Reducing Energy Costs - Schedule charge on laptop trolleys

[IT_JB]

Was the school being used a lot in the summer holidays then?

 

What does Always On mean?

 

Yes, they had clubs using their sports hall all summer. It highlighted that they hadn't calculated the energy costs correctly for the rent.

 

This is how they define always on.

 

"What is Always-on or Standby consumption?Always-on or Standby Power is defined as the lowest power measured within the last 2 days. This is the consumption of appliances that are never switched off."

Getting that as low as possible is also an aim, finding what is contibuting significantly to that amount is the challenge. We are considering adding more CT clamps so we can go down to the circuit level data.

[mavhc]

Step 0: monitor each of the circuits in the school for power usage

Step 1: automatic shutting of outside doors

Step 2: insulation

Step 3: solar panels

Step 4: LED lighting

Step 5: Sleep mode on computers

Step 6: Actually use the expensive BMS someone paid for but no one knows how it works

Step 7: Now you can fix the heating

[enjay]

From the maths I did a few years ago even a badly optimised IT estate pales into insignificance compared to the amount of energy schools use on Heating, Lighting, Canteen, Cookery rooms, etc.

 

We found the same here, and that is also supported in the graphs from @IT_JB where you see higher usage during the weekday than weekends in the summer break, when most of the weekday usage was a hirer in the school hall.

[NeoNebula]

I've heard that the rate at which a device loses charge when idle can vary significantly. Some modern devices have excellent standby efficiency and lose very little charge over time.