Key Takeaways
- Garissa County is expanding solar-powered irrigation to improve food security and climate resilience.
- Solar pumps eliminate fuel costs, making irrigation more affordable than diesel-powered systems.
- Reliable irrigation enables farmers to grow crops throughout the year rather than relying solely on seasonal rainfall.
- County-led climate programmes are promoting renewable energy as a tool for agricultural adaptation.
- While solar energy reduces pumping costs, sustainable water management remains essential for long-term success.
In Kenya’s arid Garissa County, where drought, erratic rainfall, and high fuel costs have long limited agricultural production, solar-powered irrigation is emerging as a practical solution for improving food security and farmer incomes.
Recent county-led and community-based initiatives are demonstrating how combining solar energy, water infrastructure, and efficient irrigation systems can turn previously unproductive land into year-round farmland while reducing dependence on costly diesel pumps.
Farming in a Harsh Climate
Garissa lies within Kenya’s Arid and Semi-Arid Lands (ASALs), a region that receives low and unpredictable rainfall.
For decades, most households have relied on pastoralism, while crop farming remained limited because irrigation depended on expensive diesel-powered pumps or seasonal rains.
During prolonged droughts, many communities experienced:
- Crop failures
- Livestock losses
- Rising food prices
- Dependence on food aid
- Reduced household incomes
Although the Tana River flows through parts of Garissa, many farmers lacked an affordable way to pump its water onto their farms.
How Solar-Powered Irrigation Works
Solar-powered irrigation systems use photovoltaic (PV) panels to generate electricity that powers water pumps.
Instead of purchasing diesel fuel or relying on an unreliable electricity grid, farmers use sunlight to pump water from rivers, boreholes, or underground aquifers into storage tanks or directly into irrigation networks.
The basic process is straightforward:
Sunlight
↓
Solar Panels
↓
Electricity
↓
Water Pump
↓
Storage Tank or Irrigation Pipes
↓
Crops
Because Kenya enjoys abundant sunshine throughout the year, solar pumps can operate for several hours each day with minimal operating costs after installation.
A County-Led Climate Adaptation Initiative
One of the latest projects in Garissa was developed by the county government under the Financing Locally-Led Climate Action (FLLoCA) programme.
The initiative introduced solar-powered irrigation systems to help communities produce food throughout the year despite increasingly unpredictable rainfall.
The programme aims to strengthen climate resilience by reducing farmers’ dependence on rain-fed agriculture while improving local food production and household incomes.
Lower Costs, Higher Productivity
For many farmers, the biggest advantage of solar irrigation is the dramatic reduction in operating costs.
Diesel pumps require continuous spending on fuel, transport, and engine maintenance. Solar-powered systems eliminate fuel costs entirely, making irrigation significantly more affordable over the long term.
The savings allow farmers to:
- Irrigate larger areas.
- Grow crops during the dry season.
- Increase harvest frequency.
- Invest more in seeds and farm inputs instead of fuel.
Although the initial investment in solar equipment can be high, operating expenses are substantially lower than conventional pumping systems.
Enabling Year-Round Farming
Reliable irrigation allows farmers to move beyond a single rainy-season harvest.
Instead of waiting for seasonal rainfall, they can produce crops throughout the year, improving both food availability and market opportunities.
Common crops grown under irrigation in Garissa include:
| Crop | Benefits |
| Tomatoes | High market demand |
| Onions | Strong storage life |
| Watermelons | Suitable for warm climates |
| Bananas | Long-term commercial crop |
| Leafy vegetables | Frequent harvests |
| Mangoes | High-value fruit production |
| Fodder crops | Supports livestock production |
Continuous production also enables farmers to sell produce when market prices are more favorable.
Supporting Climate Resilience
Climate change has increased the frequency and severity of droughts across northern Kenya. Solar-powered irrigation helps communities adapt by providing a reliable water supply even when rainfall is scarce.
Unlike diesel-powered systems, solar pumps also reduce greenhouse gas emissions and eliminate fuel transportation, making them both an environmental and economic solution.
For counties such as Garissa, where sunshine is abundant but rainfall is limited, renewable energy is becoming an important tool for climate adaptation.
Challenges Remain
Despite its benefits, solar irrigation is not a complete solution.
Several challenges continue to limit wider adoption:
- High upfront installation costs.
- Limited access to financing for smallholder farmers.
- Need for technical training and maintenance.
- Water availability during prolonged droughts.
- Sustainable groundwater management.
Importantly, solar panels do not create water—they only provide an affordable way to pump water that already exists. Long-term success therefore depends on careful management of rivers, boreholes, and groundwater resources.
Part of a Larger Renewable Energy Story
Garissa has become an important renewable energy hub in Kenya.
The county is home to the 55 MW Garissa Solar Power Plant, one of East and Central Africa’s largest grid-connected solar farms. While that facility supplies electricity to the national grid, smaller solar technologies—including irrigation pumps and solar-powered boreholes—are helping extend the benefits of renewable energy directly to farming communities.
Together, these investments demonstrate how solar energy can support both national electricity generation and local agricultural development.
