Self-directed project
Energy and Renewable: Machine Learning for the Power Grid
Junior Machine Learning Engineer · AI / ML · September 2026
A ProoV case study · educational project, not employment
Built a leakage-free gas-turbine TEY predictor end to end: selected only the eight available sensor inputs, excluded downstream CO/NOx emissions, and validated on a locked-away later time period. Compared a LinearRegression baseline with a RandomForest, reported held-out MAE/RMSE/R², inspected residuals for bias, and documented deployment limits plus a concrete drift-monitoring plan.
Graded against
- Build and validate the model correctly35%
- Optimize and evaluate honestly25%
- Write the Model Card (clarity + honesty)25%
- Explain it to a non-expert15%
Passed · pass mark 60/100
What stood out6
- Correctly excluded CO and NOx as downstream outputs to avoid target leakage
- Used an earlier-years/later-years split instead of a random shuffle, preserving temporal validity
- Compared a LinearRegression baseline against a tuned RandomForest and showed a clear held-out improvement
- Read the residuals and explicitly noted higher uncertainty / underprediction at high loads
- Leakage-Free Feature Selection
- Time-Based Model Validation
The work I submitted20 tasks
12 tasks · 14 lines · Python, JavaScript · 8 written answers · 336 words
- Problem Frame236 characters
- Leakage Flags113 characters
- Train Validate BaselinePython · 1.2k characters
- Train Validate Forest607 characters
- Train Validate124 characters
- Tune Evaluate SetupPython · 2 lines
- Tune Evaluate ResidualsPython · 2 lines
- Tune Evaluate42 characters
- Residual Read382 characters
- Drift Monitor94 characters
- Model Card2.3k characters
- Teach BackJavaScript · 844 characters
- Problem Frame21 words
- Leakage Flags1 word
- Train Validate Baseline87 words
- Train Validate Forest28 words
- Train Validate1 word
- Tune Evaluate Setup105 words
- Tune Evaluate Residuals92 words
- Tune Evaluate1 word
Summarised on purpose — the submitted code and writing stay private so this page cannot be reused as an answer key. The full submission sits behind the verified certificate.