Hotel integrated light and storage green energy solution

Detailed plan description

For high-end hotels, chain hotels, resort hotels and other industries, create an integrated green energy system of "photovoltaic power generation + energy storage peak shaving + intelligent management and control". Deploying distributed photovoltaics in idle spaces such as rooftops and carports, supporting electrochemical energy storage systems, and optimizing dispatch based on hotel occupancy rates and power load characteristics, to achieve the triple value of spontaneous self-use, peak and valley arbitrage, and backup power supply. The system can be seamlessly connected to the hotel's original power distribution system to ensure stable power supply in all scenarios such as guest rooms, elevators, kitchens, fire protection, and conference centers. It also helps the hotel obtain green building and green hotel certifications, and enhance its brand image and market competitiveness.

Adapted to Indonesia

Solve the problems of "high electricity bills, power outages affecting the stay experience, loud diesel engine noise, and the need for quantifiable green brands" for hotels and resorts. The solution integrates rooftop/carport photovoltaics, BESS, diesel engines, ATS, EMS, guest room key loads and energy consumption dashboards, and is suitable for Indonesian island hotels and high-end cultural tourism projects.

Professional specifications and standards based

The system can use PV 400V grid-connected or boosted access, BESS 100kWh-2MWh, PCS 100kW-1MW, ATS to protect key loads; the guest room side maintains 230V, and the public electromechanical is 400V three-phase. Refer to IEC 62109, IEC 62933, IEC 61439, IEC 62040, and IEC 60364. Indonesian Type C/F usage habits should be considered for sockets and small electrical appliances in guest rooms.

Product specification comparison table

Original experience and test data

Scarce experience: Hotel projects most need to clearly balance “power saving” and “reducing customer complaints”.

Pitfalls and pain points that I have stepped on

• There is a significant difference in peak and valley electricity consumption in hotels. Electricity prices are high during daytime business peaks. Electricity costs account for a large proportion of operating costs, and profit margins continue to be compressed;
• Mains power fluctuations or short-term power outages can cause elevators to suddenly stop, guest rooms to lose power, and audio and video equipment to restart, seriously affecting guests' stay experience and triggering complaints and negative reviews on the platform;
• Traditional backup power only relies on diesel generators, which delays start-up by several seconds, is obvious to guests, and causes noise and emissions that affect the hotel’s environment and high-end positioning;
• Photovoltaics and energy storage are purchased and installed separately, and the two systems operate independently, with poor collaborative dispatching capabilities, low spontaneous self-use rate, and long investment return period;
• The energy consumption in various areas of the hotel is scattered, and it is impossible to accurately calculate the electricity consumption of guest rooms, catering, HVAC and other sub-items. The energy-saving transformation lacks data support, and the results of blind transformation are poor;
• Photovoltaic installation destroys the beauty of the hotel building's facade and roof, conflicts with the decoration positioning of high-end hotels, and affects the overall visual effect.

Core parameters

It is suitable for hotels with 100~500 guest rooms, photovoltaic installed capacity of 100kW~2MW, energy storage configuration capacity of 200kWh~10MWh, comprehensive system efficiency ≥90%, photovoltaic self-use rate ≥85%, important load backup power switching time ≤10ms, system power factor ≥0.95, and meets the green hotel evaluation standards.

Our special contribution

• Customized capacity calculation: accurately match optical and storage capacity based on the hotel's historical power consumption curve, occupancy rate fluctuations, and local peak and valley electricity price policies to maximize investment returns and avoid capacity redundancy or shortage;
• Building integrated design: using BIPV photovoltaic building materials and concealed energy storage layout, taking into account the power generation efficiency and the beauty of the hotel's facade, without damaging the overall style and decoration texture of the building;
• Multi-energy synergy between light, storage and diesel: self-developed EMS energy management system realizes millisecond-level intelligent switching between mains power, photovoltaic, energy storage and diesel generators, zero interruption of important loads, and no perception by guests;
• Full-dimensional electricity bill optimization: It has the triple functions of spontaneous self-use, peak and valley arbitrage, and demand management, automatically avoiding peak electricity prices, optimizing basic electricity bills, and maximizing the comprehensive cost reduction effect;
• Full coaching on green certification: Provide full-process technical support from grid connection approval to green hotel and green building certification to help hotels complete low-carbon brand upgrades.

Project income

• Economic benefits: Cooperative operation of light and storage reduces comprehensive electricity bills by 15% to 25%, and a hotel with 300 guest rooms saves more than 400,000 yuan in electricity bills annually; demand management optimizes basic electricity bills, reducing annual costs by more than 10%; after power quality optimization, the service life of air conditioners, elevators, audio-visual equipment and other equipment is extended by 20%, and equipment update costs are significantly reduced.
• Brand benefits: Obtaining green hotel certification, conforming to the trend of low-carbon consumption, enhancing the high-end brand image, attracting environmentally conscious customers, and increasing the room price premium by 5% to 10%.
• Safety benefits: millisecond-level seamless switching of backup power, zero awareness of power outages, completely eliminating guest complaints and safety risks caused by power outages; ensuring the power supply for key loads such as fire protection and elevators throughout the entire process, fully compliant with hotel safety regulations.
• Management benefits: Visible management of sub-item energy consumption, accurate identification of high energy consumption links, and targeted energy-saving transformation; fully automatic intelligent scheduling of the system without manual intervention, reducing operation and maintenance costs by 40%.