helen.md: include year to reveal if/when I abandon this

Resolves: #302

Gemfile.lock

@@ -1,14 +1,14 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.5.1)
+    activesupport (6.0.6)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
       zeitwerk (~> 2.2, >= 2.2.2)
-    addressable (2.8.0)
+    addressable (2.8.1)
-      public_suffix (>= 2.0.2, < 5.0)
+      public_suffix (>= 2.0.2, < 6.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -220,7 +220,7 @@ GEM
       forwardable-extended (~> 2.6)
     public_suffix (4.0.7)
     racc (1.6.0)
-    rb-fsevent (0.11.1)
+    rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.5)

n/helen.md

@@ -0,0 +1,32 @@
+---
+layout: null
+permalink: /n/helen.html
+sitemap: true
+month: 09 of 2022
+monthly: "32,35 c/kWh"
+basicdistribution: "5.51 €/month"
+distributionmargin: "4.07 c/kWh"
+basicstock: "3,93 €/month"
+stockmargin: "0,38 c/kWh"
+---
+
+# Thinking on Helen price
+
+*Or more like playing with Jekyll*
+
+Helen's monthly market price for month {{ page.month }} is {{ page.monthly }}.
+
+* Distribution price: {{ page.basicdistribution }} and {{ page.distributionmargin }}.
+* Stock price: {{ page.basicstock }} and {{ page.stockmargin }}.
+
+## Plan for Tuntihinta
+
+* Expensive: <strong>{{ page.monthly }} + {{ page.distributionmargin }}</strong> (The monthly plan + distribution margin)
+* Cheap: <strong>({{ page.monthly }} + {{ page.distributionmargin }}) / 2</strong> (The monthly plan + distribution margin / 2), ***round down***
+* Margin: <strong>{{ page.distributionmargin }} + {{ page.stockmargin }}</strong> (Distribution fee + stock margin)
+
+## Sources
+
+* Definition of monthly plan price: https://www.helen.fi/sahko/sahkosopimus/markkinahinta and https://www.helen.fi/en/electricity/electricity-products-and-prices/marketpriceelectricity
+  * They use it all month following stock market price and trying to get their own citation.
+* Distribution is in *Oma Helen* and changes are announced in their newspaper.