A series mining the PhD thesis on London and UK office buildings (Azhari, 2025). Key takeaway. Hybrid work did not deliver the linear energy saving the headlines implied: some demand shrinks when occupancy drops, base-building load holds steady, and fresh-air ventilation actually grows.
The expected best Sharpe of a parameter sweep climbs as the grid grows, even when every strategy in it is worthless. Here is the deflated Sharpe ratio explained as a practitioner sees it, with a small N to noise-ceiling lookup table you can apply to your own sweep tonight, and the one rule that killed my proudest grid-search winner: N is the pool, not the podium.
A series mining the PhD thesis London and UK Office Buildings (Azhari, 2025). Key takeaway. The UK mainstream office benchmarks ECG-19 and CIBSE TM46 rest on a 1992 study, and the Greater London data shows actual offices nowhere near those values, so a refresh is overdue.
The most dangerous code in a trading repo is the throwaway research notebook. One structural rule, dependencies that flow in a single direction, keeps it out of production and turns invisible coupling into a number you can grep.
A series mining the PhD thesis “London and UK Office Buildings: Investigating Energy Use and Landlord-Tenant Influences” (Azhari, 2025). Key takeaway. Australia NABERS rates buildings on what they actually use and makes ratings mandatory for office disclosure. The UK is part-way there with NABERS-UK and the DEC, but missing the policy backbone.
Choosing a quant trading framework is not a feature comparison between NautilusTrader, backtrader and a DIY loop. It comes down to one property, and a rubric you can apply to any engine: does your backtest run the same code as live?
A series mining the PhD thesis on London and UK office buildings (Azhari, 2025). Leading UK commercial landlords reported portfolio energy reductions of 38 to 73 per cent over a decade, well above the sector average, and the repeatable moves behind it are few and mundane.