gasag.de Coupons & Deals - 1 Active Offers (8 September 2026)

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New GASAG Customer? Get Up to €400 Value Including a €100 Amazon Voucher on Energy Tariffs

Sign up for a GASAG gas or electricity tariff and earn a welcome bonus of up to €300 for gas or up to €250 for electricity, depending on postal code, annual consumption, and contract term. Every new customer also receives a €100 Amazon voucher with no postal-code or contract-length conditions, making your total reward as high as €400 — use this Gasag.de coupon code to claim the offer.

Sign up for a GASAG gas or electricity tariff and earn a welcome bonus of up to €300 for gas or up to €250 for electricity, depending on postal code, annual consumption, and contract term. Every new customer also receives a €100 Amazon voucher with no postal-code or contract-length conditions, making your total reward as high as €400 — use this Gasag.de coupon code to claim the offer.