In a bowl, whisk together the ginger powder, garlic powder, soy sauce, honey, and orange juice.
Place the salmon fillets in a shallow dish and pour the marinade over them. Cover and refrigerate overnight (at least 8 hours).
Heat a grill or frying pan to medium-high heat. Place the marinated salmon fillets on the grill or pan and cook 4–6 minutes per side until the internal temperature reaches 63 °C (145 °F).
Alternatively, if time is limited: Heat a pan to medium heat, add the salmon fillets and marinade, partially cover, and steam 12–15 minutes until the internal temperature reaches 63 °C (145 °F).