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Thabiso KaliEnergy engineer · CEM

Work

Case studies, read through three lenses

A flagship deal modelled to financial close, then shorter case studies and a method note. All are illustrative, built on fictional or synthetic data so they can be shown in full, and each is written for two readers: the engineer and the person signing off the money.
Technical
Energy, demand, yield, metering and savings: what the site or plant can actually do.
Financial
Returns, debt cover, tax and timing: what it is worth, and to whom.
Commercial
Contracts, tariffs and who carries which risk.

Filter the work

Showing 4 of 4

Lens
Sector
Technology

  1. Flagship case studyFictional deal

    Riverbend Solar: a 50 MW wheeled solar deal, modelled to financial close

    A fictional 50 MW AC solar plant in the Northern Cape on a 20-year wheeled PPA, taken through the mechanics a lender tests, every figure from one model run.

    • Technical
    • Financial
    • Commercial
    Equity IRR
    21.6%
    vs 16.0% cost of equity
    Project IRR
    14.6%
    vs 10.0% WACC
    Minimum DSCR
    1.57x
    P50; 1.45x on one-year P90
    Senior debt
    R554.9m
    at 75% gearing

    Utility-scale solar · Solar PV, Single-axis tracker, Wheeling

  2. Case studySynthetic data

    Structuring a 1 MWp rooftop solar PPA (commercial scale)

    A project company builds a rooftop plant and sells the power under a 20-year PPA. Does the tariff work for the offtaker, the lender and the sponsor at once?

    • Technical
    • Financial
    • Commercial
    Equity IRR
    20.0%
    Minimum DSCR
    1.27x
    LCOE
    R1.04/kWh

    Commercial property · Solar PV, Rooftop, PPA

  3. Case studySynthetic data

    Making an efficiency upgrade bankable with section 12L

    A R3.5m retrofit saving 450 MWh a year: building the after-tax case, the M&V evidence, and what the 12L allowance is really worth.

    • Technical
    • Financial
    NPV with 12L
    R2.54m
    IRR with 12L
    26.9%
    Payback
    3.7 years

    Manufacturing · Energy efficiency, M&V, Section 12L

  4. Method noteSynthetic bill and tariff

    Reading an electricity bill like an engineer

    Time-of-use energy, kVA demand, capacity charges, power factor and estimated readings: a method for checking every line item.

    • Technical
    • Commercial
    Checks
    7
    Power factor
    R19,737
    Overbilled
    R10,000

    Commercial and industrial · Tariffs, Metering, Power factor

Contact

Have a project that needs both the engineering and the model?

Energy-efficiency cases, tariff questions, solar and storage, or a model that needs checking before it goes to committee. Email is best.

Email
thabiso.lungakali@gmail.com
LinkedIn
linkedin.com/in/thabisokali

Based in Johannesburg, South Africa.