The H2H guidance clearly defines:
Domestic Energy Use - Energy that is consumed in non-production related areas and/or buildings such as employee washrooms, domestic-only wastewater treatment plant, or office areas separated from production, canteen and kitchen, security posts, external lighting (e.g.roadway or landscape lighting), medical center, etc.
Production Energy Use - Energy that is directly or indirectly consumed in production-related activities or production areas such as production equipment operations, onsite energy generations for production (e.g. steam or electricity), industrial wastewater treatment plant, production area lighting, heating, ventilation, and cooling, etc.
Note: If industrial and domestic wastewater are treated together, energy use of the combined wastewater treatment plant should be included in production energy use.
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