Electricity Usage and Measurement
Energy Efficiency Savings Calculator
Energy Efficiency Savings is a worksheet for comparing one electrical condition at a time, with the result tied to its inputs.
Run a Energy Efficiency Savings check
The defaults only show how Energy Efficiency Savings works; replace them with values for the actual equipment or period.
Inputs to verify for Energy Efficiency Savings
Collect Baseline energy, and Reduction from the same operating case before reading annual energy savings.
- Baseline energy
- Enter baseline energy in kWh. Default shown: 60000 kWh.
- Reduction
- Enter reduction in %. Default shown: 18%.
When baseline energy is uncertain, run a low and high case instead of hiding that uncertainty in one entry.
How annual energy savings is calculated
A clean Energy Efficiency Savings result confirms the arithmetic for annual energy savings; it does not prove the equipment rating or source data is the right one.
Only the entries shown on Energy Efficiency Savings feed annual energy savings. If another correction factor matters, keep it in the notes or make a separate run.
The formula uses Baseline energy, and Reduction to produce Annual energy savings. Unit mistakes usually show up as an answer that is off by a factor of 10, 100, or 1,000.
The Annual energy savings value and any supporting metrics belong to this same Energy Efficiency Savings case, not to a nearby run with different inputs.
Applying annual energy savings carefully
Read annual energy savings together with the input values, not as a standalone fact. The same number can imply different decisions under a different equipment rating or operating period.
Energy Efficiency Savings is only useful when demand interval, tariff period, and metering basis match.
Changing baseline energy while leaving reduction fixed is a useful way to see which assumption controls the answer.
Records for reduction
Store the meter period, rate schedule, demand interval, and whether the Energy Efficiency Savings value is before or after taxes.
If a later Energy Efficiency Savings run changes only baseline energy, label it as sensitivity work. Several changed conditions deserve a new baseline.
Electrical Power Cost is a separate worksheet; carry over annual energy savings only with its units and source note.
Detail checks for annual energy savings
Energy Efficiency Savings needs the billing period and demand interval attached. A meter reading and a bill line can represent different time windows.
When annual energy savings becomes an input to another worksheet, copy the value only after the units and source condition have been verified.
Using Energy Efficiency Savings carefully
Which value should be rounded first?
Keep baseline energy at source precision during Energy Efficiency Savings; round annual energy savings only where presentation or purchasing requires it.
When should this be run again?
Run a new Energy Efficiency Savings case when the source condition changes, such as voltage, load, rate schedule, temperature, component, connection, or period.