APIs & data · Kokusai Kogyo
Embed renewable energy simulation and Japanese electricity tariff data in your own platform. Connect solar PV, battery storage, BEV/V2H and energy-cost comparisons to the customer experience you want to build.
Use Enegaeru as the energy calculation and data component behind your own product: a solar-and-storage configurator, dealer proposal tool, electricity-plan comparison, BEV charging service or commercial project workflow.
Collect location, demand, equipment and comparison assumptions through your own interface.
Connect the supported demand, PV generation, energy-balance and tariff calculations for the selected use case.
Present comparisons and connect the outcome to a quote, application, CRM or project review.
Centralizing supported calculation logic and data maintenance helps teams standardize proposals across products and channels. Agree the API specification, licensed data, update behavior and validation cases before deployment.
Published service coverage spans electricity plans from 100+ suppliers. Compare supported basic and usage charges, time-of-use rates, fuel adjustments and Japan’s renewable energy surcharge.
Electricity tariff data & APIs →ASP combines irradiance data for 835 locations with a battery product master. Manufacturer-supplied characteristics help reflect usable capacity, charging power, conversion losses and standby consumption.
How residential simulations work →Find smart-energy support programs from national, prefectural and municipal authorities. Search by region and equipment to identify candidates for solar, storage, EV and V2H projects.
Japan smart-energy subsidy database →Updated data matters after launch. The Japanese Biz service publishes a monthly electricity-tariff update cycle; the subsidy API publishes monthly updates. Equipment-master and other dataset updates follow their own release processes. Confirm the dataset, effective dates, delivery method and update terms for your selected service.
Published coverage checked October 3, 2026. Counts vary with updates and do not imply that every plan, product or subsidy is available through every API. Sources: ASP capabilities, Biz tariff updates and subsidy API coverage (Japanese).
Build a branded calculator or sales workflow using Enegaeru’s residential energy simulation capabilities. Keep your customer experience and integrate the calculation services you need.
Explore this service →Connect facility-level energy evaluation to your quoting, project-development or portfolio workflow using Enegaeru Biz API capabilities.
Explore this service →Add energy-cost comparisons for EVs, charging and V2H to your own digital service, with Japan-specific calculation capabilities.
Explore this service →Integrate Japanese electricity tariff and smart-energy subsidy information into your own customer journey. Give teams a common starting point for comparison and follow-up.
Explore this service →Support customer-facing comparisons of market-linked electricity plans with calculation logic designed around the applicable plan and supply area.
Explore this service →Discuss weather, irradiance and generation forecasts, and the analysis needed to evaluate battery or EV operation for your use case.
Explore this service →Search national, prefectural and municipal smart-energy programs by location and equipment. Choose web access, data delivery or API integration to suit your workflow.
Explore this service →Choose a representative case and expected outputs. Map the fields, reconcile calculations and test the end-to-end journey before expanding to more tariffs, products or customer segments. Define what happens when data is missing, a plan is unsupported or assumptions change.
Confirm current documentation access, authentication requirements and language. SaaS screens shown elsewhere are workflow examples, not an API front end included by default.
A published customer interview describes a small team moving from spreadsheet-based work to nearly 300 battery simulations per month.
Read the Japan-market example →Enegaeru API was adopted for the company’s home EV charging service, connecting tariff calculations to a customer-facing experience.
Explore the API example →Review named customer stories to understand the actual product, workflow and scope of each engagement.
Review the evidence →Results are individual customer reports at the time of publication. They are not a forecast for another business. Customer adoption does not imply endorsement of a prospective partner.
Tell us what you want to launch in Japan, who will use it, and where the work is getting stuck. We can discuss the right combination of software, APIs, data and specialist support.