What KEBS standards apply to off-grid solar home systems in Kenya?

Solar home systems sold or installed in Kenya must comply with KS 1800 (Kenya Standard for Solar Photovoltaic Energy Systems — Residential Systems), which sets performance and safety requirements for off-grid solar systems including SHS and pico-solar products. Additionally, PV modules must comply with KS IEC 61215 and KS IEC 61730 for crystalline silicon panels. Inverters and charge controllers must comply with KS IEC 62109. The KEBS Kenya Quality Mark (KQM) programme provides a quality verification label for off-grid solar products that confirms KEBS compliance — products without the KQM are increasingly rejected by rural electrification programs and distribution networks.

Does an off-grid solar mini-grid in Kenya require an EPRA licence?

Yes, if the mini-grid supplies electricity commercially to third-party customers. Any person or company that generates and supplies electricity to customers (who pay for the electricity) requires an EPRA generation licence and potentially an EPRA distribution authorisation, regardless of whether the system is connected to the national grid. Small community mini-grids below a de minimis capacity threshold may be eligible for a simplified EPRA authorisation process — confirm the current threshold with EPRA. Individual households or businesses with solar for their own use do not require EPRA authorisation.

What is KOSAP and how does it support off-grid solar in Kenya?

KOSAP (Kenya Off-Grid Solar Access Project) is a World Bank-funded program managed by the Rural Electrification and Renewable Energy Corporation (REREC) to expand electricity access in Kenya's underserved counties, particularly the 14 ASAL (Arid and Semi-Arid Lands) counties. KOSAP supports installation of solar water pumping systems, solar home systems in unelectrified public facilities (schools, health centres), and community mini-grids. Private sector developers can engage KOSAP through REREC for projects serving target communities.

What irradiance data should I use for off-grid solar design in Kenya?

For Kenyan off-grid solar design, use site-specific irradiance data from NASA POWER (power.larc.nasa.gov) or Meteonorm. Kenya's irradiance varies from 4.5 PSH average in western Kenya (Kisumu, Kakamega) to 6.5–7.0 PSH in the ASAL north (Garissa, Wajir, Turkana). For system sizing, use the worst-month peak sun hours — not the annual average. The worst month for most Kenyan locations is June–July when cloud cover from the Indian Ocean monsoon reduces irradiance by 15–25% compared to the dry season average.

What contractor registration is required for off-grid solar installation in Kenya?

Solar installation contractors in Kenya must be registered with the National Construction Authority (NCA) under the relevant NCA registration category for electrical works. For off-grid solar systems that include electrical wiring within buildings, an NCA-registered electrical contractor must sign the installation completion certificate. The Energy (Solar Photovoltaic Systems) Regulations 2012 also require that solar system installers meet competency requirements defined by EPRA — in practice, this means using contractors who can demonstrate relevant training and experience.

Does the Kenya Quality Mark (KQM) programme apply to all solar products?

KEBS's Kenya Quality Mark (KQM) is a voluntary quality certification that confirms a product has been tested and meets the applicable Kenya Standard. For solar products, the KQM confirms compliance with KS 1800 (for SHS and off-grid systems) or the relevant IEC standard adopted as a Kenya Standard. While the KQM is technically voluntary, many programs — including government procurement under KOSAP and REREC tenders — require KQM certification as a qualification condition. Products without KQM may be refused in tenders or rejected by distributors participating in regulated programs.

Off-Grid Solar Standards in Kenya 2026

Kenya’s off-grid solar sector is one of the most mature in sub-Saharan Africa, shaped by KEBS standards that define minimum quality levels for solar home systems, EPRA’s licensing framework for commercial mini-grids, and the KOSAP program that has deployed solar at schools, health centres, and communities across the 14 ASAL counties. Unlike Nigeria — where the off-grid compliance framework is still developing — Kenya has a clearly defined set of standards, quality enforcement mechanisms, and public funding programs that experienced developers can navigate efficiently.

This guide covers the complete off-grid solar compliance framework in Kenya for 2026: KEBS equipment standards, EPRA mini-grid licensing, the Kenya Quality Mark program, KOSAP eligibility, and system design sizing standards.

Equipment Regulator

Kenya Bureau of Standards (KEBS)

Sector Regulator

Energy and Petroleum Regulatory Authority (EPRA)

Rural Electrification

Rural Electrification and Renewable Energy Corporation (REREC)

KOSAP Funding Program

World Bank / REREC — ASAL counties priority

SHS Standard

KS 1800 — Solar Photovoltaic Energy Systems: Residential

Module Standard

KS IEC 61215 + KS IEC 61730

Inverter / Charge Controller

KS IEC 62109 (inverters); KS IEC 62093 (charge controllers)

Battery Standard (Li-ion)

KS IEC 62619

Quality Mark

KEBS Kenya Quality Mark (KQM) — voluntary but widely required in tenders

Last Updated

April 2026

Mini-Grids Supplying Customers Require EPRA Authorisation

Any off-grid system that generates electricity and sells it to third-party customers — including a community mini-grid where residents pay a monthly energy tariff — constitutes commercial electricity supply under the Energy Act 2019. This requires EPRA authorisation before commissioning. Operating a commercial mini-grid without EPRA authorisation is a breach of the Energy Act and can result in forced shutdown and penalties.

Kenya’s Off-Grid Solar Market Context

Kenya has approximately 3–4 million households without grid electricity access, concentrated in the ASAL counties (Turkana, Wajir, Garissa, Mandera, Marsabit, Tana River, and others) and in remote highland communities. The ASAL counties have some of Kenya’s highest solar irradiance (6.0–7.0 PSH), making them well-suited for solar home systems and mini-grids.

The commercial off-grid market operates through:

Solar Home Systems (SHS): Individual household systems (20 W – 200 W+) sold or leased directly by private companies
Community mini-grids: Shared generation and distribution systems serving 50–500+ households
Productive use solar: Agri-processing, water pumping, cold storage — commercially deployed by private developers
Public facility solar: Schools, health centres, government offices — primarily deployed through KOSAP/REREC

KEBS Equipment Standards

KS 1800: Solar Photovoltaic Energy Systems — Residential

KS 1800 is Kenya’s primary standard for residential off-grid solar products. It covers:

Minimum system performance requirements (light output, run time, charging capability)
Durability requirements (water ingress protection, dust protection)
Safety requirements (electrical safety, battery safety)
Labelling requirements (performance marking on the product)

KS 1800 is aligned with IEC TS 62257-9-8 and the Lighting Global Quality Standards, making it compatible with internationally certified products.

Equipment Compliance by Category

Equipment	KEBS Standard	Key Requirements
SHS complete systems	KS 1800	Performance, durability, safety — system-level
PV modules	KS IEC 61215, KS IEC 61730	Performance qualification, safety qualification
String/central inverters	KS IEC 62109-1/2	Safety of power converters
MPPT/PWM charge controllers	KS IEC 62093	Safety and performance of balance-of-system components
Li-ion batteries	KS IEC 62619	Safety — secondary lithium cells and batteries
Lead-acid batteries	KS IEC 61427	Performance for standalone PV applications

The Kenya Quality Mark (KQM)

KEBS’s Kenya Quality Mark is a certification mark indicating that a product has been independently tested and found to comply with the applicable Kenya Standard. For solar products:

Products with KQM have been verified by KEBS or a KEBS-accredited laboratory
The KQM mark is printed on the product label or packaging
KEBS maintains a current list of KQM-certified products on kebs.org
Products without KQM: technically legal to sell, but excluded from most government procurement, NGO distribution programs, and increasing number of private sector resellers

For solar home system manufacturers and distributors targeting the Kenyan rural market, KQM certification has become a de facto market access requirement.

EPRA Mini-Grid Authorisation

Commercial mini-grids in Kenya that supply electricity to third-party customers require EPRA authorisation under the Energy Act 2019. The applicable EPRA pathway depends on the scale:

Small-Scale Community Mini-Grids (Below EPRA De Minimis Threshold)

EPRA has provided for a simplified authorisation process for smaller community mini-grids. The specific capacity threshold for simplified authorisation should be confirmed directly with EPRA, as it may be updated. Generally, projects below 100 kW serving defined rural communities have been eligible for a streamlined review.

The simplified authorisation requires:

Notification to EPRA of the project
Technical description and site information
Evidence that the community does not have existing grid access
Tariff proposal for the electricity service

Standard Mini-Grid Licence (Above Threshold)

Mini-grids above the simplified threshold require a full EPRA generation licence under the same framework as grid-scale solar. See the EPRA licensing guide for the full application process.

KOSAP: Kenya Off-Grid Solar Access Project

KOSAP is implemented by REREC (Rural Electrification and Renewable Energy Corporation) with World Bank funding. Key KOSAP components:

Solar Home Systems: KOSAP has funded SHS deployment in target ASAL counties through results-based financing to private sector distributors. Participating companies receive a subsidy per SHS unit sold to qualifying households.

Mini-Grids: KOSAP co-finances community solar mini-grids in ASAL communities. Developers submit project proposals to REREC and receive co-financing upon verified installation of connections.

Public Facilities: KOSAP funds solar installation at schools, health centres, and administrative offices in off-grid ASAL areas. This is primarily implemented through REREC-managed procurement rather than private developer applications.

Productive Use Equipment: KOSAP supports solar-powered water pumps, grain mills, and cold storage units in ASAL communities.

Engaging REREC for KOSAP Projects

Private mini-grid developers targeting ASAL communities should:

Confirm the target community is in a KOSAP priority area (the 14 ASAL counties)
Submit a project concept note to REREC’s program team
Receive REREC pre-feasibility confirmation before investing in detailed engineering
Obtain EPRA authorisation (REREC can advise on the applicable pathway)
Implement the project and claim KOSAP results-based subsidy upon verified connections

System Design Standards for Off-Grid Solar in Kenya

Battery Sizing

For residential off-grid systems in Kenya, size the battery bank for a minimum of 3 days of autonomy (longer than NERC’s 1.5-day requirement in Nigeria) to account for Kenya’s monsoon season rainy spells, particularly in western Kenya (Kisumu, Kakamega, Kisii):

Usable Battery Capacity (kWh) = Daily Load (kWh/day) × Autonomy Days (min. 3)

Nameplate Capacity (kWh) = Usable Capacity ÷ DoD

For ASAL regions (Garissa, Wajir, Turkana) with very consistent solar, 2 days of autonomy may be sufficient. For western Kenya and highland areas with frequent multi-day overcast periods, 3–4 days of autonomy is appropriate.

PV Array Sizing for Kenya Regions

Region	Worst-Month PSH	System Efficiency	Array Size Formula
ASAL North (Garissa, Wajir)	5.5 PSH	0.82	Load ÷ (5.5 × 0.82)
Nairobi / Central	4.5 PSH	0.82	Load ÷ (4.5 × 0.82)
Coast (Mombasa)	4.8 PSH	0.82	Load ÷ (4.8 × 0.82)
Western Kenya (Kisumu)	3.8 PSH	0.82	Load ÷ (3.8 × 0.82)
Rift Valley (Nakuru, Eldoret)	4.5 PSH	0.82	Load ÷ (4.5 × 0.82)

Design Off-Grid Solar for Kenya’s Diverse Irradiance Zones

SurgePV models off-grid battery autonomy, PV array sizing by Kenyan location, and produces single-line diagrams for EPRA authorisation applications — from Garissa’s 6.5 PSH to Kisumu’s challenging monsoon season.

See SurgePV Design Tools

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Kenya Solar Regulations Overview — full country compliance stack
EPRA Solar Licensing Kenya — generation licence for mini-grids above threshold
C&I Solar Kenya — commercial solar design and economics
Nairobi Solar Guide — city-level permits

Use solar design software that accounts for Kenya’s regional irradiance variation — particularly the monsoon-season low irradiance in western Kenya — to avoid undersized systems that underperform during the long rains.

Frequently Asked Questions

Does a solar water pump require EPRA authorisation in Kenya? A solar water pump system that powers only the pump and associated equipment at the owner’s premises does not require EPRA authorisation — it is self-generation for own use. If the water pump system is part of a community water supply business that charges customers for water (not electricity), it is a water supply business, not an electricity supply business, and EPRA authorisation is not required for the solar component.

Can an off-grid mini-grid in Kenya transition to grid connection as KPLC extends? Yes. Unlike Nigeria, Kenya does not yet have a formal regulation governing the transition when KPLC extends the grid to a mini-grid service area. When KPLC extends the grid to a community served by a private mini-grid, the developer should engage KPLC and REREC proactively to negotiate the transition — either an interconnection agreement (the mini-grid continues to operate alongside KPLC) or an asset buyout. This is an area where Kenya’s framework is less developed than Nigeria’s post-2021 NERC regulations.

What training certification do solar installers need in Kenya? EPRA’s Energy (Solar Photovoltaic Systems) Regulations 2012 require solar system installers to meet defined competency standards. The Kenya National Qualifications Authority (KNQA) and TVET institutions offer solar installation competency training leading to recognised certificates. NCA contractor registration is also required for electrical work on solar systems. Many donors and programs (KOSAP, GiZ programs) additionally require trained and certified installers for their projects.

Is insurance required for off-grid solar installations in Kenya? There is no statutory requirement for solar-specific installation insurance in Kenya. However, professional indemnity and public liability insurance is standard practice for licensed contractors and is required by many institutional clients (hospitals, schools, NGOs) as a project qualification condition. For mini-grid projects receiving REREC or KOSAP funding, insurance requirements are specified in the project agreement.