Self-consumption solar power generation system reduces power costs
What is a self-consumed photovoltaic power generation system?
In the self-consumption type photovoltaic power generation system, the electricity generated by the solar panel is used as an electric power company. Without selling electricity,
In factories, warehouses, stores, offices, etc. self-consumption,and a system to reduce the amount of electricity purchased from electric power companies.
say.
Advantages of self-consumed photovoltaic power generation system
Electricity cost reduction (economical)
Declining electricity sales unit price under the feed-in tariff (FIT) system and
Due to an increase in renewable energy surcharges, etc.rising electricity prices
Since it is expected to continue in the future, rather than selling electricity from now on
to consume it yourself.
Various tax incentives
✔ 100% immediate depreciation or 7-10% tax credit *1
✔ Property tax reduced to 3-0/1 for up to 2 years *2
* 1 SME Management Enhancement Law
* 2 Act on Special Measures for Productivity Improvement (depending on each local government)
 | SME Management Enhancement Law (1236KB) |
Various subsidies
✔ Fixed asset tax reduced to 3/2 for 3 years *3
✔Subsidy system of each local government *4
✔J credit can be used *5
(For equipment subsidized by the Ministry of the Environment)
(Cannot be used in combination with the SME management strengthening tax system)
* 4 Assuming that the budget for 2019 will be established, it depends on the local government.
Utilization of lease
✔There is a subsidy system of 4 to 5% of the total lease fee * 6
Types of self-consumed photovoltaic power generation systems
There are two main types of self-consumption solar power generation systems.
We propose the appropriate system for each customer.
Challenges for self-consumed photovoltaic power generation systems
Challenge: Stopping power generation due to reverse power flow and limiting installed capacity
As a major issue of self-consumption type photovoltaic power generation system, "Reverse power flow problem"there is.
Reverse power flow means that the generated power exceeds the power consumed in the factory and flows to the power company.
If the contract with the power company does not allow reverse power flow, the installation of a reverse power relay (RPR) is obligatory.
This device stops the power conditioner when reverse power flow occurs and has "Forced stop of power generation""It has a function to let you.
In other words, if the capacity of the photovoltaic power generation system is large compared to the power consumption of the factory, power generation will stop frequently.
Therefore, in order to prevent reverse power flow, Limit panel installation capacity is necessary.
Solution: Load tracking system
In order to solve the above problems, we
The generated power isDo not exceed power consumption
Monitor each power and control (restrain) the generated power "Load tracking system" is our main provision.
Optimal customers for self-consumption photovoltaic power generation systems
Customers who fit most of the following itemsSuitable for self-consumption solar power generation system.
Please feel free to contact us.
Appropriate check items for self-consumption photovoltaic power generation systems
High daytime electricity usage throughout the year (including holidays)
There is a large roof where solar panels can be installed
Electricity unit price is 13 yen / kWh or more
It is a small and medium-sized enterprise that can receive various tax incentives.
Our self-consumed photovoltaic power generation system
Original simulation system
If you can provide us with the power consumption record for the past year and the roof size and shape of the building,
Even for the self-consumption type, which is difficult to simulate, we can propose an optimal and highly profitable system for our customers with our proprietary software.
Our proprietary software uses NEDO's solar radiation database and customer's demand data every hour
Our proprietary software uses NEDO's solar radiation database and customer's demand data every hour
Calculate self-consumption and surplus (reverse flow rate) of photovoltaic power generation.In addition, it is possible to estimate the reduction in electricity bills for various electricity bill plans.
Proposal case
Proposal example 1: Stores contracted with metered lamps
The metered light contract is a three-stage electricity rate unit price system, and the more electricity you use, the higher the electricity rate.
(Electricity charge unit price of metered lamp B up to 120kWh 17.59 yen / kWh, 120-300kWh 20.82 yen / kWh, 300kWh excess 23.77 yen / kWh)
(Electricity charge unit price of metered lamp B up to 120kWh 17.59 yen / kWh, 120-300kWh 20.82 yen / kWh, 300kWh excess 23.77 yen / kWh)
Also, if the system is less than 10kW, the unit price of electricity sold is as high as 24 yen / kWh. "Surplus power sale type" is recommended.
* System maintenance costs, insurance premiums, property taxes, and other costs are not taken into consideration.
* This is a simulation value by our company, and the result is not guaranteed.
* This is a simulation value by our company, and the result is not guaranteed.
Proposal example 2: Refrigerating / freezing warehouse that uses a large amount of electricity
For cold warehouses and freezer warehouses that use a large amount of electricity throughout the year, "Complete self-consumption type" is recommended.
* System maintenance costs, insurance premiums, property taxes, and other costs are not taken into consideration.
* This is a simulation value by our company, and the result is not guaranteed.
* This is a simulation value by our company, and the result is not guaranteed.