We plan, develop and operate energy efficiency and renewable energy projects in Japan since 2004 using as-a-service model (ESCo, PPA/HPA(heat), FIT, etc.). We typically form joint venture in each locality with local banks and players to make projects local initiatives.

We undertake new or challenging projects in Japan, creating leading examples, often working with international partners.

B.S. Chemical Engineering at University of Tokyo, M.B.A. at University of Chicago.

Abstract:

We have developed and run wood-chip boiler-based district heating/cooling in Iwate, and wood CHP-based heating/cooling distribution to two hotels in Miyagi. Perhaps common in Europe, but both are first of its kind in Japan; it suggests international collaboration opportunities.

Given relatively temperate climate and cooling needs at commercial buildings, we use wood-source heat to drive absorption chillers to produce cool water in summer. We used some variety of schemes for piping network and absorption chiller location; one uses central chiller and two piping circuits, the other single circuit and remote chillers. Also, it created design issues around how best to use temperature zones to run chillers efficiently yet run pipe networks with reduced heat loss.

We now work on new projects with wood boiler/CHP, with additional design issues of wood drying heat source, under significant seasonality. We intend to work on significant cost reduction in construction work, a key to a pathway toward shared heating and district heating developments.