Here are some great links with info that you may find helpful:
Foods rich in Vitamin C, Vitamin E, magnesium, calcium, potassium, monounsaturated fats and omega 3 fatty acids help lower blood pressure.
Foods to eat include all leafy greens like kale, spinach, romaine and chard, beets, broccoli, asparagus, cabbage, celery, crimini mushrooms, onions, garlic, almonds, avocado, walnuts
rice bran (rich in magnesium and many B vitamins), strawberries, kiwi, tomatoes, papaya, raspberries, oranges, bell peppers, potatoes
In addition, foods with a diuretic effect (cucumber, lemon, celery, beets, cabbage, parsley, tomato, watermelon, asparagus) have been shown to help.
Increased energy would depend on the cause of the energy deficit whether it be low energy intake, lack of sleep, stress, etc. Search "energy" on the main page and see if any articles fit your particular circumstance.