSh 23–25 per kWh for grid electricity, solar systems often achieve payback in 4–6 years. For businesses in remote areas relying on diesel generators, the payback is even faster.

FAQ

Frequently Asked Questions

1. Can I convert my existing electric borehole pump to solar?
Yes, we can retrofit your current pump with solar panels and a solar VFD (variable frequency drive) to eliminate your electricity bills.
2. What happens to my water supply at night or on cloudy days?
We design hybrid systems that automatically switch to grid power or batteries, or use storage tanks to ensure you have water 24/7.
3. How long does it take for a solar water system to pay for itself?
Most systems pay for themselves within 2 to 4 years by eliminating your monthly electricity bills, after which your water pumping is essentially fre

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