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Does it make sense to address efficiency before installing solar?

For manufacturing facilities where full or near-full electricity offset is the goal, looking at efficiency and generation together tends to produce better outcomes. The Ce De Candy program delivered $7.2M in lifetime savings using exactly this sequence — efficiency and generation planned across 11 projects over several years.

UpdatedJune 2026
Read time4 min read
CategoryCommercial Energy Audits
Reviewed byGI Engineering
Clear answer

Clear answer, explained.

If a facility has addressable demand charges, poorly scheduled HVAC, or aging lighting across large production areas, reducing that load first means a solar system can be sized for the optimized facility rather than the current one. The Ce De Candy program delivered $7.2M in lifetime savings using exactly this sequence — efficiency and generation planned across 11 projects over several years.


Key points

What this means in practice.

  • For facilities targeting full or near-full offset, looking at efficiency and generation together produces better outcomes
  • Reducing demand charges and consumption first allows solar to be sized to the optimised facility baseline
  • Addressable loads include demand charge spikes, poorly scheduled HVAC, and aging high-wattage lighting
  • The Ce De Candy program delivered $7.2M in lifetime savings using efficiency-first then generation sequence
  • Ce De Candy: efficiency and generation planned across 11 projects over several years
  • Not every facility warrants the combined approach — scoping identifies where it changes the economics materially

When this applies

Best-fit environments.

  • Your manufacturing facility has addressable HVAC inefficiencies or aging lighting and you are also evaluating solar
  • You want to understand whether addressing efficiency first would meaningfully change the solar system size and cost
  • You are planning a multi-year energy capital programme and need to determine the right investment sequence
  • Your CFO wants to understand the case for a phased approach — efficiency first, then generation

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