Penelope Guarnay

Penelope Guarnay

Group Energy Manager

Marks and Spencer

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Biography

Penelope commenced her career in Sustainability in the Property and Construction industry  in 2005, before moving into energy management in 2010. She has experience across Telecoms, Retail and Oil sectors, and is currently leading Marks and Spencer’s Energy Team on their journey to achieve a challenging 60% energy reduction target by 2025. Penelope sees her biggest challenge as promoting improved collaboration between colleagues and suppliers.

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