Building the Case6 / 12
Quantifying Project Savings
Conservative estimates; M&V plan; avoiding overstatement (critical!).
10 min read · Jacob Willis, Net Zero Lead · Last reviewed July 2026
The heart of an energy investment case is the saving it claims. Quantifying that saving credibly - neither overstating to win approval nor understating through excessive caution - is a discipline in itself, and the integrity of the whole case depends on it.
In this lesson
- 01The central importance of credible savings
- 02Calculating the saving
- 03Engineering estimates and their limits
- 04Conservative and honest estimation
- 05Including all the value
- 06Verification commitment
- 07From savings to the full case
- 08Sources and further reading