What is Peak Load Lopping and Peak Load Shaving ?

Peak load lopping also known as ‘peak load shaving’ & ‘peak load shedding’, is the used when the GRID supply can’t be increased due to cost or location and you need more power than is available.

Sometimes the GRID can’t or won’t supply the power you require. As a result, the only alternative is an additional generator power source. This would operate in synchronisation with the mains power supply.

Consequently, this will deliver additional power beyond the peak demand of your existing GRID supply.

The most cost effective way to supplement mains GRID power, temporarily or permanently is to use an automatic installed generator.

This will provide the additional power supply when you need.

Whether on a temporary basis, during periods of high demand.

Or permanently, without the horrendous cost on your DNO provided additional capacity.

Power Continuity is here to help.

An example of Peak Load lopping:

If a site only has an 80amp 3 phase supply, but is likely to operate above 80 amps 3 phase, certainly the automatic installed generator will start up.
AMF Panel G99
It will prepare to take the additional load automatically, supporting the GRID supply with additional ‘on site power’ beyond the maximum GRID supply.

Both the generator and the GRID supply will provide power to your site, working together in parallel.

That would allow the site to have power of 80amps + 180amps = 260 amps whenever required.

This is without the cost of additional GRID cabling or DNO connections.

When the site requirement is likely to drop below 80 amps the generator will stop and the site continues on GRID supply.
All operated automatically, fully synchronised, seamless.

G99 configuration

In the UK, G99 is the regulatory standard surrounding the connection of any form of generator device to run ‘in parallel’ or ‘synchronised’ with the mains electrical utility grid (National Grid).

G99 was previously known as G59. G99 requires that generators have a voltage control system that can inject or absorb reactive power into the grid to control voltage.

Power Continuity will carry out the G99 configuration of the existing site LV panels.
The specification of the ‘Peak Load Shaving Panel’ needs to be built and configured, specifically for the site.
This is all controlled by Programmable Logic Controllers (PLC).

The G99 automation will allow a fully automatic peak load lopping system.
Automatically, within the bespoke panel, built by Power Continuity.
We will also therefore have to add G59 capability to the Generator for complete synchronisation of the load lopping system.

Peak Load Shaving

For a large proportion of the working day, you may require Peak load lopping. At weekends, the existing GRID power supply may be sufficient; likewise you will ONLY supported by GRID power.

Your local UK Distribution Network Operator (DNO) will advise you as to whether their costs for additional electrical power will be prohibitive or whether Load Shedding is more cost effective.

Should you go down the Peak Load Shaving route,
your DNO will provide the application paperwork and Power Continuity can help you fill it out prior to submission.

Upon installation, the local DNO will wish to be present when the system is tested and commissioned, to ensure it meets the latest DNO & GRID regulations. Once sign off you’re ready to go.

There is nothing onerous about Peak Load Lopping. Both the GRID and your local DNO are fully aware of thousands of sites across the UK that use their own generators to provide additional power.

If you require any assistance, Power Continuity can help YOU.
We’re here 24/7 to support our UK customers.

Call 0845 05 8455 and ask to speak with one of our engineers.

G59 Peak Lopping Generator Power System

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