北海道における最新のトピックス(5)北海道における持続可能エネルギー社会の形成(分散協調型コージエネレーションネットワークとエネルギールネッサンス）

摘要

次世代のエネルギーを考える場合，常にコストが問題視されるが，果たしてこれは正しいのだろうか。現在繰り広げられているコスト低減競争は長期的視点で見ると，失業者の増大につながるように思う。また，コージエネレーションは北国において極めて有効な省エネルギー技術といわれているが，現在のままの仕組みで適切な普及が実現できるのだろうか。本稿では，筆者が近年提唱しているエネルギールネッサンス論と，分散協調型コージエネレーションネットワーク概念における便益等分配の重要性について概説する。%When we discuss about future energy option, cost for the system is always the biggest matter to concern. However is this truly right for designing the energy system for future society? In the modern world, competition for cost reduction is becoming more serious, and this appears to result in increasing unemployment. When we consider basic mechanism of economy and service, we will see the importance of circulating flow of money in the society, and cost reduction competition may reduce this money flow. The author recently proposes "Energy Renaissance". This is a concept of promoting local economy by increasing energy infrastructure of renewable energy with the investment of local people. It is common understanding that co-generation system (combined heat and power) is very effective in cold climate countries as Hokkaido in Japan. However natural market mechanism of the system development will not result in the increase of the system in the society due to the market pressure by electric company. Additionally the effect of the co-generation system is limited due to the unbalanced heat and electricity demand. The author proposes the concept of "Cooperative Distributed-CHP Network". This is similar to the micro-grid concept including co-generation in the system. However, the major difference is the concept of equal benefit among electric and gas companies as well as customers. The paper explains the concepts of the "Energy Renaissance" and the "Cooperative Distributed-CHP Network".