The Kenyan solar design software market has three distinct needs that global platforms don’t address equally well: KPLC net metering financial modelling with the correct avoided-cost export rate (not the retail rate used in US markets), irradiance data that captures Kenya’s regional variation from Garissa’s 6.5 PSH to Kisumu’s monsoon-impacted 3.8 PSH worst-month, and proposals output in Kenyan shillings. Software built for California or Germany handles the photovoltaic physics well but produces proposals with the wrong numbers for a Nairobi commercial customer.
This comparison covers the three platforms most used by Kenyan solar professionals in 2026: SurgePV, PVsyst, and Aurora Solar. The evaluation focuses on what matters for the East African market.
Using the Retail Rate for Both Consumption and Export Overstates Kenyan Solar Returns
KPLC’s net metering scheme exports surplus at the avoided cost rate — not the retail tariff. Solar design software that values exports at the retail rate (common in tools designed for US net metering markets) produces an overstated payback period for Kenyan projects. A financial proposal built on the wrong export rate will disappoint the client when the first NEM bill arrives. Always verify how the software models the KPLC export credit before using it in a customer proposal.
At a Glance: Platform Comparison for Kenya
| Feature | SurgePV | PVsyst | Aurora Solar |
|---|---|---|---|
| Kenyan irradiance data | Built-in, city-level | Built-in | Available |
| Worst-month vs annual PSH distinction | Yes | Yes | Manual |
| KPLC NEM financial model (avoided-cost export) | Built-in | Separate Excel needed | Uses retail rate |
| Self-consumption ratio from load profile | Yes | Yes | Simplified |
| Hybrid/off-grid design | Yes | Yes | Limited |
| Single-line diagram export (KPLC format) | Yes | Basic | Yes |
| Proposal in Kenyan shillings | Yes | No | Manual currency entry |
| Cloud-based / team access | Yes | Desktop only | Yes |
| Annual cost (approx. KSh, 2026) | KSh 25,000 – 50,000 | KSh 115,000 – 230,000 | KSh 240,000 – 560,000 |
| Pricing currency | KSh (stable) | EUR (variable) | USD (variable) |
SurgePV: Built for the Kenyan and East African Market
SurgePV is cloud-based solar design software with specific features for the Kenyan and East African C&I market:
KPLC-specific net metering modelling: SurgePV’s financial model correctly splits solar generation into self-consumed energy (valued at the all-in KPLC tariff avoided) and exported energy (valued at the KPLC avoided cost rate). This distinction is critical for accurate Kenyan proposals — the difference between retail rate and avoided-cost rate for exports can change the calculated payback period by 1–2 years.
Kenyan irradiance by city: SurgePV includes irradiance data for Nairobi, Mombasa, Kisumu, Nakuru, Eldoret, Garissa, and other Kenyan cities, with monthly breakdown that enables worst-month sizing. The software automatically uses the worst-month irradiance for array sizing calculations when selected.
Hybrid and off-grid design: Battery sizing, autonomy calculation, and hybrid inverter modelling for developers working in both the urban C&I and rural off-grid sectors.
Kenyan shilling proposals: Financial proposals output in KSh without requiring manual currency conversion. For installers presenting to Kenyan corporate finance departments, proposals in KSh with correct tax treatment are more credible than proposals requiring the client to convert from USD.
KPLC interconnection documentation: Single-line diagram export in a format suitable for submission to KPLC’s technical department for interconnection approval.
PVsyst: Yield Accuracy for Project Finance
PVsyst is the global benchmark for solar yield simulation accuracy and is used by independent engineers and lenders reviewing project finance documentation for larger Kenyan solar projects (above 500 kW). Its applications in Kenya:
- Independent yield verification for DFI or commercial bank financing
- Detailed loss analysis (soiling, shading, inverter clipping, temperature derating)
- Sensitivity analysis for P50/P90 yield estimates
- Export to bankability reports for EPRA generation licence applications
Why PVsyst falls short for Kenyan SME installers:
- EUR pricing: At current KSh/EUR rates (approximately KSh 155–160/EUR in 2026), PVsyst costs KSh 115,000–230,000 per user per year — prohibitive for smaller Kenyan solar companies
- Desktop only: No team collaboration, no cloud access, no field team access from tablets
- No KPLC financial model: Energy yield output requires a separate Excel model for every KPLC tariff proposal. This adds 2–4 hours per project for the financial analyst
- Steep learning curve: Training a new engineer takes 30–50 hours to reach competency for the full simulation workflow
When PVsyst makes sense in Kenya: EPRA generation licence applications for projects above 1 MW; DFI or commercial bank financing requiring P90 yield estimates; bankability studies for large commercial rooftop portfolios.
Aurora Solar: Strong Design Tools, Wrong Financial Model for Kenya
Aurora Solar’s strengths — 3D shading analysis using satellite roof imagery, polished customer proposal interface, and digital sales workflow — make it effective for the residential and premium commercial market in Nairobi’s upper-income neighbourhoods, where professional appearance and 3D visualisation drive the sales process.
Why Aurora underperforms for most Kenyan C&I solar:
- The financial model assumes net metering at the full retail tariff, as in US markets. KPLC’s avoided-cost export rate is not a native feature — the export credit calculation is wrong by default
- USD pricing ($149–$349/month) costs KSh 20,000–45,000/month at current exchange rates — the most expensive option per seat
- US time zone customer support creates a day-long turnaround for East Africa troubleshooting
- Off-grid and hybrid system design capability is limited
When Aurora makes sense in Kenya: Premium residential solar in Karen, Runda, and Muthaiga where 3D visualisation closes the sale; installers who also operate in markets with full retail rate net metering (Tanzania, Uganda); companies with enterprise Aurora subscriptions covering multiple African markets.
The Financial Model Is the Most Important Decision Factor
For Kenyan C&I solar, the proposal’s financial model determines whether the project gets approved by the client’s finance director. The key inputs to get right:
| Input | Kenya-Correct Value | Common Error |
|---|---|---|
| Self-consumed energy rate | Full all-in KPLC tariff (KSh 18–28/kWh) | Using only the base energy charge (excludes FCC, IFC, levies) |
| Exported energy rate | KPLC avoided cost rate (below retail) | Using retail rate — overstates export value |
| Self-consumption ratio | Calculated from load profile | Using default 70% regardless of load shape |
| Irradiance | Worst-month PSH for array sizing | Annual average — undersizes for monsoon period |
| System degradation | 0.5% per year | Not modelled — overstates long-term savings |
Software that gets all five inputs right without requiring manual correction produces the most accurate, most credible proposals.
Produce Accurate KPLC Net Metering Proposals for Kenyan Clients
SurgePV models Kenyan irradiance, KPLC tariff structures, and avoided-cost export rates — producing financial proposals in Kenyan shillings that match actual NEM billing from month one.
Book a Free DemoNo commitment required · 20 minutes · Live project walkthrough
The East Africa Multi-Market Consideration
Many Kenyan solar developers also operate in Uganda, Tanzania, Rwanda, and Ethiopia. The relevant grid frameworks for each:
| Country | Net Metering Scheme | Export Rate | Retail Tariff |
|---|---|---|---|
| Kenya | KPLC NEM | Avoided cost | KSh 18–28/kWh all-in |
| Tanzania | TANESCO (limited) | Wholesale rate | TZS-equivalent |
| Uganda | UMEME (limited rollout) | Avoided cost | UGX-equivalent |
| Rwanda | REG/EUCL (basic grid-tied) | Limited NEM | RWF-equivalent |
| Ethiopia | EEP (very limited) | Not widely available | ETB-equivalent |
Software that handles multiple East African grid frameworks under a single subscription is valuable for regional developers. SurgePV’s cloud-based model and custom tariff input capability supports multi-country operation. Aurora Solar has a regional Africa plan for multi-country teams.
Related Kenya Compliance Guides
- Kenya Solar Regulations Overview — full country compliance stack
- KPLC Net Metering Kenya — NEM scheme and avoided-cost export rates
- C&I Solar Kenya — commercial system design and financial model
- Nairobi Solar Guide — city permitting for KPLC interconnection
View all solar compliance guides across Nigeria, South Africa, Philippines, India, and more for East Africa regional development context.
Frequently Asked Questions
Does solar design software need to handle KPLC’s Fuel Cost Charge in financial models? Yes. The Fuel Cost Charge (FCC) is the most volatile component of the KPLC tariff — it changes monthly based on KPLC’s reported fuel costs and accounts for KSh 4–7/kWh of the all-in tariff for most commercial customers. Financial models that only include the base energy charge significantly underestimate the value of self-consumed solar. Use the all-in tariff from the client’s most recent KPLC bill as the self-consumption value — this automatically includes the FCC at the current month’s rate. Note that the FCC will change over the model’s 25-year period; build in a tariff escalation assumption (typically 3–6% per year for Kenyan tariffs).
Which software is best for off-grid solar SHS programmes in Kenya’s ASAL counties? PVsyst is well-suited for detailed energy yield analysis in ASAL counties (Garissa, Wajir, Turkana) — the irradiance is consistent, the load profiles are well-defined, and PVsyst’s off-grid module handles battery sizing and autonomy calculations. SurgePV is more practical for SHS programme financial modelling at scale — managing hundreds of site assessments, financial proposals, and program reporting in a cloud-based platform is more efficient than desktop-based project files. For large SHS tender submissions to REREC or KOSAP, PVsyst yield outputs combined with SurgePV financial modelling is a common workflow for Kenyan programme developers.
Can solar design software generate documents in the format KPLC requires? KPLC’s interconnection application requires a single-line diagram and a system description. Both SurgePV and Aurora Solar generate exportable single-line diagrams. The diagram must be reviewed and signed by the NCA-registered electrical contractor before submission — software output is not self-certifying. PVsyst’s diagramming capability is limited and typically requires the SLD to be drawn separately in CAD software and cross-referenced to the PVsyst yield model. SurgePV’s SLD export is the most directly usable for the KPLC submission workflow.
Is the annual cost of solar design software tax-deductible in Kenya? Software subscriptions used in the course of business are generally deductible as a business expense for corporate income tax purposes in Kenya under the Income Tax Act. The specific treatment depends on whether the subscription is classified as a software licence (capital allowance) or a service subscription (revenue expense). Consult a Kenyan tax adviser for the appropriate treatment of your specific software subscription costs.
