Onyx C&I
C&I battery calculator & financial analysisBattery sizing, revenue stack and financial analysis software for commercial and industrial battery storage projects - IRR, NPV and payback in one bankable case.
Kyper Energy
The financial engine for
clean energy projects.
Onyx turns commercial and industrial battery projects into investor-ready cases — with EV charging, curtailment and P415 wholesale market modelling built in.
- Quick
- From inputs to investment case in no time
- Onyx
- One platform for C&I battery, solar retrofit and EV modelling
- UK & IE
- Built using real market data and backed by over +40 years combined experience
01Layer 01HH Energy Data Analysis
02Layer 0260 PV/BESS Simulations
03Layer 03Project Financial Analysis
04Layer 04Reporting
Onyx output reports
Investment-grade insight, ready to share.
Turn complex project inputs into clear operating profiles, tariff benchmarks and decision-ready financial scores.
Average daily dispatch profile
See how load, solar generation and battery operation interact across every half-hour of the day.
Interactive project builder
Build each project on an interactive tool, from designing on-site generation and EV charging to half-hourly load data.
About
A UK clean-energy analytics company.
Our team of industry experts built the Onyx Platform to fix a slow, spreadsheet-bound part of the energy transition. Every battery, solar or EV charging project starts life as a financial model — and those models take weeks to build, are hard to audit, and rarely survive contact with real market data.
Onyx lets developers, investors and energy managers size a project, stack its revenues and produce a defensible investment case in hours — with UK market rules, grid charging and price forecasts already built in.
Rigorous
Transparent assumptions you can audit line by line.
Fast
Full investment cases in hours, not weeks.
UK-native
Built around British market and grid realities.
Products
Three products. One Onyx Platform.
Financial modelling for C&I batteries, solar + BESS retrofits and EV charging hubs.
Onyx Retrofit
BESS retrofits for solar farmsTurn half-hourly export data on existing Solar PV Farms into a calibrated battery retrofit business cases with IRR, NPV, Revenue Stacking and Onyx Scoring.
Onyx EV
EV charging feasibility & financial analysisSite feasibility, charger sizing and financial modelling for EV charging hubs - utilisation, revenue and payback analysis.
Available countries:
Ready to model your next project?
Onyx is in early access ahead of full launch.
Pricing
Plans built for every project pipeline.
Start with our limited Beta introduction offer, or choose the capacity and support your team needs. All prices are billed monthly in GBP.
Onyx Beta
£97.50/month
Limited introductory access to the Onyx audit platform for new customers.
Starter
£195/month
For individuals and small teams building a focused project pipeline.
Pro
£695/month
For growing teams running higher volumes of energy project audits.
Portfolio
£1,895/month
For established organisations managing projects across a large portfolio.
Feature comparison
| Feature | Onyx Beta | Starter | Pro | Portfolio |
|---|---|---|---|---|
| Audits per month | 5 | 3 | 25 | 100 |
| Users | 1 | 1 | 3 | 20 |
| Cost / audit | £20 | £65 | £28 | £19 |
| Support | Email (5 business days) | Email (5 business days) | Phone (48hr resolution) | Phone (48hr resolution) |
| PDF export | ✓ | ✓ | ✓ | ✓ |
| Edit quote | × | ✓ | ✓ | ✓ |
| White-label option | × | × | × | ✓ |
Contact
Let's talk about your pipeline.
Whether you're developing a 50 MW battery, electrifying a commercial site or running a C&I battery size calculation, we'd like to hear about it. Reach out for a walkthrough of Onyx or to request early access.
hello@kyper.energy
Based
Manchester, United Kingdom