diff --git a/lib/tasks/dev.rake b/lib/tasks/dev.rake
new file mode 100644
index 000000000..0820550bd
--- /dev/null
+++ b/lib/tasks/dev.rake
@@ -0,0 +1,129 @@
+namespace :dev do
+  desc 'Generates dummy data in development environment' \
+             ' (options: [random] for random data generation - slowest)'
+
+  task :prime, [:random] => :environment do |t, args|
+    abort 'Production environment is not supported' if Rails.env.production?
+
+    require 'factory_girl'
+    include FactoryGirl::Syntax::Methods
+    FactoryGirl.find_definitions
+
+    PaperTrail.enabled = false
+    with_random_data = args[:random].present?
+
+    def generate_default_data
+      create(:admin_user, username: 'test', password: 'testtest', password_confirmation: 'testtest')
+
+      zone = create(:zone, origin: 'test')
+      registrar = create(:registrar, name: 'test')
+      registrant = create(:registrant, name: 'test', registrar: registrar)
+
+      create(:account, registrar: registrar, balance: 1_000_000)
+      create(:api_user, username: 'test', password: 'testtest', registrar: registrar)
+      create(:domain,
+             name: 'test.test',
+             period: 1,
+             period_unit: 'y',
+             registered_at: Time.zone.now,
+             valid_from: Time.zone.now,
+             expire_time: Time.zone.now + 10.years,
+             registrar: registrar,
+             registrant: registrant)
+
+      Billing::Price.durations.each do |duration|
+        Billing::Price.operation_categories.each do |operation_category|
+          create(:price,
+                 price: Money.from_amount(1),
+                 valid_from: Time.zone.now.beginning_of_day,
+                 valid_to: Time.zone.now + 10.years,
+                 duration: duration,
+                 operation_category: operation_category,
+                 zone: zone)
+        end
+      end
+    end
+
+    def generate_random_data
+      zone_count = 10
+      admin_user_count = 5
+      registrar_count = 50
+      api_user_count = 10
+      registrant_count = 50
+      domain_count = 50
+      registrars = []
+      registrants = []
+      zones = []
+      registrant_names = [
+          'John Doe',
+          'John Roe',
+          'Jane Doe',
+          'Jane Roe',
+          'John Smith',
+      ]
+
+      zone_count.times do
+        origin = SecureRandom.hex[0..(rand(5) + 1)]
+        zones << create(:zone, origin: origin)
+      end
+
+      zone_origins = zones.collect { |zone| zone.origin }
+
+      admin_user_count.times do
+        uid = SecureRandom.hex[0..(rand(5) + 1)]
+        create(:admin_user, username: "test#{uid}", password: 'testtest', password_confirmation: 'testtest')
+      end
+
+      registrar_count.times do
+        uid = SecureRandom.hex[0..(rand(5) + 1)]
+        registrars << create(:registrar, name: "Acme Ltd. #{uid}")
+      end
+
+      registrars.each do |registrar|
+        create(:account, registrar: registrar, balance: rand(99999))
+
+        api_user_count.times do |i|
+          create(:api_user, username: "test#{registrar.id}#{i}", password: 'testtest', registrar: registrar)
+        end
+
+        registrant_count.times do |i|
+          registrants << create(:registrant, name: registrant_names.sample, registrar: registrar)
+        end
+
+        domain_count.times do |i|
+          name = "test#{registrar.id}#{i}#{rand(99999)}.#{zone_origins.sample}"
+          period = rand(3) + 1
+
+          create(:domain,
+                 name: name,
+                 period: period,
+                 period_unit: 'y',
+                 registered_at: Time.zone.now,
+                 valid_from: Time.zone.now,
+                 expire_time: Time.zone.now + period.years,
+                 registrar: registrar,
+                 registrant: registrants.sample)
+        end
+      end
+
+      zones.each do |zone|
+        Billing::Price.durations.each do |duration|
+          Billing::Price.operation_categories.each do |operation_category|
+            create(:price,
+                   price: Money.from_amount(rand(10) + 1),
+                   valid_from: Time.zone.now.beginning_of_day,
+                   valid_to: Time.zone.now + (rand(10) + 1).years,
+                   duration: duration,
+                   operation_category: operation_category,
+                   zone: zone)
+          end
+        end
+      end
+    end
+
+    ActiveRecord::Base.transaction do
+      generate_default_data
+      generate_random_data if with_random_data
+    end
+  end
+end