Regarding the compulsory installation of solar power generation equipment in new houses that the Tokyo Metropolitan Government is considering, a council made up of experts in the city said, ``We should seize the opportunity to build new houses and build a new system that encourages guidance to high standards. We have compiled an opinion that we should proceed with the revision of the ordinance to make it compulsory.

In order to reduce greenhouse gas emissions from homes, the Tokyo Metropolitan Government is considering making it mandatory to install photovoltaic power generation equipment in new general housing.



The council, which is made up of Tokyo's experts, has held nine meetings so far, and has repeatedly discussed how to revise ordinances to reduce greenhouse gas emissions.



Then, on the 8th, the 10th and final meeting was held online, and the council said, ``Seize the opportunity to build a new house, standardize energy saving and renewable energy equipment, and guide to a higher level. We should build a new system to encourage it."



In the future, the Tokyo Metropolitan Government will consider support measures while listening to the opinions of housing manufacturers, etc., and will compile a basic policy for ordinance revision around the beginning of next month.

Draft system of Tokyo Metropolitan Government

The Tokyo Metropolitan Government has compiled a draft system to make it mandatory to install solar power generation equipment in newly built houses.



According to this, the target of the obligation will be businesses such as housing manufacturers that supply houses and buildings with a total floor area of ​​20,000 square meters or more annually in Tokyo, and about 50 companies are expected to be subject. That's it.



Eligible business operators are required to determine the number of new houses built in a year, the coefficient indicated for each region as to whether it is suitable for solar power generation based on conditions such as sunlight, and the standard amount of 2 kilowatts per building. It is obliged to calculate the necessary power generation capacity and report to the city how much it has been achieved.



On the other hand, buildings with a roof area of ​​less than 20 square meters are excluded from the calculation of power generation capacity.



In addition, it is also possible to substitute renewable energy equipment that uses geothermal heat other than solar power generation equipment for places with poor sunlight.

Background of the system Future measures

This system is one of the efforts toward a "carbon half" to halve greenhouse gas emissions by 2030, at the Tokyo Metropolitan Assembly in September last year, when Governor Koike said, "We will push the environmental policy of the city to a new stage." revealed as one.



After that, in October last year, the city launched a council of experts, and currently the ordinance that stipulates the obligation to consider the use of solar power generation equipment for large-scale facilities with a floor area of ​​2000 square meters or more. In addition, we have been considering revisions to the ordinance to further promote installation, including in houses.



From May to June this year, when public comments were solicited from Tokyo residents, more than 3,700 opinions were collected, of which 56% were in favor and 41% were against.



Opinions were received from those in favor of this, such as, "There are merits in the face of rising electricity prices," and "Decarbonization and mandating solar power is a global trend."



On the other hand, those who oppose it say, "I don't know the future burden of maintenance, disposal, etc." voice was received.



According to the metropolitan government, businesses such as housing manufacturers are raising concerns that housing prices may rise.



In the future, while listening to the opinions of business operators, the metropolitan government will consider measures such as expanding subsidies for installation costs and establishing a consultation desk regarding maintenance and management costs.