One More Transformer. Capacity for 50,000 More Customers.
One More Transformer. Capacity for 50,000 More Customers.
BC Hydro is adding a third transformer at Vancouver’s Mount Pleasant Substation as electricity demand continues to grow.
No new power plant.
No new generation project.
Yet one Vancouver substation is being upgraded to support electricity demand from up to 50,000 additional customers.
BC Hydro is investing about C$90 millionto expand its Mount Pleasant Substation, including a third transformer and supporting high- and medium-voltage equipment.
Why Add a Third Transformer?
Mount Pleasant serves Vancouver’s rapidly developing Broadway corridor, where new housing, businesses, transportation projects and wider electrification are pushing electricity demand higher.
BC Hydro says the expansion will more than double the substation’s capacity and support up to 50,000 additional customers.
The project includes the new transformer, high- and medium-voltage equipment and additional underground distribution infrastructure.
Sometimes the electricity already exists. The bottleneck is how much power the local network can actually deliver.
Generation Is Only the Beginning
A city may have enough electricity available at the system level, but that does not mean every neighbourhood or industrial area can accept unlimited new load.
Power still has to move through substations, transformers, switchgear and distribution feeders before reaching customers.
When transformer or feeder capacity approaches its limit, new loads become much harder to connect even if generation is available elsewhere.
Expanding transformer and distribution capacity can unlock new load without adding generation at the same location.
The Same Question Matters for Factories
The scale is different, but industrial projects face the same engineering question.
A factory may know that the utility can provide additional electricity, but the existing internal distribution system still has to carry it.
Can the transformer support another production line?
Can the MV and LV switchgear carry the higher current?
Are the feeders, cables, busbars and protection systems ready for future expansion?
- Current and future load
- Transformer capacity
- MV and LV switchgear ratings
- Feeder availability
- Cable and busbar capacity
- Protection and future expansion requirements
The Smartest Part Was Planned 12 Years Ago
Perhaps the most useful part of the Mount Pleasant project is not the transformer itself.
When the substation was built in 2014, space was intentionally reserved for a future third transformer.
The additional demand had not arrived yet.
But the infrastructure was designed so that more capacity could be added when it eventually did.
Plan the Space Before You Need It
BC Hydro’s Mount Pleasant expansion shows that increasing usable electrical capacity does not always begin with another power plant.
Sometimes it begins with a transformer, switchgear and distribution infrastructure that were planned for growth years in advance.
Future electrical capacity is often much easier—and cheaper—to plan for than to retrofit later.
Designing for Today—and Tomorrow
Industrial and distribution projects should consider not only today’s load, but also future production growth, spare feeder capacity and possible transformer expansion.
Derui Electric manufactures transformers together with MV and LV switchgear and other transmission and distribution equipment for overseas industrial, EPC and distribution projects.
Frequently Asked Questions
What is BC Hydro doing at Mount Pleasant Substation?
BC Hydro is expanding the Vancouver substation with a third transformer, supporting high- and medium-voltage equipment and additional distribution infrastructure.
How many additional customers could the upgrade support?
BC Hydro says the expansion will allow the substation to support electricity demand from up to 50,000 additional customers.
Why does adding a transformer increase substation capacity?
Additional transformer capacity allows the substation to transform and distribute more electrical power, provided the associated switchgear, feeders and downstream network are also adequately rated.
Why should factories plan spare electrical capacity?
Reserving transformer capacity, feeder space and suitable switchgear can make future production expansion easier and reduce the cost and disruption of major electrical retrofits.
Planning Today’s Load—or Tomorrow’s Expansion?
Share your voltage level, transformer capacity, current load and future expansion requirements. Derui Electric can support transformer, MV/LV switchgear and distribution equipment selection for industrial and EPC projects.
Contact Derui ElectricSources
- Government of British Columbia / BC Hydro, August 2026: Mount Pleasant substation expansion supports growing electricity demand
- BC Hydro: Mount Pleasant Substation expansion