Refine energy table

script/sql/create/15.energy.sql

@@ -1,16 +1,17 @@
 -- [ENERGY]
 
-create table energy_global
+create table energy
 (
-  _no integer primary key
-, price numeric not null
-, pattern varchar(32) references _pattern(id)
-, effic numeric not null
-, demand_charge numeric not null
+  key   text primary key
+, value text not null
 );
 
-insert into energy_global (_no, price, pattern, effic, demand_charge)
-  values (0, 0.0, null, 75, 0.0);
+insert into energy (key, value) values
+  ('GLOBAL PRICE', '0.0')
+, ('GLOBAL PATTERN', '')
+, ('GLOBAL EFFIC', '75')
+, ('DEMAND CHARGE', '0.0')
+;
 
 create table energy_pump_price
 (

script/sql/drop/15.energy.sql

@@ -1,7 +1,9 @@
 -- [ENERGY]
 
 drop table if exists energy_pump_effic;
+
 drop table if exists energy_pump_pattern;
+
 drop table if exists energy_pump_price;
 
-drop table if exists energy_global;
+drop table if exists energy;