A commercial solar feasibility assessment Kenya organisation commissions should help management decide whether to proceed, pause, investigate further or compare alternative energy options. It is an early decision tool, not a sales quotation dressed as analysis. A useful assessment combines electricity data, operating needs, physical survey findings, electrical and structural constraints, conceptual options, commercial assumptions and a transparent risk register.
Read the main solar installation services Kenya guide for the eventual procurement path, while using this assessment brief only for an evidence-based go, pause or investigate-further decision.
Set the commercial solar feasibility assessment Kenya decision question
Begin with the decision management needs to make. “Can we install solar?” is too broad. A stronger question might be whether a facility should investigate a daytime self-consumption rooftop system, whether a carport is worth comparing with the roof, whether critical operations justify a battery option, or which three branches deserve detailed design first. The assessment boundary should name the site, meters, buildings, operating period and alternatives under review.
Define success without pre-selecting an answer. Objectives can include reducing exposure to daytime grid purchases, improving resilience for specified loads, using available roof or parking space, supporting an approved sustainability programme or planning an investment sequence. Rank the objectives and record constraints such as capital approval, tenant arrangements, shutdown windows, roof replacement plans and future expansion.
Agree the output and decision gate. Management may need a screening memo, option comparison, budget range, risk register and recommendation for the next level of work. A feasibility assessment should not imply that final equipment can be ordered from a conceptual layout. It should distinguish information verified during the study from estimates and outstanding investigations.
Collect electricity and operating evidence
Gather recent electricity bills for each relevant account and, where available, interval data, meter exports, power-quality reports, outage records and operating calendars. Identify tariff components, meter arrangements and any recent or planned change in production, occupancy, shifts, refrigeration, pumping or other major loads. A year of bills can show seasonality, but bills alone may not reveal the daytime demand shape needed for a self-consumption comparison.
Map critical and non-critical loads if resilience is an objective. Record which equipment must operate during an outage, its starting characteristics, operating sequence and acceptable interruption. Do not infer this from the total monthly energy figure. Battery and generator options depend on power, energy, control and autonomy requirements as well as the existing electrical arrangement.
Data quality should appear in the report. Missing months, estimated bills, changed meters or inconsistent timestamps affect confidence. Where measured data is unavailable, state the proxy and sensitivity rather than manufacturing precision. A short monitoring exercise may be a recommended next step before detailed design.
Survey the site and identify usable areas
The physical survey should examine candidate roofs, carports or ground areas, access, orientation, apparent shading, drainage, nearby structures, security, equipment locations and cable routes. For roofs, record covering type, age information supplied by the owner, visible condition, penetrations, gutters, safe access and known future works. The feasibility reviewer should not declare structural capacity from appearance; a suitably qualified structural assessment may be required before design.
For carports or ground-mounted concepts, consider traffic, parking clearances, foundations, underground services, flood or drainage pathways, fencing, vegetation, maintenance access and potential impact on other land uses. Aerial imagery can support planning, but it does not replace measured site verification or reveal every obstruction and service.
Review the existing electrical and backup-power arrangement
Document the supply point, meter, main distribution, available diagrams, protective equipment, significant cable routes, earthing information and apparent space for connection equipment. Existing capacity and condition should be verified by competent parties before the project relies on them. A feasibility visit is not permission to open live equipment or substitute a visual opinion for required electrical tests.
Identify generators, automatic transfer equipment, uninterruptible power supplies, batteries and controls. Solar interaction with these systems must be designed; compatibility should not be assumed. Review ZES’s generator and backup-power context when framing the interface, then require the detailed stage to allocate control, protection, isolation and testing responsibilities.
If more than one building or meter is involved, define whether generation can legally and technically serve the proposed loads through the existing arrangement. Do not combine bills from separate connections as though electricity can automatically move between them. The report should flag metering, ownership and distribution boundaries for confirmation.
Develop and compare conceptual options
Options should respond to verified load and site information. They might compare different self-consumption capacities, roof areas, a carport, staged implementation, a hybrid arrangement or a solar-only base case. Each option should identify the conceptual capacity, equipment functions, usable area, point of connection, energy-use assumption, main interfaces and work excluded from the concept.
Energy estimates should disclose the data source, modelling approach, loss assumptions and limitations. Avoid treating a map-based solar resource or equipment rating as guaranteed production. Compare generation timing with facility demand, not just annual totals. Where surplus is possible, distinguish curtailment, storage and any conditional export pathway.
Kenya’s Energy (Net-Metering) Regulations, 2024 are relevant to a potential net-metering option, but feasibility does not establish eligibility or approval. The report should identify current information needs, connection-specific requirements and external decisions. It must not promise export credits or base project economics on an unconfirmed approval.
Build a transparent commercial comparison
A feasibility budget should be a range or structured allowance supported by a stated basis, not an invented national price per kilowatt. Include equipment, mounting or structure, civil works, electrical integration, monitoring, design, approvals, access, logistics, testing, training and known site remediation. Identify taxes, contingencies, escalation dates and exclusions so management understands what the figure represents.
Financial evaluation should state tariff data, load assumptions, degradation, maintenance, replacement allowances, operating period and discount or financing assumptions where used. Present sensitivity to important variables instead of promising a payback period. Savings depend on actual generation, consumption, tariffs, outages, operating behaviour and the agreed commercial method.
Compare non-price factors too: outage objectives, roof-life coordination, maintenance access, future expansion, equipment support, delivery disruption and dependency on approvals. The cheapest conceptual option may not address the business objective, while the largest array may produce energy that the site cannot use under the assumed arrangement.
Turn risks and unknowns into next actions
A decision-ready report includes a risk and information-gap register. Typical entries may concern structural capacity, roof warranty, title or landlord consent, underground services, electrical condition, shading, drainage, export assumptions, shutdown access, licensed roles, equipment lead times and data quality. Each entry should identify consequence, current evidence, proposed investigation and the party responsible for resolving it.
Confirm licensing and professional boundaries
EPRA publishes business and licensing processes and renewable-energy information and registers. If feasibility progresses, the project-specific quotation must confirm the applicable licensed solar PV contractor, licensed solar worker and electrical arrangements before regulated work begins. Current official records should be used to verify claimed credentials.
The assessment should also name tasks that require separate qualified structural, electrical, fire, environmental, planning, utility, legal, tax or financial input. ZES should not be described as providing a formal licensed energy audit or statutory certification unless that exact responsible arrangement is documented in the proposal. A preliminary assessment can coordinate questions and options without blurring those boundaries.
Coverage across Kenya’s 47 counties
Baringo, Bomet, Bungoma, Busia, Elgeyo-Marakwet, Embu, Garissa, Homa Bay, Isiolo, Kajiado, Kakamega, Kericho, Kiambu, Kilifi, Kirinyaga, Kisii, Kisumu, Kitui, Kwale, Laikipia, Lamu, Machakos, Makueni, Mandera, Marsabit, Meru, Migori, Mombasa, Murang’a, Nairobi City, Nakuru, Nandi, Narok, Nyamira, Nyandarua, Nyeri, Samburu, Siaya, Taita-Taveta, Tana River, Tharaka-Nithi, Trans Nzoia, Turkana, Uasin Gishu, Vihiga, Wajir and West Pokot.
ZES considers enquiries across Kenya subject to scope, logistics, site access, responsible licensed arrangements, equipment availability and scheduling. This coverage statement does not mean ZES has an office, assessor, stock, completed solar project or immediate availability in every county.
Frequently asked questions
Is a feasibility assessment the same as a solar quotation?
No. Feasibility tests options and exposes unknowns before a final solution is selected. A detailed quotation should follow verified scope, design inputs and responsible delivery arrangements. A supplier may price later, but the initial assessment should not hide assumptions in a single offer.
Is this assessment a formal energy audit?
Not automatically. A formal or statutory energy audit can have specific scope, competence and reporting requirements. The written proposal must say precisely what service is provided and identify any appropriately licensed or qualified party where such a role is required.
How much electricity data is needed?
Recent bills across a representative operating period are a minimum starting point. Interval data and operating schedules materially improve a self-consumption assessment. Where data is missing or the business is changing, monitoring or scenario analysis may be needed before detailed design.
Can feasibility confirm that a roof will carry solar panels?
A preliminary survey can record the roof and flag concerns, but it should not certify capacity from appearance. The project may need drawings, condition investigation and assessment by an appropriately qualified structural professional before the roof is approved for the proposed loads.
Does a positive assessment guarantee savings or grid approval?
No. It supports a decision using stated evidence and assumptions. Actual performance, savings, export and approvals depend on final design, equipment, installation, load, tariffs, weather, agreements and ongoing operation.
Commission a decision-ready assessment
Prepare recent bills, operating schedules, site drawings, roof information, planned expansions, outage priorities and existing backup-power records. Review the industrial electrical services context, then book a site survey, request a feasibility-assessment quotation or contact ZES. Require the response to define deliverables, data needs, exclusions, professional boundaries and next-step licensed arrangements.